近 30 年来黄河上游荒漠化时空演变及成因研究
李任时, 邵治涛, 张红红, 安志宏
Analysis on time-space evolution of desertification and its causes in Yellow River during recent 30 years
LI Ren-Shi, SHAO Zhi-Tao, ZHANG Hong-Hong, AN Zhi-Hong
世界地质 . 2014, (2): 494 -503 .