| 梯田建设和淤地坝淤积对土壤侵蚀影响的定量分析(英文) |
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| 引用本文： | 高海东,李占斌,李鹏,贾莲莲,张翔.梯田建设和淤地坝淤积对土壤侵蚀影响的定量分析(英文)[J].地理学报(英文版),2012,22(5):946-960. |
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| 作者姓名： | 高海东 李占斌 李鹏 贾莲莲 张翔 |
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| 作者单位： | Institute of Soil and Water Conservation,CAS and Ministry of Water Resources;Key Lab of Northwest Water Resources and Environment Ecology of Ministry of Education,Xi’an University of Technology;Upper and Middle Yellow River Bureau,Yellow River Conservancy Commission of the Ministry of Water Resources |
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| 基金项目： | National Key Basic Research Program of China(973 Program),No.2011CB403302;National Natural Science Foundation of China,No.40971161;No.41071182 |
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| 摘 要： | To study the influences of terraced field construction and check-dam siltation on soil erosion of a watershed,we built a simplified watershed model for the Loess Plateau hilly-gully region including terraced fields,slope farmlands,steep-slope grasslands,and dam farmlands,and defined three states of watershed(i.e.,pioneer,intermediate,and climax stages,respectively).Then,the watershed soil erosion moduli at various stages were studied by using a revised universal soil loss equation.Our results show that the pioneer and climax stages are the extreme states of watershed soil-and-water conservation and control;in the pioneer stage,the soil erosion modulus was 299.56 t ha-1 a-1 above the edge of gully,136.64 t ha-1 a-1 below the edge of gully,and 229.74 t ha-1 a-1 on average;in the climax stage,the soil erosion modulus was 39.10 t ha-1 a-1 above the edge of gully,1.10 t ha-1 a-1 below the edge of gully,and 22.81 t ha-1 a-1 on average;in the intermediate stage,the soil erosion modulus above the edge of gully exhibited an exponential decline along with the increase in terraced field area percentage,while the soil erosion modulus below the edge of gully exhibited a linear decline along with the increase in siltation height.
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| 关 键 词： | soil-and-water conservation Revised Universal Soil Loss Equation succession the Loess Plateau |
Quantitative study on influences of terraced field construction and check-dam siltation on soil erosion |
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| Haidong Gao,Zhanbin Li,Peng Li,Lianlian Jia,Xiang Zhang.Quantitative study on influences of terraced field construction and check-dam siltation on soil erosion[J].Journal of Geographical Sciences,2012,22(5):946-960. |
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| Authors: | Haidong Gao Zhanbin Li Peng Li Lianlian Jia Xiang Zhang |
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| Institution: | 1.Institute of Soil and Water Conservation,CAS and Ministry of Water Resources,Yangling 712100,Shaanxi,China;2.Key Lab of Northwest Water Resources and Environment Ecology of Ministry of Education,Xi’an University of Technology,Xi’an 710048,China;3.Upper and Middle Yellow River Bureau,Yellow River Conservancy Commission of the Ministry of Water Resources,Xi’an 710021,China |
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| Abstract: | To study the influences of terraced field construction and check-dam siltation on soil erosion of a watershed,we built a simplified watershed model for the Loess Plateau hilly-gully region including terraced fields,slope farmlands,steep-slope grasslands,and dam farmlands,and defined three states of watershed(i.e.,pioneer,intermediate,and climax stages,respectively).Then,the watershed soil erosion moduli at various stages were studied by using a revised universal soil loss equation.Our results show that the pioneer and climax stages are the extreme states of watershed soil-and-water conservation and control;in the pioneer stage,the soil erosion modulus was 299.56 t ha-1 a-1 above the edge of gully,136.64 t ha-1 a-1 below the edge of gully,and 229.74 t ha-1 a-1 on average;in the climax stage,the soil erosion modulus was 39.10 t ha-1 a-1 above the edge of gully,1.10 t ha-1 a-1 below the edge of gully,and 22.81 t ha-1 a-1 on average;in the intermediate stage,the soil erosion modulus above the edge of gully exhibited an exponential decline along with the increase in terraced field area percentage,while the soil erosion modulus below the edge of gully exhibited a linear decline along with the increase in siltation height. |
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| Keywords: | soil-and-water conservation Revised Universal Soil Loss Equation succession the Loess Plateau |
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