树土壤改良效益评价模型

树土壤改良效益评价模型

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Initial contribute: 2018-12-04

Authorship

Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
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Application-focused categoriesHuman-perspectiveEconomic activities

Model Description

Chinese {{currentDetailLanguage}} Chinese

树土壤改良效益评价模型

 

1.  指标数据处理

(1) 对于水土保持林土壤改良效益成正效应的指标模型:

式中,为第i样地第j指标实测值归一化处理后的相对值;为第i样地第j指标实测值;为第j指标的最大值。

(2) 对于水土保持林土壤改良效益成负效应的指标模型:

式中,为第i样地第j指标实测值归一化处理后的相对值;为第i样地第j指标实测值;为第j指标的最大值;为第j指标的最小值。

(3) 对土壤pH值得处理模型:

式中,为第i样地pH实测值归一化处理后的相对值;为第i样地pH实测值;7.00为中性pH

2.  效益评价计算

(1) 准效益指数模型:

式中,分别为第i样地的土壤肥力指数、抗蚀性能指数和抗冲性能指数;为第j指标的层次单排序权值;为第i样地第j指标实测值归一化处理后的相对数值。

(2) 水土保持林土壤改良效益评价综合指数模型:

式中,为第i样地的土壤改良效益评价综合指数;为第j指标的层次总排序权值;为第i样地第j准效益(土壤肥力、土壤抗蚀性能和抗冲性能)指数;为第i样地第j指标实测值归一化处理后的相对数值。

参考文献

沈慧,姜凤岐,杜晓军:水土保持林土壤改良效益评价模型。生态学报,200020(5)

How to Cite

《资源环境数学模型手册》 (2018). 树土壤改良效益评价模型, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/9ff055d0-d138-4c59-ab99-902e6a6b3ecd
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History

Last modifier : 
XiaoYu He
Last modify time : 
2020-11-06
Modify times : 
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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 : 
XiaoYu He
Last modify time : 
2020-11-06
Modify times : 
View History

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