城市景观干扰的时空分异特征与景观格局指数的相关性研究

Study on the Correlation between Spatiotemporal Differentiation Characteristics of Urban Landscape Interference and Landscape Pattern Index

近年来,厦门市的人口数量呈急剧增长趋势,自然土地资源却相对有限。这一现象导致厦门市面临土地利用压力问题。因此,为计算厦门市的景观干扰程度,本研究使用ArcGIS 10.6软件计算厦门市的景观干扰度数值,分析其在时空尺度上的变化趋势。接着,通过相关性分析揭示了不同景观格局指数与景观干扰度之间的相互作用关系。研究结果表明2000—2020年间:(1)厦门市土地利用的主要转出类型为人造地表。(2)厦门市景观干扰度逐渐增强,极高干扰度级别的面积呈现逐年增高的趋势。(3)厦门市景观干扰度整体上呈现南北高,中间低的趋势。其中,集美区部分区域景观干扰度较强。海沧区、翔安区的景观干扰度较弱。(4)厦门景观干扰性与边缘密度ED、景观形状系数LSI之间有明显的相关性联系,与斑块密度PD、最大斑块系数LPI、香农多样性指数SHDI之间并没有直接关联,与斑块聚合度指数AI之间呈反比的关联联系。本研究结论将为厦门市的自然资源修复工作提供指导意见,并为制定城市生态政策和措施提供参考思路。

In recent years,the population of Xiamen has shown a rapid growth trend,while natural land resources are relatively limited.This phenomenon has led to land use pressure in Xiamen city.Therefore,in order to calculate the degree of landscape interference in Xiamen,this study used ArcGIS 10.6 software to calculate the numerical value of landscape interference in Xiamen and analyze its trend in spatiotemporal scale.Subsequently,the correlation analysis revealed the interactive relationship between different landscape pattern indices and landscape interference.The research results indicate that between 2000 and 2020,(1)the main type of land use transfer in Xiamen City is artificial surface.(2)The landscape interference level in Xiamen is gradually increasing,and the area with extremely high interference levels is showing a trend of increasing year by year.(3)The overall landscape interference level in Xiamen shows a trend of high in the north and south,and low in the middle.Among them,some areas in Jimei District have strong landscape interference.The landscape interference in Haicang District and Xiang an District is relatively weak.(4)There is a clear correlation between the landscape disturbance in Xiamen and the edge density ED and landscape shape coefficient LSI,but there is no direct correlation with patch density PD,maximum patch coefficient LPI,and Shannon diversity index SHDI.There is an inverse correlation with patch aggregation index AI.The conclusion of this study will provide guidance for the restoration of natural resources in Xiamen City,and provide reference ideas for formulating urban ecological policies and measures.