植被冠层模型

植被冠层模型

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Contributor(s)

Initial contribute: 2018-12-04

Authorship

Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
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Classification(s)

Method-focused categoriesProcess-perspectivePhysical process calculation
Method-focused categoriesProcess-perspectiveBiological process calculation

Model Description

Chinese {{currentDetailLanguage}} Chinese

植被冠层模型

 

1)能量平衡框架:

模型把植被冠层抽象为平行的3个水平层构成,2个附加层为冠层上方的大气层和下方的土壤层,对每一层有:

 

 

 

 

式中,是第植被层的吸收率;是第植被层的平均层温;是根据冠层几何性质计算的长波通量转移矩阵;是第植被层的短波吸收系数;是长波发射的矢量项;是显热;是气温;是土壤温度;是风速;是相对湿度;是短波通量,是蒸散项;Stefan-Boltzmann常数。

 

2)每一个能量预算组分的计算公式:

 

长波吸收:

 

短波吸收:

 

式中,是第层面的发射率,是短波吸收效率。

 

热函(sensible heat):

 

 

式中,传导效率。

 

土壤水分蒸发蒸腾损失总量:

 

 

式中,是水在温度时蒸发的潜伏热;在树叶温度为时饱和情况下在树叶内部的水分蒸发密度;是树叶温度超过的边界层的自由空气下的水分蒸发密度;边界层面对水分蒸发扩散的阻抗率。

 

参考文献:

Smith J A, Ranson K J, Nguyen D et al;植被冠层模型研究。Remote Sensing of Environment1981,11

How to Cite

《资源环境数学模型手册》 (2018). 植被冠层模型, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/6590acca-2294-43ae-82f3-28b6e24aa994
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History

Last modifier : 
wzh
Last modify time : 
2020-12-31
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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 : 
wzh
Last modify time : 
2020-12-31
Modify times : 
View History

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