土壤侵蚀发展动态SD模型

土壤侵蚀发展动态SD模型

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Initial contribute: 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

土壤侵蚀发展动态SD模型

(1) 人口:

式中,POP为总人口;POR为人口增长率。

(2) 耕地面积与粮田面积:

FMLK=FMLJ+DT(IFM.JK-DFM.JK)

GRN.K=GRN.J+DT(SND.K/RUT.K)

GRA.K=min(0.8FMLKPR.K,GRN.K)

式中,FMLGRAGRN分别为耕地、粮田和需粮播种面积;IFMDFM分别为增加和减少的耕地面积;PR为复种指数;SND为粮食供需差;RUT为预测粮食亩产量。

(3) 林地面积:

式中,FRSUFRS分别为林地面积与宜林面积;IFR为年造林保存面积;DFR为年采伐面积;为造林发展速度。

(4) 载畜量:

式中,AMHIAMDAM分别为牧畜存栏数、年增加数和出栏数。

(5) 轻度侵蚀面积:

式中,LESILEDLE分别为轻度侵蚀面积、轻度侵蚀增加面积和治理面积;CLE为由轻度向中度发展的转移面积。

(6) 中度侵蚀面积:

式中,MES为中度侵蚀面积;DME为治理的中度侵蚀面积;CMS为中度向强度侵蚀发展的转移面积。

(7) 强度侵蚀面积:

式中,SES为强侵蚀面积;DSE为治理减少的强侵蚀面积。

(8) 土壤侵蚀总量:

式中,分别为轻度、中度和强度侵蚀的平均侵蚀模数。

参考文献

张汉雄,邵明安:陕晋黄土丘陵区土壤侵蚀发展动态仿真研究。地理学报,1999,54(1)

How to Cite

《资源环境数学模型手册》 (2018). 土壤侵蚀发展动态SD模型, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/a5bb33c1-404c-4495-bdec-3cc1360cffb2
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Last modifier : 
zhengzhong
Last modify time : 
2020-11-03
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Contributor

Initial contribute: 2018-12-04

Co-contributor(s)

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 : 
2020-11-03
Modify times : 
View History

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