【摘要】 基于Landsat MSS和TM影像数据,应用RS、GIS软件和景观生态学方法,以拜泉县为例分析了1979～1990年、1990～2001年两个时段土地利用及景观格局的动态变化情况。结果表明,拜泉县以农田和建设用地为主,林地大幅度增加,各土地利用类型相互转移,从1979年到2001年,农田面积减少了15.53%,林地、水体、草地、建设用地面积分别增加了710.71%、66.44%、13.73%和133.69%,土地利用率逐渐提高。运用分维数、优势度指数、破碎度指数、多样性指数等景观指数分析了拜泉县景观格局变化过程,斑块数总体呈增加趋势,表明景观整体上破碎化程度增加,这是因为人类对生态环境的干扰越来越大。更多还原

【Abstract】 Based on Landsat MSS and TM images,dynamic changes of the land use and the landscape between 1979-1990 and 1990-2001 were analyzed by applying RS and GIS softwares and the method of land-scape pattern.The results indicated that the land use types transfered from one to another,between 1979-2001,the farm land area reduced 15.53%,the areas of wood land,water body,grass and construction land were relatively increased 710.71%,66.44%,13.73%,133.69%,land use ratio gradually increased.The process of the landscape change of Baiquan county were analyzed by applying fractal dimension,dominance index,fragmenta-tion index and diversity index.The patch number trend was increasing,which indicated that the fragmentation degree of landscape was increased due to the disturb from human action to the eco-environment.更多还原