水土保持研究2018，Vol.25Issue(3)：122-127,6.
3种干旱指数在宁夏中部干旱带的适用性分析
Analysis of Applicability of Three Drought Indices in the Arid Area of Central Ningxia
摘要
Abstract
Based on the monthly meteorological data of four meteorological stations from 1960 to 2015 of the arid area of central Ningxia,indices of SPI,SPEI,and K of spring,summer,autumn,winter and crop growing season were calculated,and the assessment results of the three drought indices were compared.The results showed that:(1) three drought indices had good correlation each other at all time scales except winter and the correlations between SPI and SPEI,between SPEI and K index were poor in winter;(2) indices of SPEI and K were relatively similar in identification of drought in spring,summer and crop growing season,and K index had the highest degree of drought assessment in autumn and winter,followed by indices of SPI and SPEI;(3) M-K trend analysis results from the three drought indices were similar,which can indicate the trend of drought in the arid area of central Ningxia;(4) K index was more effective than SPI and SPEI,and its assessment results were basically consistent with historical drought facts.关键词
干旱指数/宁夏中部干旱带/适用性/SPI指数/SPEI指数/K指数Key words
drought index/the arid area in central Ningxia/applicability/SPI/SPEI/K index分类
天文与地球科学引用本文复制引用
关静,梁川,赵璐,崔宁博,王春懿..3种干旱指数在宁夏中部干旱带的适用性分析[J].水土保持研究,2018,25(3):122-127,6.基金项目
“十三五”国家重点研发计划项目“西北典型农区高效节水灌溉技术与集成应用”(2016YFC0400206-03) （2016YFC0400206-03）
