迪庆州土地利用/土地覆盖及景观格局分析

Research in Land Use/Land Cover and Landscape Pattern in Diqing Prefecture

近些年来,迪庆州随着土地利用/土地覆盖的变化演进,当地的居民生存安全和生物多样性保护都受到不同程度的威胁。为达到既保护生物多样性又促进当地居民发展的目的,寻找一个合理的土地利用就成为所关心的问题,而土地利用/土地覆盖的研究即是解决该问题的首要基本工作。通过对TM影像的解译,本文得到以下结论:迪庆州的土地利用/土地覆盖以有林地和城镇用地为主,但近年来林地大面积减少并且林地斑块破碎化程度有所增加。而草地的面积较小。由于人为活动的影响,景观斑块大,破碎程度高。

In recent years, with the evolution of land use/land cover change, survival of the local population and biodiversity protection in Diqing Prefecture were threatened. In order to achieve both biodiversity protection and promotion of development of local residents, it became an important problem that looked for a reasonable method of land utilization, and land use/land cover study was the primary work to solve the problem. By the interpretation of TM imagery, the conclusion could be drawn as follows. Land use/land cover of the Diqing Prefecture was dominated by forested land and urban land. But in recent years, many forest land disappeared and forest land patches fragmentation increased, and the area of grass land was small. For the influence of human activities, the number of Landscape patches was big, and degree of fragmentation was high.