ID: 51322
Title: A Region-based Level Set Segmentation for Automatic Detection of Man-made Objects from Aerial and Satellite Images
Author: Konstantinos Karantzalos and Demertre Argialas
Editor: Russell G.Congalton
Year: 2009
Publisher: ASPRS, Vol 75, No 6, June 2009
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Photogrammetric Engineering and Remote Sensing
Keywords: Contour, roads, buildings, aerial and satellite images
Abstract: A region-based level set segmentation was developed for the automatic detection of man-made objects from aerial and satellite images. The essence of the approach is to optimize the position and the geometric form of an evolving curve, by measuring information within the regions that compose a particular image partition based on their statistical description. The present region-based variational model is fully automated without the need to manually specify the position of the initial contour. Furthermore, it converges after a small number of iterations, allowing real-time applications. The developed algorithm was tested for the detection of roads, buildings and other man-made objects in a number of aerial and satellite images. The effectiveness of the algorithm is demonstrated by the experimental results and the performed qualitative and quantitative evaluation.
Location: 231
Literature cited 1: None
Literature cited 2: None
ID: 51321
Title: Accuracy Evaluation and Sensitivity Analysis of Estimating 3D Road Centerline Length using Lidar and NED
Author: Hubo Cai and William Rasdorf
Editor: Russell G.Conalton
Year: 2009
Publisher: ASPRS, Vol 75, No 6, June 2009
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Photogrammetric Engineering and Remote Sensing
Keywords: Roads, GIS, lidar, NED,DMI
Abstract: Highway networks are represented by linear spatial objects (road segments). Having accurate length information of road centerlines is critical in transportation. This paper presents a geographic information system (GIS)-based approach that overlays planimetric road centerlines and elevation data to model road centerlines in a 3D space and estimate their lengths. Elevation sources included light detection and ranging (lidar) and the National Elevation Dataset (NED). The estimated distances were compared to distance measurement instrument (DMI)-measured distances to evaluate the accuracy. The effects of elevation datasets with varying vertical accuracies were assessed. The relationship between road geometric properties and the accuracy of distance estimates was examined. We found that (a) the proposed 3d approach is efficient in estimating 3D road centerline distances, (b) using lidar point data improves the accuracy by 28 percent over the use of NED, and (c) certain road geometric properties have direct relationship with the accuracy of distance estimates.
Location: 231
Literature cited 1: None
Literature cited 2: None
ID: 51320
Title: Precocious flowering in Eucalyptus deglupta Blume. saplings
Author: A.K.Sharda, S.K.Verma and C.Moharana
Editor: Dr.V.R.R. Singh
Year: 2008
Publisher: The Indian Forester, Vol 134, No 11, November 2008
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Forestry
Keywords: None
Abstract: None
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 51319
Title: Occurrence of vivipary in Papaya plant (Carica papaya L.)
Author: Tapas K. Chakraborty and Sandip Dev Chaudhuri
Editor: Dr.V.R.R. Singh
Year: 2008
Publisher: The Indian Forester, Vol 134, No 11, November 2008
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Forestry
Keywords: None
Abstract: None
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 51318
Title: Diversity of seed plants in Deoghar Forest Range, Chakrata Forest Division, Dehra Dun
Author: Vishamber Joshi, S.P.Joshi and Sumer Chand
Editor: Dr.V.R.R. Singh
Year: 2008
Publisher: The Indian Forester, Vol 134, No 11, November 2008
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Forestry
Keywords: None
Abstract: None
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 51317
Title: Forest cover assessment and trend (1970s to 2001) in Central India using Remote Sensing and GIS
Author: Akhlaq Amin Wani
Editor: Dr.V.R.R. Singh
Year: 2008
Publisher: The Indian Forester, Vol 134, No 11, November 2008
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Forestry
Keywords: Forest Cover, Remote Sensing, GIS, Landsat MSS, Central India zone
Abstract: Forest cover assessment in India is being carried out using satellite remote sensing for more than two decades. However, the classification system, scale and methodology make it difficult to collate this information at regional scale. In the present study an attempt has been made to map forest cover of Central India on 1:50000 scale using satellite data of 1970s. Landsat MSS data of 1970s has been used for mapping through systematic sampling. The area calculated in sampling grids of size 5 ' x5 ' has been extrapolated to the whole area.The total forest cover of the zone through extrapolation in 1970s was 1,03,655.79 km2. This attempt to assess the forest cover of Central India Zone has been an initiative of getting to know about the past. It gives an estimate fo the forest lost or gained within the biogeographical Zone. While compiling the data of forest cover (from 1991-2001) of the Central India Zone from Forest Survey of India, the apex body of forest monitoring in India and comparing it with the area calculated from the present study, it has been realized that there is no regular trend in the forest cover percentage from 1970s till 2001.
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 51316
Title: Monoterpene variation in Turpentine of High Resin Yielders and check trees in Chir pine (Pinus roxburghii Sargent)
Author: Ashish U.Nimkar, Kulwant Rai Sharma and Soniya A. Nimkar
Editor: Dr.V.R.R. Singh
Year: 2008
Publisher: The Indian Forester, Vol 134, No 11, November 2008
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Forestry
Keywords: Chir pine (Pinus roxburghii Sargent), Monoterpene variation, Turpentine, High Resin Yielders (HRYs), Check trees
Abstract: Twenty six high resin yielders (HRYs) and ten check trees of Chir pine (Pinus roxburghii) marked at different locations of Himachal Pradesh were evaluated for monoterpene composition and their variation. Among monoterpenes, alpha-pinene content was highest in the Bumbloo-5B HRY followed by Ghandir-2 and UHF-3 HRYs. Beta-pinene + delta-3-carene is the major constituent with alpha-pinene and other terpenes the next in proportion and longifolene as minor constituent. The variation in alpha-pinene, beta-pinene + delta-3-carene, other terpenes and longifolene content may be due to degradation of one component into another. Knowledge of the variation pattern in monoterpene composition offers the possibility for identifying geographic origin for further improvement studies.
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 51315
Title: Study on the status of rhizobial nodulation in Acacia auriculiformis and A.mangium
Author: K.S.Tamil Selvi, V.Mohan and K.Udaiyan
Editor: Dr.V.R.R. Singh
Year: 2008
Publisher: The Indian Forester, Vol 134, No 11, November 2008
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Forestry
Keywords: Rhizobial nodulation, Acacia auriculiformis, A. mangium
Abstract: Acacia auriculiformis and Acacia mangium are the two Australian acacias that are used for plantation forestry in the tropics. These trees are associated with rhizobia in introduced area. The present study investigate the status of rhizobial nodulation in these two acacias planted under two different experimental trials of South India. The number of nodules in these species at two different sites ranged between 3 and 30 per gram rhizosphere soil. The influence of climatic and edaphic factors on the nodule status was also determined and discussed.
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 51314
Title: Variation in seed and fruit characters of some commercially important agroforestry species
Author: Sanjeev Thakur, Kamal Sharma, Charan Singh and Atul Gupta
Editor: Dr.V.R.R. Singh
Year: 2008
Publisher: The Indian Forester, Vol 134, No 11, November 2008
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Forestry
Keywords: Seed and Fruit characters, Variation, Commercially Important Agroforestry Species, Aonla (Emblica officinalis Gaertn), Jamun (Syzygium cumini), Soapnut (Sapindus mukorossi)
Abstract: Aonla, Jamun and Soapnut are the wild fruits/nuts which are important from commercial point of view. The present studies were carried out to assess natural variation in these species in Himachal Pradesh so as to screen out their promising strains for higher and quality production. A wide range of variation was observed in fruit and seed characters of these species which revealed that selection for their improvement could be very effective.
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 51313
Title: Effect of root culturing and fertilizers on morphology and outplanting survival of Ulmus villosa seedlings
Author: Sanjeev K.Chauhan, G.K.Sharma and Charan Singh
Editor: Dr.V.R.R. Singh
Year: 2008
Publisher: The Indian Forester, Vol 134, No 11, November 2008
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Forestry
Keywords: Ulmus villosa seedlings, Root culturing, Fertilizers, Morphology, Outplanting survival
Abstract: Seedlings on raised beds were subjected to a variety of root culturing and fertilizer treatments. Seedlings parameters were recorded at the time of outplanting. The undercutting and wrenching treatments produced shorter and thin stemmed seedlings with reduced shoot, seedling and total root dry weight in comparison to the untreated seedlings. The number, length and dry weight of lateral roots were stimulated in treated seedlings. The application of N and P fertilizers individually and in conjuction with undercutting and wrenching also showed significant improvement in growth and biomass characters. The application of 80 kg N/ha and 30 kg P2O5 /ha were considered appropriate for better performance of seedlings. The seedlings were better conditioned to withstand outplanting stress and showed improved survival over the respective control.
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 51312
Title: Wood anatomy of Shorea of Yellow Meranti (Meranti Damar Hitam) group of Malay Peninsula
Author: P.K.Pande, Krishna Bhandari and Magan Singh
Editor: Dr.V.R.R. Singh
Year: 2008
Publisher: The Indian Forester, Vol 134, No 11, November 2008
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Forestry
Keywords: Wood anatomy, Microscopic wood identification, Shorea, Yellow Meranti (Meranti Damar Hitam) group, Malay Peninsula
Abstract: The study deals with the variations in physical, gross and microscopic anatomical features of different species of Shorea of Yellow Meranti group of Malay peninsula. Variance ratio (F) test indicated that inter-specific differences among the wood element dimensions of Shorea were significant for vessel element length, wall-thickness and fibre-diameter and non-significant for fibre length and wood density (? =0.05). However, intra-specific differences were non-significant for all the anatomical characters. Vessel element-length and diameter showed negative while wood density showed positive correlation with fibre wall thickness. A dichotomous identification key is presented on the basis of anatomical characters to the species level of Yellow Meranti group. The dichotomy is based on a pair of contrasting characters like ray height, ray width, presence/absence of prismatic crystals and gum canal dimensions. Differences in quantitative characters were analyzed using ' t ' test for the mean. Hierarchical cluster analysis is done using qualitative and quantitative wood anatomical characters to understand the affinity of Shorea with in Yellow Meranti group and with other group of Shorea. S. maxima showed 0% similarity with other members of this group. S.faguetiana and S.multiflora showed 46% similarity with s.gibbosa, S.hopeifolia, S. resina-nigra and S.balanocarpoides. S.balanocarpoides showed 32% similarity with S.gibbosa, S.hopeifolia and S.resina-nigra.
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 51311
Title: Reproductive biology of Terminalia arjuna (Roxb.) Wt. & Arn.
Author: Seema Chauhan, Shashi Bala Sharma and S.V.S.Chauhan
Editor: Dr.V.R.R. Singh
Year: 2008
Publisher: The Indian Forester, Vol 134, No 11, November 2008
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Forestry
Keywords: Terminalia arjuna, Floral biology, Breeding systems, Pollination
Abstract: Terminalia arjuna, a valuable medicinal tree. The bark of the tree is not only used to lower blood pressure but is extremely useful in cardio-vascular diseases. It , flowers during April-July. The flowers are hermaphrodite, actinomorphic and epigynous and each has one whorl of gamotepalous perianth. They are borne on pendulous terminal and axillary spikes. Flowers open daily during 0500-0630 h and offer both pollen and nectar as floral rewards. Foragers include honeybee, butterflies, wasps, flies, ants and sunbirds. The fruiting behaviour indicates that this species shows faculative xenogamy, but mostly eliminates growing fruits from self-pollinated flowers. The facultative breeding system is considered to be adaptive for T.arjuna for colonization as it facilitates fruit-set through self-pollination. Natural fruit-set is 48%. The winged and woody fruits are dispersed by wind and birds.
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 51310
Title: Variability in cone and seed characteristics and germination behaviour in various provenances of Himalayan Cypress (Cupressus torulosa Don).
Author: B.S.Rawat, C.M.Sharma and Sumeet Gairola
Editor: Dr.V.R.R. Singh
Year: 2008
Publisher: The Indian Forester, Vol 134, No 11, November 2008
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Forestry
Keywords: Himalayan Cypress (Cupressus torulosa Don), Provenances, Cone and Seed characteristics, Variability, Germination behaviour
Abstract: Five provenances of Cupressus torulosa collected from Garhwal Himalaya were studied for their cone and seed characteristics and germination behaviour. The three different sizes of cones i.e., large (1.98 x 1.71 - 2.23 x 1.78 cm), medium (1.61 x 1.38 - 1.81 x 1.60 cm ) and small (1.38 x 1.71 - 1.60 x 1.49 cm ) were observed in this species. The cone moisture content varied from 46.55-62.05%. The largest seeds were observed in Mandal provenance (0.48 + 0.004 cm x 0.44 + 0.007 cm) and the smallest (0.25 + 0.007cm x 0.22 + 0.005 cm) in Gwaldam provenance. The seed mass was maximum (1.11 + 0.036 g/100 seeds on fresh weight basis) in New Tehri provenance and minimum (0.540 + 0.011g/100 seeds on the fresh weight basis) in Mandal provenance. The highest germination (66.0 + 3.68%) was observed in Mandal provenance at 100C under pre-chilled conditions and the lowest germination (14.0 + 1.00%) at 20oC in Mandal provenance under controlled conditions.
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 51309
Title: Assessment of floristic composition in JFM-managed and adjoining natural forests in Doni area of Gadag Division, Karnataka
Author: V.Suryanarayan, K.V.Vasantha Reddy, H.Pradeep Kumar, T.S.Hareesh and Vijay Mohan Raj
Editor: Dr.V.R.R. Singh
Year: 2008
Publisher: The Indian Forester, Vol 134, No 11, November 2008
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Forestry
Keywords: Floristic composition, JFM, Scrub forest, Importance Value Index, Enrichment, Karnataka
Abstract: The species diversity and richness indices in JFM managed and adjacent scrub forests of Doni indicates the success of JFM approach in Karnataka. The importance Value Index, Shannon and Simpson ' s diversity indices were analyzed for both JFM managed and adjacent scrub forests. In JFM managed forests, there was 248 individuals about 10 cm GBH were observed from 12 quadrate, which amounts to a density of 517 individuals per ha. These 248 individuals were represented by 18 species and amounts to a total basal area of 10.80 m2. The results inferred that, the proper protection from grazing and management of forests by involving local people has resulted in increased species composition. Even the enrichment of these degraded forests by local tree species was found to be a viable option to improve the overall density of the species.
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 51308
Title: Role of Medicinal Plants in Health Care and Rural Economy in the tribals of Satpura plateau region of Central India
Author: A.K.Pandey and P.K.Shukla
Editor: Dr.V.R.R. Singh
Year: 2008
Publisher: The Indian Forester, Vol 134, No 11, November 2008
Source: Centre for Ecological Science,Indian Institute of Science, Bangalore-12
Reference: None
Subject: Forestry
Keywords: Satpura plateau, Central India, Medicinal plants, Health care, Rural economy, Tribals
Abstract: The Satpura plateau region of Central India is home of numerous herb species. The agro-climatic conditions prevailing in the region provides an ideal habitat for the natural growth of variety of plants and herbs, which provide raw materials for pharmaceutical, phytochemical, food, flavoring and cosmetic industries. The paper provides information on 92 medicinal plants used by the Gond, Bharia and Korku tribes of Chhindwara, Betul, Hosangabad and Seoni district of Madhya Pradesh, India, for the treatment of various diseases. Traditional medicine remains an integral part of the health system in this region of Central India. Medicinal plants of forest origin hold great promise to enhance the health and source of livelihood to the forest dwellers.
Location: 241
Literature cited 1: None
Literature cited 2: None