Geographic
  • Year: 2020
  • Volume: 15
  • Issue: 1

Hypsometry and delineation of soil erosion zones in Tlawng River Basin using geoinformatics

  • Author:
  • David A Lalramchulloa1, Ch. Udaya Bhaskra Rao2, P. Rinawma3
  • Total Page Count: 14
  • Page Number: 11 to 24

1David A. Ramchullova is a Research Scholar in the Department of Geography & RM, Mizoram University

2Dr. Ch. Udaya Bhaskara Rao is an Associate Professor in the Department of Geography & RM, Mizoram University

3P. Rinawma is a Professor in the Department of Geography & RM, Mizoram University

Online published on 24 May, 2021.

Abstract

Hypsometry is considered as an important and effective tool to understand the stages of geomorphic evolution of a river catchment. The hypsometric curve and hypsometric integral are very significant indicators which reveal watershed conditions. Tlawng is the longest river in Mizoram with 5846 km2 catchment of which considerable area is used for cultivation. The hypsometric analysis of 37 sub basins of Tlawng river basin was carried out in GIS environment by area elevation method for analyzing terrain conditions. The hypsometric integral values of the sub-basins of Tlawng river basin show that the terrain is shifting from mature to old stage of landscape development which indicate moderate to severe erosion in about 2028.87 km2 area.

Keywords

Hypsometry, Hypsometric curve, Geomorphic evolution, Landscape development