3.2 Data Sets
The DEM data with a spatial resolution of 90 m was provided by the International Scientific and Technical Data Mirror Site, Computer Network Information Center, Chinese Academy of Sciences (http://datamirror.csdb.cn). The global 1–km land cover classification dataset was obtained from the University of Maryland (Hansen et al., 2000). The classification of soil texture (at a resolution of 1 km) based on the Harmonized World Soil Database (HWSD) was provided by the Food and Agriculture Organization of the United Nations and the International Institute for Applied Systems Analysis. Daily precipitation data from 24 rainfall stations and daily discharge data from the Hengshi hydrological station (Figure 2) were provided by the Hydrology Bureau of Guangdong Province, China. Daily maximum and minimum temperature data from 4 meteorological stations were provided by Meteorological Data Sharing Service System, National Meteorological Information Center, China Meteorological Administration (http://cdc.cma.gov.cn/home.do). The data sets from all the stations spanned the period from 1970 to 2000.