.Xinjiang Institute of Ecology and Geography;Chinese Academy of Sciences;Urumqi 00;China;.Cele National Station of Observation &Research for Desert-Grassland Ecosystem;Cele 00;Xinjiang;China;.College of Forestry;Xinjiang Agricultural University;Urumqi 00;China;.The Forestry Bureau of Qitai County;Qitai 00;Xinjiang;China