Assessment Of Sustainable Land Use In Guanghan Ctiy

Sustainable utilization of land resource has already became key contents and essential basis of human society's sustainable development, studies ranging from different scales to different places are drawing more and more attention in the world. According to the rules of sustainable land utilization, this article take Guanghan city which is the economic-developed county in Sichuan province as an example. Concluding the concept and means of sustainable development, this article chooses thirty-four appraisal indexes and establishes the drafting series indexes of land sustainable evaluation from standard layers of resource, environment, economy and society. Then use the single correlation means to choose the final index of land sustainable evaluation appraisal. Thirdly, the appraisal result is made according to the comprehensive degree of sustainable utilization of land resource in Guanghan city from 1996 to 2005 by the means of linearity appraisal model. At last, according to the result of appraising, this paper diagnose the adverse and positive factors and come up with some advice for the problem. The main conclusions of this study are as follows:(1) By the means of single correlation, seventeen indexes has been chose from the drafting series indexes of land sustainable utilization evaluation. These indexes reflect the character of sustainable land utilization from different profile, furthermore, they are all quantity indexes and easy to get.(2) The degree of sustainable utilization of land resource in Guanghan city from 1996 to 2005 is getting more and more high from 0.6005 to 0.8035. From basic sustainable utilization to middle sustainable utilization. The degree of resource, environment, economy and society are also getting higher, and the degree of economy is the higher than others.(3) According to analyzing the influence factors of sustainable land utilization of Guanghan city, the income rate of city and county, the potential land producing ability and forest overlay rate are the main adverse indexes, and the degree is getting higher and higher. The cultivated land per person and consistency of road are the positive factorS. With the developing economy of Guanghan city, the indexes in standard layer of economy are the main positive factors to sustainable land utilization, and the effect is obvious.