县域土地利用景观格局变化研究——以陇县为例

依据景观生态学基本原理,应用spss软件、arcgis软件和景观格局分析软件Fragstates对陇县1989～2009年土地利用景观格局的变化和空间分布进行研究,并根据各景观类型的景观格局指数计算结果对该区土地利用景观格局进行分析评价。结果表明,陇县主要景观类型为林地、耕地和草地,林地和建设用地保持稳定而迅速增长,草地和未利用地呈现逐渐减少趋势;人类活动使水域、未利用地更为分散,建设用地、园地更为集中;景观多样性降低,破碎化程度减缓,斑块形状的复杂程度并未发生大幅度的变化,人类活动对景观格局的影响保持在一定范围内。

Study on Land Used and Landscape Pattern Changes in Some Counties

According to the basic principle of landscape ecology,using the software of SPSS,ARCGIS and FRAGSTATES,the article studies land uses change and the spatial distribution of the landscape pattern during 1989 to 2009,meanwhile,analyzed and evaluated the landscape patterns Long County based on the calculated results of index of land uses.Results show that the main landscape types are woodland,arable land and grassland,woodlands and construction land remain stable and rapid growth,grassland and unused land show a gradually decreasing trend.Human activity makes waters and unused land more dispersed,construction land and garden more centralized.The landscape diversity is reduced,fragmentation degree slowed,the complexity of the shape of patch not greatly changes.The influence of the human activities on landscape structure keep within the certain scope.