Golaghat district, the present study area is
physiographcally a part of the Brahmaputra valley of Assam
covering about 335879.83 hectares (figure-1). Although the
valley exhibits quite a monotonous landscape, the study area is a
combination of landscape with altitudinal variation in the valley
itself from flood plain areas of the Brahmaputra and its
tributaries through high old ตะกอนน้ำ
to still higher foot hills
areas of the tertiary folds in Nagaland and the Cambrian land