A Remote Sensing and Geographical Information System based approach to delineate Agro-Ecologically homogeneous geographical areas was developed using soil resources, temperature, rainfall, moisture, and biomass as input layers. Based on delineated Agro-ecological Zones, suitable land use were suggested in Kumaon region of Almora, Nainital, Champawat and Udham Singh Nagar districts.

Following conclusions were drawn from the study,

1. Strong negative relations between temperatures and elevation (i.e. lapse rate) would provide basis for estimating spatial variations in temperature, particularly in the mountain ecosystems.

2. Spatial distribution of PET and Moisture index would help in defining micro-Environment more accurately in the mountains environment.

3. Integration of bio-climate, moisture regimes and regional vegetation biomass in GIS environment could provide a more dynamic way of characterizing homogeneous agro-climatic zones for identifying biophysical and climate characteristics to agricultural productivity.

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