IRC-1C Data
Land Cover Analyses : The NDVI image generated from the LISS-III bands(Red and NIR) of IRS-1C was used to distinguish the vegetative and non-vegetative areas. It roughly indicates the extent of canopy in the region. NDVI computed for Kolar district is shown in Figure 1. The vegetative cover in Kolar district as per NDVI analyses is 49.3 % while, 50.7 % is non-vegetative.

Land Use Analyses : Kolar district multi spectral data of IRS-1C is classified through supervised classification approach. The Maximum likelihood classification method is found to be more appropriate (based on confusion matrix analyses). Composition of land use ( hectares ) in Kolar as per maximum likelihood classification approach is given in Figure 2 , corresponding details are given in Table 1.

Talukwise Land use Analyses: Overlaying district layer with taluk boundaries on the classified district image, talukwise land use details were obtained, same is listed in Table 2.1 and corresponding percentage share is given in Table 2.2

The area under Prosopis juliflora in Gauribidanur taluk is found to be 5404 hectares (adult). Considering the average annual productivity of 7.4 t/ha, total bioresource available would be about 39,990 t/yr.

Household survey show that fuelwood requirement in Kolar district ranges from 1.75 to 2.5 kg/person/day and average consumption is 1.3 kg/person/day. The annual fuelwood demand in taluk is 124,212 tonnes (as per 2001 population).

This computation shows, that Prosopis juliflora patches would cater the annual fuelwood requirement of 32.2% of Gauribidanur taluk households.