1996年-2008年昆明城市建成区景观格局梯度动态变化研究

以1996年和2008年的昆明城市土地利用图为数据源，运用景观格局指数对城市景观梯度格局进行定量分析和比较，研究表明城市景观格局梯度变化与城市建设开发强度密切相关，1996年环城路内是城市建设的核心区域，一、二环间开发建设的力度较小，二环以外城市建设用地较为分散；2008年一、二环之间的开发力度为最大，一、二环间的景观格局梯度变化幅度最大，表明此时期昆明城市空间扩张进入快速的“外延式”扩张阶段。快速城市化是推动昆明市景观格局变化的主要驱动力，政策性因素导致城市景观格局方向性变化。

Study on the Dynamic Gradient Change of the Urban Landscape of Constructed Region of the Kunming city in 1996 and 2008

Based on urban land-use map in 1996 and 2008,with the landscape analysis software(FRAGSTATS 3.3),the landscape gradient patterns of construction lands of Kunming city are analyzed.Result shows that urban landscape gradient pattern changes are closely related to the urban construction development intensity.In 1996,urban area in the f irst-ring road is the core area of construction,and construction of the area between the f irst-ring road and second-ring road is relatively less.The construction lands outside the second-ring road are scattered.In 2008,the construction degree of the area between the first-ring road and second-ring road is the most intensive,and landscape gradient pattern of that area is the most severe in the whole city,which indicates the extension of the Kunming urban space is rapidly.The study shows that rapid urbanism is the main driving mechanism of the changes of the Kunming city landscape pattern.Policies factors lead to the directivity change of the urban landscape.