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Remote Sensing Technology and Application  2014, Vol. 29 Issue (6): 949-953    DOI: 10.11873/j.issn.1004-0323.2014.6.0949
    
Application Research of Perpendicular Drought Index for Spring Drought Monitoring in High and Cold Agricultural Area
Chen Guoxi,Zhou Bingrong,Hu Aijun
(Qinghai Institute of Meteorological Sciences,Xi ning 810001,China)
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Abstract  

Drought,especially spring drought,prevails almost every year in the eastern region of Qinghai.It had a great impact on agriculture,while lacking of an effective remote sensing monitoring method.The values of Perpendicular Drought Index (PDI) of the agricultural meteorological stations,which were extracted from HJ\|CCD,fitted relationship among soil moisture of different depth,their unbiased correlation coefficients(R) were all above 0.7.Especially,the relationship at the depth of 0~20 cm(y=-489.00x+188.78)was best(R=0.7985).And it was used for the soil moisture inversion on the fixed period of Huangyuan agricultural meteorological station,the result showed that the time series trend of soil moisture from remote sensing inversion and manual measurement were similar.And this method was used to monitor the Spring Drought on Xining agricultural region of Qinghai in 2013.It showed that the drought regions were mainly distributed in the river valley of Datong and Huangshui,the drought of Huangyuan was the most serious,it was comparatively unanimous to develop with the real drought.

Key words:  Perpendicular Drought Index(PDI)      Spring drought      Soil line      Remote sensing monitoring      HJ satellite     
Received:  13 August 2013      Published:  15 January 2015
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Chen Guoxi
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Hu Aijun

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Chen Guoxi,Zhou Bingrong,Hu Aijun. Application Research of Perpendicular Drought Index for Spring Drought Monitoring in High and Cold Agricultural Area. Remote Sensing Technology and Application, 2014, 29(6): 949-953.

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http://www.rsta.ac.cn/EN/10.11873/j.issn.1004-0323.2014.6.0949     OR     http://www.rsta.ac.cn/EN/Y2014/V29/I6/949

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