作者单位:Dao-Yi Gong,Yuanxi Guo,Rui Mao(State Key Laboratory of Earth Surface Processes and Resource Ecology(ESPRE),Beijing Normal University,Beijing 100875,China)Wenshan Wang(Department of Earth System Science,University of California,Irvine CA 92697 USA)Yun Qian(Pacific Northwest National Laboratory,Richland,WA 99352,USA)Wenbing Bai(Civil and Environmental Engineering,Carnegie Mellon University,Pittsburgh,PA 15213,USA)