Research On The Evaluation Of Comprehensive Land Carrying Capacity In Tianfu New District Based On GIS Technology

With the economic growth acceleration of urbanization process and development of industrial diversification in our country,the status that growing shortage of land resource;moreover,With the paroxysmal growth of population and rapid development of industrial modernization,the land resource at the limit edge of it carrying capacity in a short time.Study on the relationship between land comprehensive carrying capacity or economic development or ecological environment or urban system and land resource have important theoretical and practical significance on overall planning of regional land utilization,To adjust industrial structure,enhance the carrying capacity of regional land resource,utilize the limited land resource intensively and efficiently and realizing regional sustainable and healthy development,we have a important support that is study data.Accoded to the resource condition in Shuangliu region and the collected related data,the study made relative analyses and data processed of factors affecting comprehensive carrying capacity of land in Shuangliu region,utilized the space data analysis and processing function by GIS technology,and determined supporting systems that studied the land comprehensive carrying capacity evaluation system according to the attribute of factors and interplay among factors in Shuangliu region.The supporting systems include land carrying capacity system,social economy carrying capacity system and ecology carrying capacity system.selected 20 indicators from each supporting system to form the indicator system studied the land carrying capacity.Though the combined empowerment of analytic hierarchy process(AHP)and entropy method,the paper determined the indicator weight,then selects comprehensive evaluation model data to analyze,processd and calculated the evaluation value of the land comprehensive carrying capacity in study region,drew the research conclusion of land comprehensive carrying capacity,proposed reasonable measures and suggested to enhance the land comprehensive carrying capacity in Shuangliu region and completed the evaluation research on land comprehensive carrying capacity in research region.The result indicated that the average comprehensive carrying capacity is 0.5741 in research region belonged to the medium level of carrying capacity,but the value of the land comprehensive carrying capacity was smaller than other regional in TianFu new area.Hereinto,the comprehensiv-e carrying capacities of Zhonghe subdistrict and Huayang subdistrict were low,and the comprehensive carrying capacities of Wan'an,Baisha,Jiancha,Jitian,Sanxing and Dalin were moderate,had approximated to average land comprehensive carrying capacity level of the overall region;the land comprehensive carrying capacity value of Xining,Zhengxing,Xinglong,Taiping,Hejiang and Yongxing were relative higher.Specificed to the heterogeneous distribution of integrated regional and comprehensive carrying,we should speed up integrating into the economic construction circle of the Tianfu New Area,adjust the industrial structure and arrange overall planning of land utilization rationally.