Zhao Huanxun.The Principles of Soil Erosion in Huangfuchuan Watershed Valley──Application on Model of Soil Erosion of Small Watershed[J].Research of Soil and Water Conservation,1998,5(03):101-105.
对皇甫川流域土壤侵蚀规律的再认识──小流域土壤侵蚀估算模型的应用
- Title:
- The Principles of Soil Erosion in Huangfuchuan Watershed Valley──Application on Model of Soil Erosion of Small Watershed
- Keywords:
- Huangfuchuan watershed; model of soil erosion; tolerance erosion amount; benefit of reducing sediment
- 摘要:
- 皇甫川流域是我国土壤侵蚀最强烈的地区之一，也是国家开展重点治理的地区之一。通过小流域土壤侵蚀估算模型的应用，得出全流域以砒砂岩、黄土、风沙土为主3类小流域土壤侵蚀模数及允许侵蚀量；得出水土保持治理通过验收、正在治理、未治理3类流域的土壤侵蚀现状；指出在现有水保投资水平下控制土壤侵蚀的植被覆盖度临界值为60%；估算出近10年来水土保持治理的减沙效益为20%。
- Abstract:
- Huangfuchuan watershed valley is one of the most severe soil erosion region. As themajor harnessing region, by means of the application of soil erosion model on small watershed,we obtained 3 types soil erosion modulus and permissible erosion amount of the small watershed, and they are stone sand, loess and sandy soil in the whole watershed,and got harnessingsituation of soil erosion about three types, including examing, harnessing and unharnessedwatersheds, It points out that the critical value of vegetation coverage of harnessing soil erosion under the present investing fund level is 60%,the benefit of reducing sediment on harnessing area in past ten years is estamited about 20%.
参考文献/References:
1 金争平, 赵焕勋等.皇甫川区小流域土壤侵蚀量预报方程研究.水土保持学报, 1991, 5(1)
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备注/Memo
收稿日期:1998-5-20;改回日期:。