生态系统模型中增长增效器函数

生态系统模型中增长增效器函数

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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-perspectiveGeostatistical analysis
Method-focused categoriesProcess-perspectivePhysical process calculation
Method-focused categoriesProcess-perspectiveChemical process calculation
Method-focused categoriesProcess-perspectiveBiological process calculation

Model Description

Chinese {{currentDetailLanguage}} Chinese

生态系统模型中增长增效器函数

 

(1)  光的增效器():

 

 

式中,是光的相对量;是参数。

 

(2)  温度的增效器():

 

 

式中,是温度总和的最小值(单位:);是温度总和的最大值(单位:),它使特殊树种的生存成为可能;是温度总和(单位:)。

 

(3)  土壤水的增效器():

 

 

式中,是生长季节的总天数;是要求物种在枯萎点以下忍受土壤湿气的生长季节的最大比例(生长季节的总天数之外的);是生长季节总天数中旱天数所占的百分比。

 

(4)  土壤氮的增效器():

 

 

式中,是叶片和松针中氮的浓度;是参数。

 

如果,木质化过程将会终止。并且有:

 

 

 

式中,是物种基因类型值;是第天中平均大气温度;是从木质化过程开始以来的天数。木质化阶段之后,树木进入休息阶段。

 

如果,,休息阶段中止,是休息阶段开始以来的天数,并且有:

 

  

 

 

 

 

 

式中,是参数;是一个物种基因类型值。休息阶段结束后,树木进入了静止阶段。

 

如果,静止阶段终止,是从静止阶段开始以来的天数,并且有:

 

  

 

 

 

 

式中,是参数,是一个物种基因类型值。静止阶段结束后,树木进入了活跃阶段。

 

(5)  霜冻的损害:

 

在第天中霜冻引起的相对增长量减少的后果作为耐霜力和每日最低气温的一个函数被计算:

 

 

 

 

式中,是决定温度范围宽度的斜率参数,在这个温度范围内霜冻损害由可以忽略不计开始增大。

 

参考文献

Kellomäki SHänninen HKolström M:北温带北部森林地区气候变暖对欧洲赤松林的损害计算。Ecological Applications1995,51

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How to Cite

《资源环境数学模型手册》 (2018). 生态系统模型中增长增效器函数, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/406c91ba-efbe-4ef8-9f59-f50083c5000d
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Last modifier : 
Zhen Qian
Last modify time : 
2020-12-30
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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 : 
Zhen Qian
Last modify time : 
2020-12-30
Modify times : 
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