地理学报
Topographic Differentiation Simulation of Crop Yield and Soil and Water Loss on the Loess Plateau
XU Yong, YANG Bo, LIU Guobin, LIU Puling
Acta Geographica Sinica . 2008, (11): 1218 -1226 .  DOI: 10.11821/xb200811011