干旱半干旱地区草原灌丛荒漠化及其 生物地球化学循环
金钊,齐玉春,董云社
Shrub Encroachment and Accompanied Changes of Biogeochemistry Cycles in Semiar id and Ar id Gr asslands
JIN Zhao,QI Yuchun,DONG Yunshe
地理科学进展 . 2007, (4): 23 -32 .  DOI: 10.11820/dlkxjz.2007.04.005