中国农业机械化科学研究院集团有限公司 主管

北京卓众出版有限公司 主办

重庆市不同喀斯特地区聚落分布变化规律

Change Rules of Rural Settlements Distribution in Different Karst Regions in Chongqing Municipality

  • 摘要: 为揭示喀斯特地区聚落分布与农用地的关系,以重庆市喀斯特地区3个典型的县为研究对象,运用GIS缓冲分析法和景观指数分析法,分析了不同地类不同缓冲距内的聚落分布规律。结果表明:①不同景观斑块在同一地貌区内的格局特征不同,同一景观斑块在不同地貌区的空间分布格局也不同;②聚落景观格局呈现出用地比例偏少、平均斑块面积小、面积加权平均斑块分维数小和分布稀疏零散等特点;③聚落分布随地貌、地类以及缓冲区的差异而不同。水资源、地貌和地类是影响喀斯特地区聚落分布最重要的因素,且聚落分布和农用地分布呈现出较强的空间趋同性。

     

    Abstract: To explore the relationship between rural settlement distribution and agricultural land in karst region,by three typical karst area counties in Chongqing as the research object,the difference of the settlement distribution of different land types in different buffer distance on the GIS buffer analysis and landscape indices analysis were analyzed.The results showed that there had existed difference on landscape pattern characteristics of the different landscape patches in the same geomorpy,and the same landscape plaque also had the different spatial distribution patterns in the different geomorphologic landscape.The settlement landscape pattern had the proportion that covering land was less,the average patch area was small,the weighted average patch fractal dimension were small and distributed sparsely scattered,etc.The distribution characteristics of settlement were different because of the land types or the physiognomy sections.The landform and land types and the water were important factors that affect the settlement distribution difference,and there existed space convergence between agricultural land distributions and the rural settlements distribution.

     

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