土壤侵蚀因子定量评价模型

土壤侵蚀因子定量评价模型

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contributed at 2018-12-04

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Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
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Application-focused categoriesNatural-perspectiveLand regions

Model Description

Chinese {{currentDetailLanguage}} Chinese

土壤侵蚀因子定量评价模型

1.  降雨

(1) 侵蚀累积百分比模型:

式中,P为相应的雨量标准。

(2) 降雨强度I模型:

式中,T为起流历时。

(3) 降雨量P模型:

式中,t为降雨历时。

(4) 降雨动能模型:

式中,为模拟降雨的雨滴动能;为天然降雨的雨滴动能;分别为各自的降雨强度。

2.  土壤

(1) 平均入渗率P与土壤含水率W的关系模型:

(2) 分散系数K和结构系数模型:

式中,a为微团聚体测定中<0.001mm的黏粒含量;b为机械分析中<0.001mm的黏粒含量。

3.  地形

大于9%坡度的地形因子模型:

4.  植被

林下降雨量与降雨量p的关系模型:

式中,mn为待定系数。

5.  耕作

黄土高原水平梯田的田间宽度B模型:

式中,α为原地面坡度;β为梯侧坡;H为梯高度。

参考文献

王万忠,焦菊英:中国的土壤侵蚀因子定量评价研究。水土保持通报,199616(5)

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How to Cite

《资源环境数学模型手册》 (2018). 土壤侵蚀因子定量评价模型, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/f296c492-4a0b-4e7e-bb5c-2af1563cebd3
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Last modifier : 
zhengzhong
Last modify time : 
2020-11-02
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Contributor(s)

initial contribute: 2018-12-04

Authorship

Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
Homepage:  
View
Is authorship not correct? Feedback

History

Last modifier : 
zhengzhong
Last modify time : 
2020-11-02
Modify times : 
View History

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