摘要
Abstract
;To clarify the issues of overlapping and fragmented distribution of natural protected areas in Ningde City and reveal their spatial distribution characteristics.In this paper,the four types of natural protected areas(54 in total)in Ningde City as the research object,employing statistical analysis,spatial overlay analysis,kernel density estimation,geographical concentration index and the Mo-ran's I Index to investigate their spatial distribution patterns and optimization pathways.The results show that:①the main types of nature protected areas are predominantly nature reserves and forest parks,with respective counts of 32 and 16.②The overlapping ar-ea of natural protected areas in Ningde City is 15496.82 hm2,the overlapping types of protected areas are predominantly nature re-serves.③The conservation gap area in Ningde City is 323338.37 hm2.④By region,Shouning County demonstrates the most concen-trated distribution of protected areas(geographical concentration index G=38.1),while Zherong County has the lowest(G=1.59).By type,nature reserves show the highest geographical concentration(G=60.32),whereas ocean parks exhibit the lowest(G=1.59).⑤The overall spatial clustering degree of natural protected areas was moderate(Global Moran's I=0.0839,P＜0.05),ex-hibits a positive spatial auto-correlation with clustering.关键词
自然保护地/空间格局/地理集中指数/分布特征/交叉重叠Key words
natural protected areas/spatial patterns/geographical concentration index/distribution pattern/intersect and overlap分类
林学
