YANG Zhao-ping, OU Yang-hua, XU Xing-liang, YANG Wen-bin . Spatial heterogeneity of soil moisture and vegetation coverage of alpine grassland in permafrost area of the Qinghai-Tibet Plateau[J]. JOURNAL OF NATURAL RESOURCES, 2010 , 25(3) : 426 -434 . DOI: 10.11849/zrzyxb.2010.03.008