土壤热交换量计算公式

土壤热交换量计算公式

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Initial contribute: 2018-12-04

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岳天祥编著
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土壤热交换量计算公式

(1) 土壤中热能量的一般表示式:

式中,为土壤导热率;C为土壤比热;为土壤密度;K为土壤导温系数;Z为从地表面指向下方的深度;T为土壤温度。

(2) 土壤热交换的计算公式:

式中,t为时间间隔;为土壤容积热容量;K为土壤导温系数;为决定于时间间隔的土壤各深度温度分布特征函数;为该时间段1020cm深度的土壤温度变化特征函数。

计算土壤热交换量比较简明精确的方法还有图解积分法,其基本思路:若土壤中不考虑水平方向的热量交换,则地面与下层土壤间的热交换量等于土壤柱中热含量的变化,即:

式中,为土壤容积热容量;为土壤温度变化所波及的深度;分别为起始时间和终止时间时深度Z处的土壤温度。

参考文献

高国栋,陆渝蓉:我国地表面与下层土壤间热交换量的计算与分布

 

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《资源环境数学模型手册》 (2018). 土壤热交换量计算公式, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/246d3267-1f61-4b06-a0fa-2838dbdf48c7
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Last modifier
zhengzhong
Last modify time
2020-10-31
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Contributor(s)

Initial contribute : 2018-12-04

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Authorship

:  
岳天祥编著
:  
yue@lreis.ac.cn
:  
View
Is authorship not correct? Feed back

History

Last modifier
zhengzhong
Last modify time
2020-10-31
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