蒸发的抗阻模型及气孔阻抗计算公式

蒸发的抗阻模型及气孔阻抗计算公式

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Initial contribute: 2018-12-04

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Affiliation:  
岳天祥编著
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yue@lreis.ac.cn
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Application-focused categoriesNatural-perspectiveLand regions
Application-focused categoriesNatural-perspectiveAtmospheric regions

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蒸发的抗阻模型及气孔阻抗计算公式

 

1.蒸发的抗阻模型

(1)Penman公式:

式中,E1为该叶片的蒸发速率;A1为供给蒸发的可利用能;d为叶边界层外相邻空气中的饱和差,q为比湿,qs(T)为气温T时的饱和比湿;l为水的汽化热;Cp为空气的定压比热;ra1rs1为叶片的一对水汽扩散的抗阻。

(2)蒸发的单层模式:

式中,rsra为模拟的“整体”气体阻抗和“整体”边界层阻抗;AE尾单位地面的可利用能和蒸发;dR我冠层上某参考高度的饱和差。

(3)蒸发的多层模型:

式中,下标i表示第i叶层;di为第i层的饱和差。

2.气孔阻抗计算公式

(1)一般计算公式:

式中,r为气孔阻抗;a为系数;s为太阳辐射;T为叶温;V为空气饱和差;CCO2的浓度;W为土壤水分势;f为函数。

(2)卢振民计算公式:

式中,gc为小麦的叶片传导度;rs为气体阻抗;I*la为有效叶面积指数;K为净辐射衰减系数;Rn为净辐射;D为饱和差;y1为叶片水分势。

(3)蒸发对空气动力和气孔阻抗的灵敏度计算公式:

式中,SaSs分别为蒸发对空气动力和气孔阻抗的灵敏度;为标准化的蒸发值;为标准化的平衡蒸发值;a为标准化的潜在蒸发值。

 

参考文献

陈发祖:蒸发的抗阻模型讨论。地理研究,1991,10(2)

 

How to Cite

《资源环境数学模型手册》 (2018). 蒸发的抗阻模型及气孔阻抗计算公式, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/8f5dc54b-3819-4ca9-bc6f-525671ceca17
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Last modifier : 
zhengzhong
Last modify time : 
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Contributor

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

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Last modifier : 
zhengzhong
Last modify time : 
2020-11-14
Modify times : 
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