粮食灾损量的估计模型

粮食灾损量的估计模型

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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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Earth System SubjectEarth Surface SystemAnthroposphere
Geography SubjectHuman GeographyAgricultural Geography

Detailed Description

粮食灾损量的估计模型

          

式中,Yd为因农业自然灾害而造成的粮食损失量(简称粮食灾损量)为粮食产量随时间变化的自然增长力;yt,yt-1分别为当年和前一年粮食播种面积单产;St,St-1分别为当年和前一年粮食播种面积;Yt,Yt-1分别为当年和前一年粮食总产量。

参考文献:

    郑景云,黄金火:我国近40年的粮食灾损评估。地理学报,1998,536

How to cite

《资源环境数学模型手册》 (2018). 粮食灾损量的估计模型, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/14630be5-f9ce-4cbd-ab87-88268c006837
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Contributor

contributed at 2018-12-04

Authorship

Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
Homepage:  
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