昆明市西山区城市景观格局变化及驱动力分析

Analysis of Urban Landscape Pattern Change and Driving Force in Xishan District of Kunming City

以昆明市西山区为研究对象,选取2002和2017的Landsat TM遥感影像作为数据源,结合定量分析的方法,用多样性指数和优势度指数对昆明市西山区城市景观的变化特征和驱动力进行分析。结果表明:十五年来昆明市西山区城市景观格局发生了较大的改变,其中城市景观类型的变化裸地 】绿化用地 】交通用地 】农业用地 】建设用地 】其他用地 】水体 】林业用地。水体和林业用地的类型变化小,基本保持稳定,裸地用地景观减少,绿化用地、交通用地、建设用地景观类型增加。多样性指数和优势度指数发现昆明市西山区城市景观的类型呈现出一种多样性减少、偏离程度降低的趋势。人口变化、城市规划战略和经济发展是昆明市西山区城市景观格局变化的主要驱动力。

Taking the Xishan District of Kunming as the research object, Landsat TM remote sensing images of 2002 and 2017 were selected as data sources, and combined with quantitative analysis method, the change characteristics and driving forces of urban landscape in Xishan District of Kunming were analyzed by using diversity index and dominance index. The results show that the urban landscape pattern of Xishan District in Kunming City has changed greatly in the past 15 years. Among them, bare land >green land >traffic land >agricultural land >construction land >other land >water body >forestry land. Water body and forestry land types have changed little and basically maintained stability. The landscape of bare land decreased, while the landscape types of greening land, traffic land and construction land increased. Diversity index and dominance index found that the landscape types of Xishan city in Kunming showed a trend of decreasing diversity and deviation. Population change, urban planning strategy and economic development change are the main driving forces of urban landscape pattern change in Xishan District.