西南山地景观破碎化与城镇化及社会经济发展水平的关系研究——以重庆市渝北区为例

城市化进程中的景观破碎问题越来越受到人们的关注，景观破碎度作为衡量城市发展合理性的定量化指标，其应用越来越广泛。在重庆市渝北区，选取4个能够代表景观破碎化的指数，采用移动窗口法、梯度分析法、相关性分析及回归分析法，对景观破碎化空间格局和内部水平差异进行了研究，分析了景观破碎格局下的城镇化特征及其与社会经济发展水平之间的关系。结果表明：渝北区建设用地和林地的景观破碎化程度明显低于其他乡镇低海拔单元，距离城市中心越远，景观破碎化程度越高，在城市边缘达到峰值后开始下降。人口密度是景观破碎化程度的直接影响因素，经济的发展对景观破碎化程度又产生间接影响。研究有助于揭示西南山地地区内部空间格局的演变特征，为该类地区生物多样性保护、绿地廊道维护和生态文明城市建设提供理论依据

Relationships Between Spatial Pattern of Landscape Fragmentation and Urbanization and Socio-Economic Developmental Level in Southwest Mountainous Region: A Case Study of Yubei District in Chongqing

The landscape fragmentation in urbanization has attracted considerable concern in recent years.Landscape fragmentation index as a quantitatively measurement for the reasonability of urban development has been widely used in researches.This paper selected four kinds of representative landscape fragmentation index in Yubei district of Chongqing,then analyzed the spatial pattern and internal differences of landscape fragmentation,and researched the relationships between landscape fragmentation and urbanization and the social-economic development level by the moving window method,gradient method,correlation and regression analysis.Results show that urban and forest landscape fragmentation of Yubei district is significantly lower than that in other lower altitude township units,the farther the city is away from the city center,the higher degree of the landscape fragmentation it has,and the numeric value begins to decrease when it comes to the top at the edge of the city.Population density is the direct affecting factor of the degree of landscape fragmentation,while the economic development is the indirect one.This research could contribute to reveal the internal spatial pattern of the evolution characteristics in southwest mountainous area,and also provide the theory basis for the biodiversity conservation,the green corridor maintaining and the construction of ecological civilization city.