地耳和地衣的化学元素组成特点及其与放牧率的关系
李香真, 牛海山, 孙铁军, 陈佐忠
Element Composition of Nostoc commune and Xanthoparmelia camtschadalis under Grazing Pasture and Their Relations with Stocking Rates
Li Xiangzhen, Niu Haishan, Sun Tiejun, Chen Zuozhong
. 1999, (3): 252 -257 .  DOI: 10.11733/j.issn.1007-0435.1999.03.012