Abstract:

Irrational exploitation leads to a number of environmental problems,therefore，the feasible development regionalization of land use is important for setting up a rational spatial order of development and protection.This study takes the area along the Yangtze River in Haimen as a case.The comprehensive carrying capacity of comparatively exploitation intensity of every grid units in the region is evaluated by analyzing the elements of regional nature，resources，ecology and economy based on the GIS platform.The region is divided into four parts through the assessment which includes hortative development region，feasible development region，moderate conservation region and preferential conservation region.The results of the evaluation can offer scientific reference value for the arrangement of development sequence and the lead of the spatial distribution.It is indicated that most parts of the hortative development areas are located in the city zone and harbor area，large parts of the feasible development areas in the major centertown and the township of ecumenical towns，the main parts of moderate conservation areas include the high ecological sensitivity zone or common development condition zones,and the areas with a role of ecosystem service belong to the preferential conservation area.At last，the authors propose the suggestion of exploitation intensity and sequence based on the rationalization，which may be used in the town and industry spatial distribution of areas along the Yangtze River.

Key words: regionalization of feasible development, restricted and guiding factors, areas along the Yangtze River, Haimen City