Assessment of soil erosion using RUSLE, GIS and remote sensing in NW Ethiopia

被引：104

作者：

Zerihun, Mengesha ^{[1
]}

Mohammedyasin, Mohammed S. ^{[2
]}

Sewnet, Demeke ^{[1
]}

Adem, Anwar A. ^{[3
]}

Lakew, Mindesilew ^{[4
]}

机构：

[1] Debre Markos Univ, Inst Technol, Dept Civil Engn, POB 269, Debre Markos, Ethiopia

[2] Bahir Dar Univ, Sch Earth Sci, Dept Geol, POB 79, Bahir Dar, Ethiopia

[3] Bahir Dar Univ, Coll Agr, Dept Nat Resources Management, POB 79, Bahir Dar, Ethiopia

[4] Debre Markos Univ, Dept Hydraul & Water Resources Engn, Inst Technol, POB 269, Debre Markos, Ethiopia

来源：

GEODERMA REGIONAL | 2018年 / 12卷

关键词：

Soil loss; Soil and water conservation; Severity class; RUSLE; Alisols; Dembecha District; Upper Blue Nile; BLUE NILE; NORTHERN ETHIOPIA; SEDIMENT YIELD; WATER EROSION; LOSS EQUATION; RIVER-BASINS; HUMAN IMPACT; MODELS; CONSERVATION; DEPOSITION;

D O I：

10.1016/j.geodrs.2018.01.002

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

This study integrates the Revised Universal Soil Loss Equation (RUSLE) with GIS and remote sensing techniques to assess soil erosion severity in the Dembecha District, Northwestern Ethiopia. Digital elevation model (DEM), land use/land cover (LU/LC) maps, and rainfall and soil data were used as an input to identify the most erosion prone areas. Accordingly, the district was classified into five soil loss severity classes: very slight (24%), slight (49%), moderate (11%), severe (3%) and very sever (13%) risk classes. Most of the district was characterized by very slight to slight soil erosion rates which is associated with the gentle slope covered by Alisols and Cambisols. The mean annual soil loss in the district is estimated to be 49 t ha(-1) yr(-1) , i.e. total soil loss of 526,996 t yr(-1). Hence, soil and water conservation (SWC) measures should prioritize based on soil erosion severity levels.

引用

页码：83 / 90

页数：8

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