农业旱涝指标的计算模型

农业旱涝指标的计算模型

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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 categoriesHuman-perspectiveEconomic activities

Model Description

Chinese {{currentDetailLanguage}} Chinese

农业旱涝指标的计算模型

(1)水分平衡公式:

      

式中,为某一时期开始和终止时的土壤水分;R为降水量;Q为潜水与深层土壤水对作物根系层的补给量;P为地表径流;E为土壤增蒸发;T为作物蒸腾;U为对地下水的入渗补给。

(2)旱涝指标公式:

      

式中,A为可利用水;W1m土层原有易效水;R为某生长季节降水量;σ为周期的径流系数,S为同期的渗透系数;Q为深层土壤和地下潜水供给的水分。

                 K=K/A

式中,K为农业旱涝指标;A为同期作物需水量。

(3)旱涝简化公式:

1)     春季(3~5月或4~5月):

平原:

       

坝上――冀北山地冀桑洋河盆地:

       

其余山地:

        

式中,N为可利用是A的同期作物需水量。

2)     初夏(6月中~7月上)和伏夏(7月中~8月上):

平原;

坝上――冀北山地冀桑洋河盆地

         

其余山地

        

3)     秋季(8月中~9月)

平原:

    

坝上――冀北山地冀桑洋河盆地:

    

其余山地:

     

式中,N为可利用水A的同期作物需水量。

参考文献:

    肖嗣荣,郭康:关于农业旱涝指标的研究。地理研究,198542

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How to Cite

《资源环境数学模型手册》 (2018). 农业旱涝指标的计算模型, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/a27d49ac-e453-4846-b329-5cba748cfd3c
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Last modifier : 
Anxun Ren
Last modify time : 
2020-12-31
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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 : 
Anxun Ren
Last modify time : 
2020-12-31
Modify times : 
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