重庆市主城区城市景观动态的多尺度分析  

Multi-scale Analysis of the Dynamics of Urban Landscape in the Downtown Area of Chongqing

作　　者：熊春妮[1] 魏虹[1] 兰明娟[1] 

机构地区：[1]西南大学生命科学学院

出　　处：《西南大学学报（自然科学版）》2008年第5期128-134,共7页Journal of Southwest University(Natural Science Edition)

基　　金：中国博士后科学基金资助项目(2003033483)

摘　　要：结合TM影像，以GIS技术为支持，对直辖前后重庆市主城区的变化进行研究．将主城区景观中城镇用地、公交建设用地、农村居民点3种景观类型提取出来作为建筑景观，而其他类型作为非建筑景观．利用景观指数，在多尺度下分别对建筑景观与非建筑景观以及主城区景观进行分析、对比．结果表明：主城区景观格局变化不大，而非建筑景观几乎无变化．直辖以来，重庆市主城区建筑景观格局趋向于更简单，均匀，紧凑．主城区景观格局的变化主要是受建筑景观的影响．重庆市主城区的尺度转折点在150～180m．考虑到基础影像的限制，30m是重庆市主城区景观格局分析适合的尺度．但进一步的研究需要更高分辨率的影像．Based on TM images and using GIS, the change of downtown area of Chongqing city in the period from 1995 to 2002 was analyzed. Three patch types, including the urban land use, public facilities and rural residence, were extracted from the landscape map of the downtown area as building landscape. The remaining five patch types were combined as non-building landscape. Landscape indices were used to evaluate the building landscape, non-building landscape and the landscape of downtown area of Chongqing at multi-scales. The results showed that the building landscape grew simpler and more even and compact, and non-building landscape had hardly any change. The downtown area had little change, which was significantly influenced by building landscape. Scale had great effects on analysis of landscape pattern. The transition of scale was in the range of 150 m--180 m in the landscape of the downtown area in Chongqing city. Given the limitation by basic image, 30 m is recommended as a suitable scale for the analysis of the landscape pattern in the downtown area of Chongqing city. Higher resolution of the images is essential for more precise study.

关 键 词：城市化 景观动态 多尺度分析 重庆 

分 类 号：Q149[生物学—生态学]