气候胁迫与草地NDVI时间积分关系的分析模型

气候胁迫与草地NDVI时间积分关系的分析模型

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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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Application-focused categoriesNatural-perspectiveLand regions
Application-focused categoriesNatural-perspectiveAtmospheric regions

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气候胁迫与草地NDVI时间积分关系的分析模型

(1)    为每个两周周期的值从值开始集节末的求和:

式中,i从开始到季节末的第i两周时间段;是归一化植被指数。

(2)    潜在蒸散量()利用Penman方程计算:

式中,是全波段净辐射;G是底层热通量;是风速函数;是液态水的密度;是蒸发潜热;是饱和水蒸气温度曲线在平均空气和表面温度的平均值时的斜率;是湿度计常数;分别是饱和水蒸气与空气实际气压。

(3)    与气候的关系可假设为一个一般性模型;式中表示为一系列气候变量的函数:

式中,T是地表温度和土壤温度;是生长期天数;是降水总量;是潜在蒸散量;是太阳辐射;是空气的相对湿度。

参考文献

 Yang L,WylieB K,Tieszen L L et al:美国北部和中部大平原上气候胁迫与草地的NDVI的时间积分之间关系的分析。Remote Sensing ofEnvironment,199865

 

 

How to Cite

《资源环境数学模型手册》 (2018). 气候胁迫与草地NDVI时间积分关系的分析模型, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/9c1e7495-e7c8-49ff-9a5b-9f6748863fcf
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Last modifier : 
tingxin
Last modify time : 
2020-11-11
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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? Feedback

History

Last modifier : 
tingxin
Last modify time : 
2020-11-11
Modify times : 
View History

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