麦田能量转化和水分传输模型

麦田能量转化和水分传输模型

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contributed at 2018-12-04

Authorship

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

Earth System SubjectEarth Surface SystemAnthroposphere
Geography SubjectHuman GeographyAgricultural Geography

Detailed Description

麦田能量转化和水分传输模型

(1) 波文比β的计算:

    

式中,H为显热通量;LE为潜热通量;Δ为饱和水汽压-温度曲线斜率;γ为干湿常数;为两个高度间干球温度差;为两个高度间的湿球温度差。

(2) 潜热LE和感热H的计算:

            

式中,Rn为净辐射;G为土壤热通量。

(3) 空气动力学阻力和表面阻力的计算:

               

式中,U为风速;u为摩擦速度。

                       

式中,ρ为空气密度,Cp为空气定压比热;D为饱和水汽压差。

      如果土壤-作物系统无水分胁迫,=0,则:

                      

                      

参考文献:

    莫兴国,刘苏侠:麦田能量转化和水分传输特征。地理学报,1997,521

How to cite

《资源环境数学模型手册》 (2018). 麦田能量转化和水分传输模型, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/be1fb0c2-c4de-40ca-ae4b-0131d784521a
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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

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