Estimating medicinal yield of Bupleurum chinense in Beijing Region based on field vegetation survey with GIS approach
JIANG Yuan, REN Fei-feng, XIAO Yan-qing, ZHANG Wen-tao, LI Yu-ping, XIONG Xing
JOURNAL OF NATURAL RESOURCES . 2009, (6): 1080 -1089 .  DOI: 10.11849/zrzyxb.2009.06.015