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《Journal of Arid Land Resources and Environment》 2015-10
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Drought losses for nearly 60 years in Guizhou based on non-uniform frequency analysis

XU Jianxin;SHEN Dongfang;LEI Hongjun;SHANG Chongju;ZHANG Zezhong;FAN Hua;School of Water Conservancy Engineering,North China University of Water Resources and Electric Power;Guizhou Water Conservation Science and Research Institute;  
In recent years,drought occurred frequently in Guizhou. In order to study drought losses in Guizhou accurately,we presented non- uniform frequency analysis of drought losses based on the principle of non- uniform hydrologic analysis under varying environments to analyze the drought losses data from 1950 to 2011 of Guizhou. The frequency curve showed that the low frequency of extreme drought disaster rate showed a decreasing trend,the high frequency of drought disaster rate showed an increasing trend. To study the rationality of the results,we used non- parametric Mann- Kendall rank test and linear regression equation method to analyze the correlation of the rainfall and drought disaster rate. The results showed that the mutation characteristics of the rainfall was about the same as that of the drought disaster rate,the rainfall was negatively related to drought disaster rate.
【Fund】: 国家自然科学基金(51379014);国家自然科学基金重大研究计划(51190093);; 水利部公益性行业项目(201301039);; 2014年度河南省科技攻关计划项目(142102310290)资助
【CateGory Index】: P426.616
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