Exploration of Eco-environment Range in the Source Regions of the Yangtze and Yellow Rivers
DING Yongjian, YANG Jianping, LIU Shiyin, CHEN Rensheng, WANG Genxu, SHEN Yongping, WANG Jian, XIE Changwei, ZHANG Shiqiang
Acta Geographica Sinica . 2003, (4): 519 -526 .  DOI: 10.11821/xb200304005