[1]符素华,张卫国,刘宝元,等.北京山区小流域土壤侵蚀模型[J].水土保持研究,2001,8(04):114-120.
　FU Su-hua,ZHANG Wei-guo,LIU Bao-yuan,et al.Beijing Mountain Area Soil Erosion Model[J].Research of Soil and Water Conservation,2001,8(04):114-120.
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北京山区小流域土壤侵蚀模型

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 8 期数: 2001年04期 页码: 114-120 栏目: 出版日期: 1900-01-01
Title:
Beijing Mountain Area Soil Erosion Model
作者:
符素华1, 张卫国1, 刘宝元1, 朱启疆1, 吴敬东2, 段淑怀3, 李永贵3
1. 北京师范大学资源与环境科学系 北京100875;
2. 北京市水利科学研究所 北京100044;
3. 北京市水土保持工作总站 北京100073
Author(s):
FU Su-hua1, ZHANG Wei-guo1, LIU Bao-yuan1, ZHU Qi-jiang1, WU Jing-dong2, DUAN Shu-huai3, LI Yong-gui3
1. Resources and Environment Department of Beijing Normal University, Beijing 100875, China;
2. Beijing Institute of Water Science, Beijing 100044, China;
3. The General Station of Soil and Water Conservation of Beijing, Beijing 100073, China
关键词:
北京山区; 小流域; 土壤侵蚀; 模型; GIS
Keywords:
Beijing mountain areas; small watershed; soil erosion; model; GIS
分类号:
S15.1
摘要:
北京山区土壤侵蚀模型是一个流域尺度的、以次暴雨为基础的与GIS相结合的分布式模型。在栅格单元的基础上,模型可以计算每一栅格单元的径流量和坡面侵蚀量。由于考虑了汇流汇沙过程,模型也可以模拟每一单元格的洪峰流量、淤积量和产沙量。模型应用结果表明,该模型具有一定的计算精度。该模型可以模拟流域内土壤侵蚀的空间分布和评价不同土地利用、水土保持措施等对水土流失的影响。该土壤侵蚀模型的建立,可为北京山区的土壤侵蚀灾害评价和水土保持规划和设计提供依据。
Abstract:
The Beijing mountain area soil erosion model was developed on the basis of the new technology and new research considered soil erosion on steep slope. The BESEM is a computer program which uses distributed parameters and is event oriented. The model was developed to predict erosion from support practices and to accommodate spatial variability in topographies, soil properties, and land use conditions within small watersheds. The model contains three primary components: hillslope, channel and impounds such as check dam. Each component calculates rainfall excess by a Green Ampt Min Larson infiltration equation or SCS curve number method,according to the data of continuous record of rainfall; peak flow rate by simplified regression equation; soil erosion by CSLE; and deposition soil as a function of sediment detachment, sediment transport capacity, and existing sediment load in the flow. The test results show that the model can precisely assess the runoff, peak flow rate and sediment yield. The model can also predict the distribution of runoff and soil loss. So the model can be used to evaluate the effect of variation of land use and support practice on runoff, peak flow rates and soil loss. The model can also be served as the soil and loss evaluation, management and the design of the support practice.

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备注/Memo

收稿日期:2001-8-25。
作者简介:符素华,(1973- ),博士后,从事土壤侵蚀模型研究.

更新日期/Last Update: 1900-01-01