Research Article

Land Cover Mapping Based on Multisource Spatial Data Mining Approach for Climate Simulation: A Case Study in the Farming-Pastoral Ecotone of North China

Table 3

The attribute gain ratio value for constructing decision tree.

NameGain ratioRankDescription

X0.038Rectangular coordination of longitude
Y0.222Rectangular coordination of latitude
PA0.1260.1 mm annual precipitation
TA0.2030.1°C annual accumulated temperature
DEM0.154Elevation
LFM0.117Landform type
NDVI-30.222Normalized differential vegetation index in March
NDVI-120.271Normalized differential vegetation index in December
NPP0.145(g C/m2/year) net primary productivity