平昌县土地利用动态变化分析

土地利用变化研究是生态环境变化研究的重要基础，也是规范人类行为的科学决策依据。随着人口的持续增长和社会经济的快速发展，平昌县土地利用发生了较大的变化。本文以平昌县2006~2010年土地利用统计资料为依据，利用土地利用动态度模型、土地利用程度模型、区域差异模型，对该县2006~2010年的土地利用动态变化状况进行了分析。分析结果表明：平昌县耕地、园地、林地、城乡建设用地、交通水利用地面积在增加，其他农用地、水域、自然保留地在减少；自然保留地和林地面积变化幅度相当大，变化面积分别为-2005.92hm2、937.96hm2；土地利用变化速度较快，年变化率达0.53%；土地利用程度较高，土地利用综合指数达245.18，土地利用处于发展时期；各乡镇土地利用变化区域差异显著。

A Study of Land Use Dynamic Change in Pingchang County

Research on land use change is an important basis for the ecological environment change research, scientific decision-making is to regulate human behavior. With the steady growth of population and the rapid development of social economy, Pingchang County has taken greater changes place in land use. Taking Pingchang County, as an example, this paper analyzes the temporal and spatial characteristics of land use dynamic change according to the data from 2006 to 2010 and utilizes land use dynamics model, land use level model,regional differences model, arriving at the following conclusions：（1）Farmland, landscape, forest land, urban and rural buildings,traffic and water conservancy lands increased, while other agricultural land, water land, nature reserve land reduced; the area of reserve land and forest land change greatly;（2）in the 5-year period,land use change was very fast, the synthetic dynamic degree of land use in Pingchang County was 0.53% per year;（3） the land use in Pingchang County was in a period of development, the land use intensity was relatively high, and change of township land was significant.