EN中文
The Temporal and Spatial Distribution of Seasonal Dry- Wet Changes over the Northwestern China: Based on PDSI
ZHANG Yong, CHEN Fahu, GOU Xiaohua, JIN Linya, TIAN Qinhua,WANG Yousheng, PENG Jianfeng
Acta Geographica Sinica . 2007, (11): 1142 -1152 .  DOI: 10.11821/xb200711003