鲁东南地区土地利用动态变化及其主要驱动因素分析

以临沂市1991、1996、2000、2005年的土地利用类型变更调查数据为基础，利用土地利用变化率、单一土地利用动态度、综合土地利用动态度、土地利用程度综合指数等模型，对临沂市14a间土地利用的动态变化及驱动因素进行分析。研究结果表明：1991～2005年间临沂市农业用地面积增加，农业用地结构发生变化，园地变化速度最快，与1991年相比，增长率达48．35％，林地有所增加，建设用地面积一直呈现增长态势，居民点与工矿用地1996～2000年间动态变化率相对较小；1991、1996、2000、2005年临沂市土地利用程度综合指数分别为267．86、268．89、270．47、276．61，土地呈现高度开发利用状态。政策因素、经济和交通的快速发展、人口增长都是促进土地利用变化的主要驱动因素。图4，表3，参15。

Analysis of Land-use Dynamic Change and its Main Driving Factors in Southeast-Lu Region

Using the models of the land-use change rate, the single land-use dynamic degree, the comprehensive land-use dynamic degree and the composite index of land-use degree, this article analysed the land-nse change and its driving factors of Linyi city during the 14 years on the basis of the data of land-use type change of the ctiy in 1991,1996,2000 and 2005. The findings indicate ： agricultural land area increased; the agricultural land structure changed; the change in garden land was the biggest, and compared with 1991 the growth rate reached to 48.35%; there was an increase in forest land; construction land area has been showing growth; the dydamic change rate of residential and industrial mining land was relatively small between 1996 and 2000; in 1991,1996,2000 and 2005, the composite index of land-use degree were 267.86, 268.89,270.47,276.61 in Linyi City, respectively, which showed a high degree of land development and utilization. The policy, the fast development of economy and transportation, the population growth were all the main driving factors for the land-nse change.