[1]Key Laboratory of Remote Sensing of Gansu Province;
Heihe Remote Sensing Experimental Research Station;
Northwest Institute of Eco-Environment and Resources;
Chinese Academy of Sciences;
Lanzhou;
Gansu 730000;
China;
[3]University of Chinese Academy of Sciences;
Beijing 100049;
China;
[2]School of Earth and Environmental Sciences;
The University of Queensland;
Brisbane 4072;
Australia;
ecosystem services; arid region; water resources; land-use planning; remote sensing;