SHIFTING CULTIVATION IN RELATION TO SLOPE PATTERN AND ELEVATION IN KARBI ANGLONG DISTRICT OF ASSAMRashmi Sarkar, Ashok Kumar Bora and Tirthankar Sarma
Shifting cultivation is practiced along the hill slopes in Karbi Anglong District for subsistence living. It is an old agricultural system in which plot of land are cultivated temporally. Shifting cultivation involves cleaning of forest area in hill slope. Shifting cultivation is also an adaptive forest management practice in which hill and mountain are productively utilized. The aim of this research paper is to investigate the slope pattern and elevation of Karbi Anglong District of Assam. Another aim of this study is to analyze the distributional pattern of shifting cultivation and its relation to slope of the study area. Supervised Classification method with maximum likelihood algorithm has been used for land use classification and demarcation of jhum practiced area in Arc GIS 10.2.1 and this method is well recognized for the land use classification throughout the world. For ground truth verification and error reduction field study is carried out using the GPS. Elevation and slope map of the study area has been prepared with the help of contour line and SRTM (1arc) data downloaded from USGS of the study area. Digital elevation map has been prepared to show slope patter and elevation of Karbi Anglong district. Slope up to twenty degree are ideal for shifting cultivation in the study area.