持续农业的评价模型

持续农业的评价模型

  44

Contributor

contributed at 2018-12-04

Authorship

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

Classification(s)

Earth System SubjectEarth Surface SystemAnthroposphere
Geography SubjectHuman GeographyAgricultural Geography

Detailed Description

持续农业的评价模型

(1) 持续性T

         

式中,Yn为统计期间某一年的生产率;a为起始的生产率;n为统计期间的第几年。

(2) 均衡性E

  

式中,CV为变异系数;为平均值;SD为标准差。

(3) 协调性H

       

式中,Al为农、林、牧、副、渔各部门产值分别占总产值的比例。

参考文献:

   

How to cite

《资源环境数学模型手册》 (2018). 持续农业的评价模型, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/f2103be7-7da8-489f-8c6a-dfcc6913eae1
Copy

QR Code

Contributor

contributed at 2018-12-04

Authorship

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

QR Code

You can link related {{typeName}} from your personal space to this model item, or you can create a new {{typeName.toLowerCase()}}.

Model Content & Service

These authorship information will be submitted to the contributor to review.