Spatial features of input-output of mountainous farmland system aided by GIS—A case study from Wugou Village,Henan Province

Based on the investigation on the energy attributions and the input-output characters of 482 farmland systems in Wugou Village,the paper points out that the farmlands with higher energy input and output mainly lie around residential area and along the Wugou Road.The system of drought flat farmland is higher in input,output and ratios of output to input,which are related with the farmland system input and output levels.The ratios of output to input of unit area of different crops rank as follow:soybean＜wheat＜corn.