Abstract
Erosion sensitivity analysis of Yamac Watershed using geographical information system and remote sensing
The study was conduct to generate erosion sensitivity analysis of Yamac Watershed located in the south of Bingol city, Turkey. Lithology of the watershed is formed by estrusive and alluvial rocks. Cutting faults in the south of the watershed has increase delevation difference which can reach up to 1000 m between south and north. Erosion severity of the watershed is very high due to its geomorphological, climatic and vegetative properties. Eroded sediments are carried through Murat River to Keban Dam where siltation is formed.
Erosion sensitivity degrees in the watershed were created by using vegetation cover, water density and soil brightness. According the sensitivity map created by remote sensing and geographical information software, and various statistical analyses with multivariate analysis, %47 of watershed area was categorized as high while %30 was medium. Especially slope degrees, water density and vegetation are the major inducements for the severe erosion in the watershed. The erosion become dangerous for cultivated areas in the south of the watershed. Thus, to reduce erosion micro watershed practices should be accelerated.
Keywords
Bingol, Yamac Watershed, Erosion Sensitivity
