摘要
城市群景观格局演变具有复杂性和一体化趋势特征,深化内在规律认知是城市群国土空间优化的科学基础。文章选取长株潭城市群为研究对象,以2000年以来五期土地利用数据为主要数据源,采用地理信息系统(GIS)和景观指数计算软件(FRAGSTATS)对景观格局演变过程进行系统分析,在此基础上运用灰色关联模型和制度分析对景观多样性变迁影响机制进行动态解析。研究结果表明:长株潭景观类型构成和布局发生显著变化,耕地与林地斑块面积持续减少,建设用地斑块面积快速增加,各类用地斑块重心呈现不同的迁移路径。主要景观类型形态与结构演变特征各异,林地、耕地和水域景观异质性与破碎程度不断上升,建设用地集中连片度明显增强,景观多样性与空间格局复杂性增加,城市群景观空间一体化演变趋势明显。研究区景观多样性演变主要受人口城镇化与经济发展驱动,其次为投资与产业结构调整,并深受规划与政策因素的影响。文章有助于对城市群国土空间演进的深入理解,为空间规划和治理提供参考。
The evolution of the landscape pattern in urban agglomerations is characterized by complexity and comprehensive features.Deepening the understanding of the underlying laws serves as the scientific foundation for optimizing the territorial space of urban agglomerations.This article selects the Chang-Zhu-Tan urban agglomeration as the research subject.Using the land-use data from five periods since 2000 as the primary data source,it conducts a systematic analysis of the landscape pattern evolution process through the application of Geographic Information System(GIS)and landscape index calculation software(FRAGSTATS).On this basis,the grey correlation model and institutional analysis are employed to dynamically analyze the influencing mechanisms of landscape diversity changes.The research findings indicate that significant changes have occurred in the composition and layout of landscape types in the Chang-Zhu-Tan urban agglomeration.The patch areas of cultivated land and forest land have been continuously decreasing,while the patch area of construction land has been increasing rapidly.The centers of gravity of various land-use patches exhibit different migration trajectories.The morphological and structural evolution characteristics of the main landscape types vary.The heterogeneity and fragmentation degree of forest land,cultivated land,and water area landscapes have been continuously rising.The degree of concentration and continuity of construction land has increased significantly.Landscape diversity and the complexity of the spatial pattern have increased,and the integrative evolution trend of the landscape space in the urban agglomeration is evident.The evolution of landscape diversity in the study area is primarily driven by population urbanization and economic development,followed by investment and industrial structure adjustment,and is profoundly influenced by planning and policy factors.This article contributes to a deeper understanding of the evolution of the territorial space in urban agglomerations and provides references for spatial planning and governance.
作者
唐常春
杜也
魏紫玲
TANG Changchun;DU Ye;WEI Ziling
出处
《城市学报》
2025年第3期2-15,共14页
Journal of Urban Sciences
基金
湖南省自然科学基金面上项目(2023JJ30014)。
关键词
景观格局
多维演变
影响机制
灰色关联模型
长株潭城市群
landscape pattern
multidimensional evolution
influencing mechanism
grey correlation model
Chang-Zhu-Tan urban agglomeration
