关键词: 土地利用类型, 转换态势, 驱动机制, 东南沿海地区

Abstract: The southeast coastal area of China has played a more and more importa nt role in promoting China's economy and increasing its international competitiv eness since the reforming and opening up.Land resources have made remarkable con tribution to the development of region's economy.In southeast coastal area of Ch ina,the utilization ratio of land reaches 89.8%,much higher than the national av erage level of 74.1%. Simultaneously, due to the intense exploi,tation,especiall y the unreasonable land use,the pattern of land cover in this region has markedl y changed.Based on the analysis of the features and problems of land use change in the southeast coastal area in the 1990s,by introducing the following judge in dexes such as LDD,LAD and LCD,the degree,spatial,temporal heterogeneity and driv ing mechanism of regional land use conversion are identified.According to the re search, the arable land of this area decreased 122.2×10⁴hm² contrasting to an i ncrease of 85.9×10⁴hm² of construction land in the recent 10 years.The developm ent level and structural alternation of the regional economy and society have pr ofound effect on the situation of land use type conversion.The consummation of m arket economic system and institutional innovation of individual economy speed u p the conversion of land use type in the southeast coastal area.The increase of population and the technical advance,ment are the primary driving forces of land use type conversion,and by the way of accelerating the construction of all kind s of industrial gardens (including developing area) and central town and village s,the two forces prolong their effects on the whole process of land use conversi on. Therefore,it is very necessary to regulate the hot economic investments and construction of the development districts by the state government.And the conver sion from arable land to built,up area ought to be restricted in order to create a fine condition of sustainable land use for enhancing social and economic deve lopment rapidly in the southeast coastal area of China.

Key words: land use type, conversion trend, driving mechanism, southeast coastal area