ID: 60627
Title: Long-term vegetation development on a wildfire slope in Innerzwain (Styria, Austria)
Author: Bodo Malowersching, Oliver Sass.
Editor: YANG chuan -ping
Year: 2014
Publisher: The Editorial Board of Journal of Forestry Research.
Source: Centre for Ecological Sciences
Reference: Journal of Forestry Research.vol.25 (1) 103-111 (2014)
Subject: Forestry Research
Keywords: Wildfire, land cover change, temperate forest, aerial photos, soil degradation, vegetation development.
Abstract: Forest fires in mountainous areas can cause severe deforestation which can potentially trigger secondary natural hazards like debris falls and avalanches. We documented an extreme case study for the range of possible post-fire land cover (LC) dynamics. We investigated a 15 -ha, step (10? ? ?65 ?) burnt slope in Styria (Austria) at elevation of 760?1130 m, which burned in 1946 and has not fully recovered to date. Seven 8-class legend LC maps were produced (1954, 1966, 1973, 1982, 1998, 2004, 2009) and integrated in a vector-based GIS, mainly by on-screen interpretation of aerial photos. Our aim was to clarify how post-wildfire LC dynamics take place on a severely damaged, steep slope and to give a basic projection of the future vegetation recovery process. The pre-fire pinus sylvestris stands have been mainly replaced by Picea abies and Larix deciduas.Regeneration proceeded mainly from the base of the slope upwards .All tree species together still cover no more than 40% of the slope but steady increase in woodland cover. Degraded rock/debris areas, however, expanded as well because soil erosion and related debris flows remained active. Slope angle (with a threshold value of approx.35-40?) seemed to control whether erosion or regeneration prevailed. According to a simple extrapolation, the slope will not reach its former condition before 2070.This extreme disturbance window of more than 120 years is owed to the steepness of the slope and to the shallow soils on dolomitic bedrock that were severely damaged by the fire. The neglect of any game fencing is a further slowing regeneration.
Location: T E 15 New Biology Building.
Literature cited 1: Ahlgren CE.1974.Effects of fires on temperate forests: North central united states .In: T.T. Kozlowski and C.E. Ahlgren (Eds), Fire and ecosystems. New York: Academia press, pp 195-223.
Amraouti M, Liberato Margarida LR, Calado TJ, Da Camara CC, Coelho LP, Trigo RM , Gouveia CM.2013. Fire activity over Mediterranean Europe based on information from Meteostat -8, Forest Ecology and Management, 294: 62-72.
Literature cited 2: Austrian Forestry Inventory. 2012 http://bfw.ac.at.
Balling RC, Meyer GA, Wells SG. 1992. Climate change in yellow stone National Park: Is the drought -related risk of wildfires increasing? Climate change, 22: 35-45.
ID: 60626
Title: Evaluation of the adaptability and response of indigenous trees to assisted rehabilitation on the degraded hillsides of Kuriftu Lake catchment (Debre Zeit, Ethiopia)
Author: Wondwossen Gebretsadik
Editor: YANG chuan -ping
Year: 2014
Publisher: The Editorial Board of Journal of Forestry Research.
Source: Centre for Ecological Sciences
Reference: Journal of Forestry Research.vol.25 (1) 97-102 (2014)
Subject: Forestry Research
Keywords: Infiltration pits, Kuriftu Lake Catchment, Water Harvesting.
Abstract: Removal of trees and shrubs from hillsides exposes a site to erosion that threatens soil aggregation and stability. The Present study aimed at evaluating the performance of five indigenous tree species in rehabilitation of degraded hillsides of Kuriftu Lake catchment and the role of water harvesting structures.Adaptibility varied by tree species and water harvesting structures significantly augmented seedling establishment for some tree species. Height of Acacia abyssinica planted on steeper slopes (18%-27%) without infiltration pits was lower than for conspecifics planted with infiltration pits. Dodonaea angustifolia was proved to be best adapted to the site and showed no need for water harvesting regardless of planting position across the degraded hillside. Planting of Acacia seyal should be restricted to gentler slopes (0-17%) with infiltration pits: tree height declined significantly on steep slopes without infiltration pits. Olea Africana performed better on gentle slopes with pits but also grew well on steeper slopes with pits.Euclea schimperi was proved to be least effective of the species evaluated in this study.
Location: T E 15 New Biology Building.
Literature cited 1: Anschutz J, Kome A, Nederlof M, Neer R, and Ton V.2003.Water harvesting and soil moisture retention. Agrodok, 13: 10-13.
Blanko H. Rattan L. 2008.Principles of soil conservation and Management (1st edition). Springer, pp 399-400.
Literature cited 2: Birhanu Z, Matthew M, Bharat S, Abeyou W.2011. Integrated rainwater management strategies in the Blue Nile Basin of the Ethiopian highlands.
International Journal of Water Resources and Environment Engineering. 3: 220-222.
ID: 60625
Title: Influence of climatic conditions, topography and soil attributes on the spatial distribution of site productivity index of the species rich forests of Jalisco, Mexico.
Author: Adel Mohamed, Robin M. Reich, Raj Khosla C. Aguirre-Bravo, Martin Mendoza Briseno.
Editor: YANG chuan -ping
Year: 2014
Publisher: The Editorial Board of Journal of Forestry Research.
Source: Centre for Ecological Sciences
Reference: Journal of Forestry Research.vol.25 (1) 87-95 (2014)
Subject: Forestry Research
Keywords: Best management practices, climate change, spatial predictions, tropical dry forests, weighted least sqares.
Abstract: This paper presents an approach based on field data to model the spatial distribution.of the site productivity index (SPI) of the diverse forest types in Jalisco, Mexico and the response in SPI to site and climatic conditions. A linear regression model was constructed to test the hypothesis that site and climate variables can be used to predict the SPI of the major forest types in Jalisco.SPI varied significantly with topography (elevation, aspect, and slope),soil attributes (pH, sand, silt), climate (temperature, and precipitation Zones) and forest type .The most important variable in the model was forest type, which accounted for 35%of the variability in SPI . Temperature and precipitation accounted for 8to 9% of the variability in SPI. No significant differences were detected between the observed and predicted SPI for the individual forest types. The linear regression model was used to develop maps of the spatial variability in predicted SPI for the individual forest types in the state. The spatial site productivity models developed in this study provides a basis for understanding the complex relationship that exists between forest productivity and site and climatic conditions in the state. Findings of this study will assist resource managers in making cost-effective decisions about the management of individual forest types in the state of Jalisco, Mexico.
Location: T E 15 New Biology Building.
Literature cited 1: AcharyaT, Ray AK.2005.Image processing: principles and applications. New York: Wiley, p.452.
Agramont ARE, Mass SF, Bernal GN, Hernandez JIV, Frederickson TS.2012. Effect of human disturbance on the structure and regeneration of forests in the Nevada de Toluca National Park, Mexico. Journal of Forestry Research.23: 39-44.
Literature cited 2: Akaike H. 1969.Fitting autoregressive models for regression. Annals of the Institute of Statistical Mathematics, 21: 243-247.
Avery, T.E. And Burkhart, H.E 2002. Forest Measurements (5th Ed). Madison: McGraw Hill, 456 pp.
ID: 60624
Title: Temporal patterns of storage and flux of N and P in young Teak plantations of tropical moist deciduous forest, India.
Author: Kaushlendra Kumar Jha
Editor: YANG chuan -ping
Year: 2014
Publisher: The Editorial Board of Journal of Forestry Research.
Source: Centre for Ecological Sciences
Reference: Journal of Forestry Research.vol.25 (1) 75-86 (2014)
Subject: Forestry Research
Keywords: nutrient uptake, standing state, return turnover time, nutrient use efficiency, compartment model, harvest loss, Tectona grandis
Abstract: Teak (Tectona grandis Linn.f) ranks among the top five tropical hardwood species and is being promoted for use in plantations in its non-native range due to its high economic value. However, there is a general lack of data on ecosystem functioning of teak plantations. We aimed at understanding storage and flux of nutrients related to young plantations of teak. Cycling of nitrogen (N) and phosphorus (P) in a chronosequence of plantations (1, 5,11,18,24 and 30 years) was studied in the Moist Deciduous Forest Region of North India with the objective of investigating the nutrient cycling pattern at younger age since the current trend of harvesting age of the species in several tropical countries is being drastically reduced for quick return from this high value crop. Standing state, nutrient uptake, nutrient return and nutrient retranslocation in these plantations were estimated by tree harvesting and chemical analysis methods. The range of total standing nutrient across all these plantations was 20.3 to 586.6 Kg.ha?? for N and 5.3 to 208.8 Kg.ha?? for p. Net uptake of N ranged from 19.4 to 88.9 kg.ha??.a?? and p from 3.8 to 18.1kg.ha??.a??.Retranslocation of N and P among all the stands ranged from 8.7 to 48.0 Kg.ha??.a?? and 0.01 to 3.5Kg.ha??.a??, respectively .Range of total nutrient return was 25.8 to 91.3 Kg.ha??.a?? for N and 2.7 to 10.1 Kg.ha??.a??for p. N and P use efficiency was between 107.4 and 192.5 g dry organic matter (OM) g?? N, and 551.9 and 841.1g OM g?? P, respectively . The turnover time ranged from 2.04-13.17 years for N and between 2.40-22.66 years for p. Quantity of N and p in the soil nutrient pool ranged from 2566.8 to 4426.8 Kg.ha?? and 372 to 520 Kg.ha??, respectively. Storage and flux of components in different plant parts of different aged plantations were assessed and depicted in compartment models. Percentage storage in soil, litter and vegetation ranged from 82% to 99%, 0.6% to 2.4% and 0.5% to 15% for N, respectively, and from 63% to 98%, 0.5% to 2% and 1% to 35% for P, respectively. This information could be useful in managing external nutrient manipulation to crops of different ages for optimum biomass production or carbon sequestration.
Location: T E 15 New Biology Building.
Literature cited 1: Adu-anning c, Blay DJ.2001.Ensuring sustainable harvesting of wood: impact of biomass harvesting on the nutrient stores of teak woodlot stand in the Sudan savanna. Ghana Journal of Forestry, 10: 17-24.
Awotoye oo, Ogunkunle CO, Adeniyi SA. 2011. Assessment of soil quality under various land use practices in a humid agro -ecological zone of Nigria. African Journal of Plant science, 5(10): 565-569.
Literature cited 2: Balooni K. 2000. Teak investment programmes: an Indian perspective. Unasylva, 51:22-28.
Bargali SS.1990.Structure and functioning of Eucalyptus plantations in Tarai belt of Kumaun Himalaya. Ph. D. Thesis.Nainital, India: Kumaun University.
ID: 60623
Title: Soil quality index as a tool for scots pine (pinus sylvestris) monoculture conversion planning on afforested, reclaimed mine land.
Author: Marcin Pietrzykowski
Editor: YANG chuan -ping
Year: 2014
Publisher: The Editorial Board of Journal of Forestry Research.
Source: Centre for Ecological Sciences
Reference: Journal of Forestry Research.vol.25 (1) 63-74 (2014)
Subject: Forestry Research
Keywords: mining sites, afforestation, pine monoculture conversion, soil quality index, forest habitat classification.
Abstract: In central Europe, a large portion of post-mining sites were afforested with Scots pine, which is characterized by good adaptability and a tolerance for poor habitat at the beginning of forest ecosystem development. Conversion of monoculture on mine sites into more biodiverse mixed hardwood forests, especially on more fertile deposits, can be an emerging need in this part of Europe in next decades. The ability to classify the forests at these post -mining sites will facilitate proper species selection as well as the management and formation of the developed ecosystem ' s stability .This work describes the guidelines that can be followed to assess reclaimed mine soil (RMS) quality, using the mine soil quality index (MSQ I) and a classification of developed forest sites as a basis of tree -stand species selection and conversion of pine monocultures. The Research was conducted on four post-mining facilities (lignite, hard coal, sulphur, and sand pit mining areas) on different RMS substrates dominant in central Europe. Soil quality assessment takes into account the following features of the soil: texture soil soil nutrients (ca, Mg, K, Na, P); acidity (pH KCI); and Corg-to-Nt ratio in the initial organic horizon. An analysis was conducted of classification system using the MSQI validation correlation (at p=0.05) with vegetation features affected by succession: aboveground biomass of forest floor and ecological indicators of vascular plants (calculated on the basis of Ellenberg ' s (2009) system). Eventually, in the analysed data set, the MSQI ranged from 0.270 for soils on quaternary sands to 0.720 for a mix of quaternary loamy sands with neogene clays. Potential forest habitat types and the role of the pine in the next generation of tree stands on different RMS parent rock substrate were proposed.
Location: T E 15 New Biology Building.
Literature cited 1: Anderson DW.1977.Early stages of soil formation of glacial ill mine spols in semiarid climate. Geoderma, 19: 11-19.
Andrews JA, Jhonson JE, Torbert JL, Burger JA, Kelting DL.1998.Minesoil and site properties associated with early height growth of eastern white pine. Environ Qual,27:192-199.
Literature cited 2: Baule H, Fricker C. 1970.The Fertilizer treatment of forest trees.Munchen, Germany: BLV-Verlagssges, p.259.
Baumann K, Rumpelt A, Schneider BU, Marschner P, Huttl R.F.2006. Seedling biomass and element content of Pinus sylvestris and pinus nigra grown in sandy substrates with lignite. Geoderma, 136: 573-578.
ID: 60622
Title: Response of pinus koraiensis seedling growth to different light conditions based on the assessment of photosynthesis in current and one-year-old needles.
Author: Jiaojun Zhu, Kai Wang, Yirong Sun, Qiaoling Yan.
Editor: YANG chuan -ping
Year: 2014
Publisher: The Editorial Board of Journal of Forestry Research.
Source: Centre for Ecological Sciences
Reference: Journal of Forestry Research.vol.25 (1) 53-62 (2014)
Subject: Forestry Research
Keywords: light requirement, needle age, needle trait, photosynthetic plasticity, pinus koraiensis,
Abstract: As one of the three major five-leaved pines in the northern hemisphere, pinus koraiensis is the most important dominant tree species in the natural mixed-broadleaved Korean pine forests. However, the regeneration of P. Koraiensis under the canopy of secondary forest stands is poor because of the light limitation. This study was conducted to understand how p. Koraiensis seedlings adapt to different light intensities and what would be the optimum light level for their establishment and growth .Three repetition plots with four light intensities (15%, 30%, 60% and 100% of the natural incident irradiances, achieved by suspending layers of black nylon net above and surrounding the plots) were set up under natural climate conditions in a montane region in eastern Liaoning province, Northeast china. A total of 80 P. Koraiensis seedlings with similar height and root collar diameter were transplanted into four plots. After one year of acclimation to the specific light conditions, the seasonal variations of the photosynthetic variables and needle traits of the current and one-year- old needles and the growth parameters were observed under four light intensities. The results indicated that : (1) The seedling at 60% treatment exhibited the greatest growth, which agreed with the response of the light-saturated photosynthetic rates(Amax) and the dark respiration rate (Rd) in the current and one-year-old needles,i.e ,Rd at 60% treatment was significantly lower than that at 100% treatment, but Amax did not differ between the seedlings at 100% and 60% treatments. (2) The P. Koraiensis seedlings have a certain photosynthetic plasticity to adapt the light conditions by adjusting their needle traits and regulating the physiological processes, because Amax,Rd light saturation point and compensation point, the needle mass area, needle nitrogen and chlorophyll contents were significantly (p<0.05)correlated with the light intensities. Especially, Amax at 100% and 60% treatments was significantly higher (p<0.05) than that at 30% and 15% treatments for both current and one -year old needles. (3) The needles of different ages played a commutative role during the growing season, i.e., the one-year-old needles played a major role for the photosynthesis in the early growing season.This ensured the effective photosynthesis throughout the growing season. These finding suggest that P. Koraiensis is the in-between heliophilous and shade-tolerant tree species at least for the seedling up to 8 years.
Location: T E 15 New Biology Building.
Literature cited 1: Barnes BV, Xu ZB, Zhao SD. 1992. Forest ecosystems in an old-growth pine-mixed hardwood forest of changbai Shan preserve in northeastern china. Canadian Journal of Forest Research, 22: 144-160.
Bloor JMG, Grubb PJ.2003.Growth and morality in high and low light: trends among 15 shade-tolerant tropical rain forest tree species .Journal of Ecology. 91: 77- 85.
Literature cited 2: Boardman NK. 1977. Comparative photosynthesis of sun and shade plants. Annual Review Plant Physiology, 28: 355-377.
Bond BJ, Farnsworth BT, Coulombe RA, Winner WE.1999.Foliage physiology and biochemistry in response to light gradients in conifers with varying shade tolerance. Oecologia, 120: 183-192.
ID: 60621
Title: Estimating pinus palustris tree diameter and stem volume from tree height, crown area and stand-level parameters
Author: C.A. Gonzalez-Benecke, Salvador A. Gezan, Lisa J. Samuelson Wendell P. Cropper Jr., Daniel J. Leduc. Timothy A. Martin.
Editor: YANG chuan -ping
Year: 2014
Publisher: The Editorial Board of Journal of Forestry Research.
Source: Centre for Ecological Sciences
Reference: Journal of Forestry Research.vol.25 (1) 43-52 (2014)
Subject: Forestry Research
Keywords: Longleaf pine, diameter -height relationships, crown area, individual -tree stem volume, growth and yield modeling.
Abstract: Accurate and efficient estimation of forest growth and live biomass is a critical element in assessing potential responses to forest management and environmental change. The objective of this study was to develop models to predict longleaf pine tree diameter at breast height (dbh) and merchantable stem volume (V) using data obtained from field measurements. We used longleaf pine tree data from 3,376 planted trees on 127 permanent plots located in the U.S. Gulf Coastal plain region to fit equations to predict dbh as functions of tree height (H) and crown area (CA). Prediction of dbh as a function of H improved when CA was added as an additional independent variable. Similarly, predictions of V based on H improved when CA was included. Incorporation of additional stand variables such as age, site index, dominant height, and stand density were also evaluated but resulted in only small improvements in model performance. For model testing we used data from planted and naturally-regenerated trees located inside and outside the geographic area used for model fitting. Our results suggest that the models area robust alternative for dbh and v estimations when H and CA are known on planted stands with potential for naturally-regenerated stands, across a wide range of ages. We discuss the importance of these models for use with metrics derived from remote sensing data.
Location: T E 15 New Biology Building.
Literature cited 1: Andersen H-E, Reutebuch SE, and Mc Gaughey RJ 2006. Arigorous assessment of tree height measurements obtained using airborne lidar and conventional field methods. Canadian Journal of Remote Sensing, 32: 355-366.
Baldwin VC, Saucier JR.1983.Aboveground weight and volume of unthinned, planted longleaf pine on west Gulf Forest Orleans, L.A.Research paper SO-191, p.25.
Literature cited 2: Bi H, Fox JC, Li Y, pang Y. 2012.Evaluation of nonlinear equations for predicting diameter from tree height. Canadian journal of Forest research, 42:1-18
Chen X, Hutley LB, Eamus D.2003.carbon balance of a tropical savanna of northern Australia. Oecologia, 137: 405-416.
ID: 60620
Title: Hydrological impacts of afforestation-A review of research in India.
Author: B. Venkatesh, N. Lakshman, B.K. Purandara.
Editor: YANG chuan -ping
Year: 2014
Publisher: The Editorial Board of Journal of Forestry Research.
Source: Centre for Ecological Sciences
Reference: Journal of Forestry Research.vol.25 (1) 37-42 (2014)
Subject: Forestry Research
Keywords: afforestation, Western Ghats, Experimental watersheds, land-use/cover changes, humid tropics.
Abstract: We review the current status of experimental studies in India to understand the linkages between afforestation and hydrology. This discipline deals with the use and management of water, social awareness of environmental problems, and ecosystem limitations on provision of watershed services by river basins in the mountain regions of India. Our review begins with examination of experimental works in tropical countries and proceeds to discussion of initiatives of Indian research institutes and government organizations towards establishing experimental watersheds to understand the impacts of land cover changes on hydrologic regimes in the Indian -sub-continent. This is followed by the review of the experimental work carried out by various authors to assess the impact of land cover changes on major water balance components such as , runoff, ground water, evapotranspiration and sediment yield. The spatial scales of these experiments have been limited to small watersheds or field plots. This paper also describes impacts of human interventions (such as plantations of exotic forest species to restore degraded landscapes) on the water balance components in diverse hydro-geo-environmental conditions in the Indian sub-continent. We focus on identifying the research areas which require immediate attention to develop tools to assist planners and policy makers in assessing and managing the water resources in these complex environments. The review is largely based on research results reported during the last 20-30 years.
Location: T E 15 New Biology Building.
Literature cited 1: Anonymous 2003.Annual Report 2002-2003.CSWCRTI, Dehradun, pp. 50-51.
Anonymous, 2005.Annual Report 2004-05, CSWCRTI, Dehradun.
Literature cited 2: Beven KJ, Krikby MJ. 1979. A physically based variable contribution area model of basin hydrology. Hydrological sciences Bulletin, 24: 43-69.
Bonell M. 1991.Progress and future research needs in water catchment conversion within the wet tropical coast of north-east Queensland. In: N.
ID: 60619
Title: Governance of forest conservation and co-benefits for Bangladesh under changing climate.
Author: Ronju Ahammad, Mohammed Hossain, Panna Husnain.
Editor: YANG chuan -ping
Year: 2014
Publisher: The Editorial Board of Journal of Forestry Research.
Source: Centre for Ecological Sciences
Reference: Journal of Forestry Research.vol.25 (1) 29-36 (2014)
Subject: Forestry Research
Keywords: REDD+ (Reducing Emissions from Deforestation and Forest Degradation in Developing countries). Conservation, institution, livelihood, protected areas.
Abstract: We focused on key aspects of forest governance for biodiversity conservation in implementing new climate change policies. The national forest institutions must be adaptive to identify the existing pitfalls of prior conservation policies to take advantage of new climate change policies. Strengthening roles and technical capacity of national institutions for systematic biodiversity monitoring and carbon stock assessment is required in developing and least developed countries. Community participation needs careful analysis to ensure equitable access of particular social groups to local decision-making processes and to sustain optional livelihoods. The livelihood options around forest reserves or protected areas must e taken into account to enhance forest-based adaption.
Location: T E 15 New Biology Building.
Literature cited 1: Agrawal A, Chhatre A, Hardin R. 2008.Changing Governance of the world ' s forests. Science, 320(5882): 1460-1462.
Ahmad BC, Hashim MHI, Abdullah J, Jaafar J.2012. Stakeholders ' perception on buffer zone potential implementation: a preliminary study of a TasekBera, M ' sia. Procedia-social and Behavioral sciences, 50: 582-590.
Literature cited 2: Arts B, Buizer M.2009. Forests, discources, institutions: A discursive-institutional analysis of global forest governance. Forest policy and Economics, 11; 340-347.
Berkes F, Kofinas PG, Chapin SF.2009.Conservation, community, and live lihoods: sustaining, renewing, and adapting cultural connections to the land.
ID: 60618
Title: Biodiversity and ecological assessments of Indian sacred groves.
Author: Rajasri Ray, M.D.S. Chandran, T. V. Ramachandra
Editor: YANG chuan -ping
Year: 2014
Publisher: The Editorial Board of Journal of Forestry Research.
Source: Centre for Ecological Sciences
Reference: Journal of Forestry Research.vol.25 (1) 21-28 (2014)
Subject: Forestry Research
Keywords: biodiversity, conservation, ecosystem service, endemics, sacred grove.
Abstract: Sacred groves are patches of forests preserved for their spiritual and religious significance. The practice gained relevance with the spread of agriculture that caused large-scale deforestation affecting biodiversity and watersheds. Sacred groves may lose their prominence nowadays, but are still relevant in Indian rural landscapes inhabited by traditional communities. The recent rise of interest in this tradition encouraged scientific study that despite its pan-Indian distribution focused on India ' s northeast, Western Ghats and east coast either for their global/regional importance or unique ecosystems. Most studies focused on flora, mainly angiosperms, and the faunal studies concentrated on vertebrate while lower life forms were grossly neglected. Studies on ecosystem functioning are few although observations are available .Most studies attributed watershed protection values to sacred groves but hardly highlighted hydrological process or water yield in comparison with other land use types. The grove studies require diversification from stereotyped path and must move towards creating credible scientific foundations for conservation. Documentation should continue in unexplored areas but more work is needed on basic ecological functions and ecosystem dynamics to strengthen planning for scientifically sound sacred grove management.
Location: T E 15 New Biology Building.
Literature cited 1: Ahmed M F, 2004.Bird diversity of sacred groves of cherrapunjee, Meghalaya, India. Technical Report, Aaranyak, pp. 1-19.
Ambinakudige S, Satish B.N.2009.Comparing tree diversity and composition in coffee farms and sacred forests in the Western Ghats of India. Biodiversity and conservation, 18: 987-1000.
Literature cited 2: Anthwal A, Sharma RC, Sharma A. 2006. Sacred groves: traditional way of conserving plant diversity in Garhwal Himalaya, Uttranchal.The Journal of American Science, 2(2): 35-38.
Arunachalam A, Arunachalam K, Pandey HN, Tripathi RS. 1998. Fine litter-fall and nutrient dynamics during forest regrowth in the humid subtropics of north-eastern India. Forest Ecology and Management, 110: 209-219.
ID: 60617
Title: Afforestation, restoration and regeneration -Not all tees are created equal.
Author: Shanekha S. Lawson. Charles H. Michler
Editor: YANG chuan -ping
Year: 2014
Publisher: The Editorial Board of Journal of Forestry Research.
Source: Centre for Ecological Sciences
Reference: Journal of Forestry Research.vol.25 (1) 3-20(2014)
Subject: Forestry Research
Keywords: Age detection, oil palm, WorldView-2, Object-based image analysis.
Abstract: Undulations in weather patterns have caused climate shifts of increased frequency and duration around the world. The need for additional research and model data on this pressing problem has resulted in a plethora of research groups examining a particular tree species or biome for negative effects of climate change. This review aims to (1) collect and merge recent research data on regeneration within old-and new-growth forests, (2) highlight and expand upon selected topics for additional discussion, and (3) report how shade tolerance ,drought tolerance, and inherent plasticity affect tree growth and development. Although shade and drought tolerance have been well studied by a number of research groups, this review reveals that in- depth analysis of a single or a few species in a given area will not generate the data required to implement a successful regeneration plan. Studies using historical accounts of previous species composition, information regarding site seasonality, species competition, and individual responses to drought and shade are needed to (1) develop best management plans and (2) ensure future modeling experiments are focused on a greater variety of species using more innovative methods to evaluate climate change effects.
Location: T E 15 New Biology Building.
Literature cited 1: Alvarez-Alvarez P, Barrio-Anta M, Camara-Obregon A, dos Santos-Bento JMR. 2013. Ground vegetation as an indicator of site quality: effect of non-site factors on the productivity of newly established chestnut plantations in northwestern Spain. J For Res, 18(5): 407-417.
Antos JA, Parish R. Nigh GD.2010. Effects of neighbours on crown length of Abies lasiocarpa and picea engelmannii in two old-growths stands in British Columbia.can JFor Res, 18(5): 407-417.
Literature cited 2: Andrews DM, Barton CD, Czapka SJ, Kolka RK, Sweeney Bw.2010. Influence of trees shelters on seedling success in an affrosted riparian zone. New Forest, 39(2): 157-167.
Akhavan R, Sagheb-Talebi K, Zenner EK, Safavimnesh F. 2012. Spatial patterns in different forest development stages of an intact old-growth oriental beech forest in the Caspian region of Iran. Eur J Forest Res, 131(5): 1355-1366.
ID: 60616
Title: Determination of the age of oil palm from crown projection area detected from WorldView-2 multispectral remote sensing data: The case of Ejisu-Juaben district, Ghana.
Author: Abel Chemura, Iris van Duren, Louise M.van Leeuwen.
Editor: Derek Lichti
Year: 2015
Publisher: Elsevier B.V.
Source: Centre for Ecological Sciences
Reference: PHOTOGRAMMETRY AND REMOTE SENSING Vol 100 118-127 (2015)
Subject: Photogrammetry and Remote Sensing
Keywords: Age detection, oil palm, WorldView-2, Object-based image analysis.
Abstract: Information about age of oil palm is important in sustainability assessments, carbon mapping, yield projections and precision agriculture. The aim of this study was to develop and test an approach to determine the age of oil palm plantations (years after planting) by combining high resolution multispectral remote sensing data and regression techniques using a case study of Ejisu-Juaben district of Ghana. Firstly, we determined the relationship between age and crown projection area of oil palms fr45om sample fields. Secondly, we did hierarchical classification using object based image analysis techniques on WorldView-2 multispectral data to determine the crown projection areas of oil palms from remote sensing data. Finally, the crown projection areas obtained from the hierarchical classification were combined with the field-developed regression model to determine the age of oil palms at field level for a wider area. Field collected data showed a strong linear relationship between age and crown area of oil palm up to 13 years beyond which no relationship was observed. A user ' s accuracy of 80.6 % and a producer ' s accuracy of 68.4 % were obtained for the delineation of oil palm crowns while for delineation of non-crown objects a user ' s accuracy of 65.6 % and a producer ' s accuracy of 78.6 % were obtained, with an overall accuracy of 72.8 % for the OBIA delineation. Automatic crown projection area delineation from remote sensing data produced crown projection areas which closely matched the field measured crown areas except for older oil palms (13 + years) where the error was greatest. Combining the remote sensing detected crown projection area and the regression model accurately estimated oil palm ages for 27.9 % of the fields and had an estimation error of 1 year or less for 74.6% of the fields an error of a maximum 2 years for 92.4 % of the fields. The results showed that 6 and 11 year old oil palm stands were dominating age categories in the study area. Although the method could be reliably applied for estimating oil palm age at field level, more attention is required in improving crown area delineation to improve the accuracy of the approach.
Location: T E 15 New Biology Building.
Literature cited 1: Abdi, H., Molin, P., 2007. Lilliefors/Van Soest ' s test of normality. Encyclopedia Meas. Stat, 540-544.
Addink, E.A., de Jong, S.M., Pebesma, E.J., 2007. The importance of scale in object-based maping of vegetation parameters with hyperspectral imagery. Photogramm. Eng.Remote Sens. 73 (8), 90-912.
Literature cited 2: Alfatni, M.S.M., Shariff, A.R.M., Abdullah, M.Z., Marhaban, M.H., Shafie, S.B., Saaed, OM.B., 2013. Recognition system of oil palm fruit bunch types based on texture feature and image processing techniques.Adv.Sci.Lett. 19 (12), 3441-3444.
Anornu, G.K., Kortatsi, B.K., Saeed, Z.M., 2009. Evaluation of groundwater resources potential in the Ejisu-Juaben district of Ghana.Afr.J.Environ.Sci.Technol 3 (10), 332-340.
ID: 60615
Title: Integrating SAR and derived products into operational volcano monitoring and decision support systems.
Author: F.J. Meyer, D.B. McAlpin, W.Gong, O. Ajadi, S. Arko, P.W. Webley, J. Dehn.
Editor: Derek Lichti
Year: 2015
Publisher: Elsevier B.V.
Source: Centre for Ecological Sciences
Reference: PHOTOGRAMMETRY AND REMOTE SENSING Vol 100 106-117 (2015)
Subject: Photogrammetry and Remote Sensing
Keywords: Hazards, Volcanoes, Change detection, monitoring, SAR, Decision support, Performance, Multisensor.
Abstract: Remote sensing plays a critical role in operational volcano monitoring due to the often remote locations of volcanic systems and the large spatial extent of potential eruption pre-cursor signals. Despite the all-weather capabilities of radar remote sensing and its high performance in monitoring of change, the contribution or radar data to operational monitoring activities has been limited in the past. This is largely due to: (1) the high costs associated with radar data; (2) traditionally slow data processing and delivery procedures; and (3) the limited temporal sampling provided by spaceborne radars. With this paper, we allow for a meaningful integration of radar data into operational volcano monitoring decision support systems. Specifically, we present fast data access procedures as well as sampling of volacanic systems with SAR data. We introduce phase-based (coherent) and amplitude-based (incoherent) change detection procedures that are able to extract dense time series of hazard information from these data. For a demonstration, we present an integration of our processing system with an operational volcano monitoring system that was developed for use by the Alaska Volcano Observatory (AVO). Through an application to a historic eruption, we show that the integration of SAR into systems such as AVO can significantly improve the ability of operational systems to detect eruptive precursors. Therefore, the developed technology is expected to improve operational hazard detection, alerting, and management capabilities.
Location: T E 15 New Biology Building.
Literature cited 1: Amelung, F., Jonsson, S., Zebker, H., Segall, P., 2000a. Widespread uplift and ' trapdoor ' faulting on Galpagos volcanoes observed withradar interferometry. Nature 407 (6807), 993-996.
Amelung, F., Oppenheimer, C., Segall, P., Zebker, H., 2000b. Ground deformation near Gada ?Ale Volcano, Afar, observed by radar interferometry.Geophys.Res.Lett.27 (19), 3093-3096.
Literature cited 2: Arnoult, K., Olson, J., Szuberla, C., McNutt, S., Garces, M., Fee, D., Hedlin, M., 2010. Infrasound observations of the 2008 explosive eruptions of Okmok and Kasatochi volcanoes.J.Geophys.Res.115, DOOL15.
Attema, E., Bargellini, P., Edwards, P., Levrini, G., Lokas, S., Moeller, L., Rosich-Tell, B., Secchi, P., Torres, R., Davidson, M., 2007 .Sentinel-1-the radar mission for GMES operational land and sea services. ESABull.131, 10-17.
ID: 60614
Title: Persistent scatterers at building facades-Evaluation of appearance and localization accuracy.
Author: Stefan Gernhardt, Stefan Auer, Konrad Eder.
Editor: Derek Lichti
Year: 2015
Publisher: Elsevier B.V.
Source: Centre for Ecological Sciences
Reference: PHOTOGRAMMETRY AND REMOTE SENSING Vol 100 92-105 (2015)
Subject: Photogrammetry and Remote Sensing
Keywords: Urban, SAR, Simulation, Understanding, Pont cloud, Accuracy.
Abstract: Thanks to the high resolution of modern SAR satellites many persistent scatterers (PS) appear at single buildings. Approximately half of them represent building facades. These groups of points often show regular patterns in SAR images that can be related to repeating structure elements on the facades. Hence, individual buildings can now be monitored over time, either based on amplitude (for change detection) or phase information (using interferometric methods). However, patterns of point signatures are often disrupted or disappear when the imaging geometry is slightly changed. In addition, the localization accuracy of estimated and geocoded natural PS is not known, yet. The investigation at hand provides a detailed analysis of PS patterns based on reference data obtained from a photogrammetric survey and terrestrial measurements. The processing of the optical images allows creating a detailed 3D model of the respective fa?ade, which represents the geometrical object information for SAR simulation. The terrestrial measurements allow relating the 3D model to its true position in a world coordinate system like UTM (Universal Transverse Mercator), which is necessary for assessing the localization accuracy of the signatures. From the simulation results the appearance of the point patterns of natural PS in high resolution SAR data can be better understood. Moreover, the localization accuracy and precision for these points can be derived for the first time. The approach and findings for two case studies in Munich are described in detail in this paper.
Location: T E 15 New Biology Building.
Literature cited 1: Adam, N., Eineder, M., Yague-Martinez, N., Bamler, R., 2008. High resolution interferometric stacking with TerraSAR-X. In: Proceedings of IEEE International Geoscinece and Remote Sensing Symposium, pp. 117-120.
Adam, N., Kampes, B., Eineder, M., 2004. Development of a scientific permanent scatterer system: modifications for mixed ERS/ENVISAT time series. In: Proceedings of Envisat &ERS Symposium, pp. 117-120.
Literature cited 2: Auer, S., 2011. 3D Synthetic Aperture Radar Simulation for Interpreting Complex Urban Reflection Scenarios.Ph.Dthesis, Deutsche Geodatische commission, Reihe C, Nr. 660, Verlag der Bayerischen Akademie der Wissenschaften, 126p.URL:<http://dgk.badw.de/fileadmin/docs/c-660.pdf>.
Auer, S., Gernhardt, S., Bamler, R., 2011. Ghost persistent scatterers related to multiple signal reflections.Geosc.Remote Sens.Lett 8 (5), 919-923.
ID: 60613
Title: Measuring thermal expansion using X-band persistent scatterer interferometry.
Author: Michele Crosetto, Oriol Monserrat, Maria Cuevas-Gonzalez, Nuria Devanthery, Guido Luzi.
Editor: Derek Lichti
Year: 2015
Publisher: Elsevier B.V.
Source: Centre for Ecological Sciences
Reference: PHOTOGRAMMETRY AND REMOTE SENSING Vol 100 84-91 (2015)
Subject: Photogrammetry and Remote Sensing
Keywords: Thermal expansion, Very high resolution imagery, SAR, Interferometry, TerraSAR-X, Ground-based SAR
Abstract: This paper is focused on the estimation of the thermal expansion of buildings and infrastructures using X-band Persistent Scatterer Interferometry (PSI) observations. For this purpose an extended PSI model is used, which allows separating the thermal expansion from the total observed deformation thus generating a new PSI product: the map of the thermal expansion parameter, named thermal map. The core of the paper is devoted to the exploitation of the information contained in the thermal maps: three examples are discussed in detail, which concern a viaduct, a set of industrial buildings and two skyscrapers. The thermal maps can be used to derive the thermal expansion coefficient of the observed objects and information on their static structure. In addition, the paper illustrates the distortions in the PSI deformation products that occur if the thermal expansion is not explicitly modeled. Finally, an inter-comparison exercise is described, where the thermal expansion coefficients estimated by PSI are compared with those derived by a Ku-band ground-based SAR campaign.
Location: T E 15 New Biology Building.
Literature cited 1: Bell, J.W., Amelung, F., Ferretti, A., Bianchi, M., Novali, F., 2008. Permanent scatterer InSAR reveals seasonal and long-term aquifer-system response to groundwater pumping and artificial recharge. Water Resour. Res. 44, W02407. http://dx.doi.org/10.1029/2007WR006152.
Burgmann, R., Hilley, G.E., Ferretti, A., Novali, F., 2006. Resolving vertical tectonics in the San Francisco Bay area from permanent scatterer InSAR and GPS analysis. Geology 34 (3), 221-224.
Literature cited 2: Colesanti, C., Le Mouelic, S., Bennani, M., Raucoules, D., Carnec, C., Ferretti, A., 2005. Detection of mining related ground instabilities using the permanent scatterers technique-a case study in the east of France.Int. J. Remote Sens.26 (1), 201- 207.
Crosetto, M., Agudo, M., Monserrat, O., Pucci B., 2007. Inter-comparison of persistant scatterer interferometry results. In: Proceedings of the Fringe 2007 Workshop, 26-30 November 2007, Frascati, Italy. http://earth.esa.int/workshops/fringe07/papers/papers_posters/s7_5cros.pdf.