1. College of Urban and Environmental Science and MOE Laboratory for Earth Surface Processes; Peking University; Beijing; 100871; China
2. Earth and Environmental Sciences Division; Los Alamos National Laboratory; MS-J495; Los Alamos; NM; 87545; USA
3. US Geological Survey; Jemez Mountains Field Station; Fort Collins Science Center; Los Alamos; NM; 87544; USA
4. Institute of Geographical Sciences and Natural Resources Research; Chinese Academy of Sciences; Beijing; 100101; China
5. Institute of General and Experimental Biology; Siberian Branch; Russian Academy of Sciences; Ulan Ude; 670047; Russia
6. Institute of Tibetan Plateau Research; Chinese Academy of Sciences; Beijing; 100085; China