SPATIAL DIFFERENCE ANALYSIS OF THE RURAL RESIDENTS' NET-NCOME ALONG THE BOHAI RIM IN CHINA

Based on GIS and spatial analysis,this paper analyzes the spatial difference and development trend of rural residents' net-income along the Bohai rim at county level.Results reveal that there is extreme disparity of the rural residents' net-income at county level,and underdeveloped areas are the main forms;underdeveloped areas and poverty areas are agglomerating in the surrounding areas of Beijing and Tientsin;core-periphery effect is significant.The distribution pattern has not changed much between 1980 and 2007,but absolute difference has been steadily expanding while relative difference has been reduced fluctuately;the general structure of rural residents' net-income at county level is transformed from pyramid-type to spindle-type;there were significantly spatial autocorrelation of rural residents' net-income,and the relativity increased.Among the 6 types of units categorized by the level of rural residents' net-income in 1996 and increase speed of rural residents' net-income,those whose net income was less developed and whose increase speed of net-income was slower are almost distributed in mountain and hilly areas,and for its fragile ecological environment,more attention should be paid.