西北干旱区黑河下游植被覆盖变化研究综述
贾艳红,赵传燕,南忠仁
Review of Study on Vegetation Cover Change in the Lower Reaches of Heihe River in Nor thwest Ar id Ar ea
JIA Yanhong,ZHAO Chuanyan,NAN Zhongren
地理科学进展 . 2007, (4): 64 -74 .  DOI: 10.11820/dlkxjz.2007.04.009