遵义市自然保护地空间格局特征分析

Analysis on the Spatial Pattern Features of the Nature Protected Areas in Zunyi City

遵义市共有自然保护地64个,总面积46.3万hm^(2),占国土面积的15.34%。本文采用统计分析法、核密度估计法、空间叠置法对全市64个自然保护地的空间分布格局进行分析。结果表明:(1)遵义市自然保护地空间分布密度区呈点状、带状相结合分布的特征。通过核密度法得出,高密度分布区域为绥阳县,核密度均值为35.83;其次为遵义东部(赤水市、习水县);分布密度最低的为北部、西部地区。(2)保护地之间交叉重叠率为28.23%,交叉重叠类型有10类,出现次数最多的重叠类型为自然保护区与风景名胜区、自然保护区与自然保护区;面积最大的交叉类型为自然保护区与风景名胜区。研究结果为厘清现有保护地矛盾、促进资源的合理配置及推进自然保护地高效管理奠定基础。

There are 64 nature protected areas in Zunyi City altogether with a total area of 463000 hm2,accounting for 15.34%of the city land area.In this paper,an analysis was made on the spatial patterns of the 64 nature protected areas in the city with methods of statistical analysis,kernel density estimation and spatial overlay analysis.The results showed that:1.The spatial distribution density region of the city's nature protected areas had features of punctiform and banded combinations.Kernel density estimation showed that the high-density distribution region was Suiyang County with a mean kernel density value of 35.83,followed by eastern Zunyi(Chizhui City and Xishui County),while northern and western Zunyi had the lowest kernel density value.2.The overlapping ratio of the nature protected areas was 28.23%with 10 overlapping types.The most frequent overlapping types were the one between the nature protected area and scenic area and the overlapping between the nature protected areas.The largest-area overlapping type was the one between the nature protected area and scenic area.The study could lay a foundation for identifying present contradictions among nature protected areas and promoting rational allocation of resources and efficient management of nature protected areas.