Watershed-based soil erosion and sediment yield modeling in the Rib watershed of the Upper Blue Nile Basin, Ethiopia

被引:27
作者
Sinshaw, Berhanu G. [1 ,5 ]
Belete, Abreham M. [1 ]
Mekonen, Belachew M. [6 ]
Wubetu, Tesgaye G. [1 ]
Anley, Tegenu L. [2 ]
Alamneh, Wolelaw D. [2 ]
Atinkut, Haimanot B. [3 ,4 ]
Gelaye, Abay A. [1 ]
Bilkew, Tenaw [7 ]
Tefera, Agumase K. [1 ,5 ]
Dessie, Abebe Birara [3 ]
Fenta, Habtamu M. [3 ]
Beyene, Agumas M. [1 ]
Bizuneh, Belay B. [8 ]
Alem, Habtamu T. [1 ]
Eshete, Daniel G. [1 ]
Atanaw, Simir B. [1 ]
Tebkew, Mekuanent A. [3 ]
Birhanu, Mengistie Mossie [9 ]
机构
[1] Univ Gondar, Sch Civil & Water Resource Engn, Inst Technol, Gondar 196, Ethiopia
[2] Univ Gondar, Dept Management, Gondar 196, Ethiopia
[3] Univ Gondar, Coll Agr & Environm Sci, Gondar 196, Ethiopia
[4] Huazhong Agr Univ, Coll Econ & Management, Wuhan 430070, Hubei, Peoples R China
[5] Bahir Dar Univ, Fac Civil & Water Resources Engn, Bahir Dar Inst Technol, Bahir Dar 26, Ethiopia
[6] Ethiopian Inst Agr Res, Fogera Natl Rice Res & Training Ctr, Woreta, Ethiopia
[7] Ethiopian Publ Hlth Assoc, Addis Ababa, Ethiopia
[8] Debre Markos Univ DMU, Inst Land Adm, Debre Markos 269, Ethiopia
[9] Bahir Dar Univ, Coll Agr & Environm Sci, Bahir Dar, Ethiopia
来源
ENERGY NEXUS | 2021年 / 3卷
关键词
Ethiopia; GIS; Environmental challenge; Sediment yield modeling; Soil erosion; Upper Blue Nile Basin; RISK; DYNAMICS;
D O I
10.1016/j.nexus.2021.100023
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Soil erosion is a major environmental problem that degrades topsoil and agricultural land productivity in moun-tainous areas such as Ethiopia. Soil erosion estimation is critical for the planning of erosion control plans in an agriculture-dependent economy. The current study used the Revised Universal Soil Loss Equation (RUSLE) model to evaluate the spatial distribution of annual soil loss and sediment yield in the Rib watershed. The main factors affecting soil erosion and sediment yield include vegetation cover, topography, soil, and climate. Soil erosion and sediment yield maps should be produced with these elements in account to describe locations with high soil erosion and sediment yield risks and to ensure improved erosion mitigation strategies in watersheds. The five input parameters were rainfall erosivity (R), soil erodibility (K), slope length-steepness (LS), cover-management factor (C), and support practice (P). The RUSLE model, when combined with remote sensing technology, has the ability to provide accurate and low-cost erosion and sediment yield risk maps in the Rib watershed. The estimated average annual soil loss was 25.53 t ha- 1 yr- 1. The soil loss rate was higher in the steeper and topographically dissected part of the watershed. Sediment delivery ratio ranges between 0 and 0.82. The outcome undoubtedly aids in the identification of priority locations for the adoption of sustainable land management and soil erosion mitigation conservation strategies.
引用
收藏
页数:10
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