KONG Ya-ping,ZHANG Ke-li,CAO Long-xi.Appraise Slope Length Factors in Soil Erosion Study[J].Research of Soil and Water Conservation,2008,15(04):43-47,52.
土壤侵蚀研究中的坡长因子评价问题
- Title:
- Appraise Slope Length Factors in Soil Erosion Study
- Keywords:
- slope length; soil erosion; runoff and sediment process
- 分类号:
- S157.1
- 摘要:
- 坡长是决定坡面能量沿程变化，影响坡面径流与水流产沙过程的重要地貌因素之一。进行土壤侵蚀预报，建立土壤侵蚀预报模型，离不开对坡长因子的评价。关于坡长的研究从定性描述到作为模型因子的定量考察已经进行的十分深入，但大多是经验性的，从物理意义上对坡长因子的研究还处于初步阶段，尤其我国在这方面的研究更为欠缺。在总结国内外前人工作的基础上，对土壤侵蚀在坡长方面的研究提出了一些问题和展望，指出在坡长因子评价方面应加强对侵蚀产沙过程的研究。
- Abstract:
- Slope length is one of the important topographical factors that can determine the energy change along a slope and affect the overland runoff and sediment process. We must appraise the slope length factor in order to establish soil erosion equation and to predict soil erosion. Slope length factor has been deeply studied both in the way of describing its character and treating it as a factor in a model. But these studies are mostly empirical. Studies on the physical meaning of slope length are still primary. Especially in our country, few works can be seen in this field. Based on studies both inside and outside our country, this paper has put forward some questions about slope length factor in soil erosion study and makes some expectation. It pointed out that study on erosion process should be strengthened when we appraise slope length factor.
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备注/Memo
收稿日期:2007-11-22。
基金项目:国家自然科学基金（40671112）
作者简介:孔亚平（1976- ），女，山东金乡人，硕士研究生，主要从事交通建设生态环境保护方面的科研工作。E-mail：ypkong@163.com