Sustainable Use Of Land Resource: A Posotive Study On The Yangtze River Delta

The Yangtze River Delta is lack of land resource, but it is densely populated. The limited number of land source and land pollution have restricted economy sustainably develop. Unsustainable using of land resource threatens sustainable development of economy. From the point of views of land quatity and land quality, this article analyzes levels of sustainable land use of five major cities in the Yangtze River Delta: Shanghai, Hangzhou, Ningbo, Nanjing, Suzhou. Using fuzzy mathematics and correlation analysis, this article gains the values of comprehensive indicators and environmental indicators. Using case study, this article introduce land pollution in Shanghai, Zhejiang and Jiangsu. The conclusions are as follows. The Yangtze River Delta is seriously losing arable land resource and this certainly causes unsustainable land use in quantity; With regional industrialization, urbanization and intensification of agricultural production to be enhanced, land pollution is intensified. The quality of the land is continually declining and this fact is more sharp than the fact that continuing decline in land resource.There are many factors intertwinedly affect sustainable use of land resources in Yangtze River Delta. Such the structure of land use disorders, the degree of intensive land use is not high, current appraisal system of official performance deficiencies, copetitions between regional governments are furious, and so on. These infections affect not only in quantity, but also in the quality of land resource.Land resource becomes increasingly scarce, and it will restrict sustainable growth of ecnomy. Research shows that "growth drag'' of land resource to Shanghai's economy is about 0.793 percent.