土壤水分含量的遥感估测模型

土壤水分含量的遥感估测模型

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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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Method-focused categoriesData-perspectiveRemote sensing analysis

Model Description

Chinese {{currentDetailLanguage}} Chinese

土壤水分含量的遥感估测模型

(1)    土壤水分场的空间及时间的自相关函数可表示为:

式中,是距离或时间差;是土地表面相关变化的标度;是大气胁迫相关变化的标度;是大气表面相关变化的方差;是大气胁迫相关变化的方差。

(2)    土壤水分含量可通过下式估计:

式中,是外推到参考角度的后向散射系数;分别是的最大值和最小值,分别对应于土壤表层干燥及饱和湿润的情形;t是时间。

(3)    土壤水分指数定义为:

土壤水分W相应于时间t的变化曲线可根据估计:

  

式中,分别是W的最大值和最小值。

(4)    植物可获取水分可表示为:

式中,是枯萎值,是土地的容量,是总的水分容量。

参考文献

    Wagner W,LemoineG,Rott H:根据ERS散射仪及土壤数据估计土壤水分的方法。Remote Sensing of Environment,199970

 

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How to Cite

《资源环境数学模型手册》 (2018). 土壤水分含量的遥感估测模型, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/3ea8f47c-3fed-419e-b526-bb136b5e594a
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Last modifier : 
haolingchen
Last modify time : 
2020-10-29
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Contributor(s)

Initial contribute: 2018-12-04

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Authorship

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

History

Last modifier : 
haolingchen
Last modify time : 
2020-10-29
Modify times : 
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