基于SPEI的西南地区近53 a干旱时空特征分析
	
	
		王东, 张勃, 安美玲, 张调风, 季定民, 任培贵
	
	
	
		Temporal and Spatial Distributions of Drought in Southwest China over the Past 53 years Based on Standardized Precipitation Evapotranspiration Index
	
	
		WANG Dong, ZHANG Bo, AN Mei-ling, ZHANG Tiao-feng, JI Ding-min, REN Pei-gui
	
	
	
	自然资源学报
	. 
	
	2014, (6): 1003
	
	-1016
	
	
	. 
	
	DOI: 10.11849/zrzyxb.2014.06.009