中部快速城市化地区城市扩张与生态景观时空异质性分析——以武汉市为例  

Spatial and Temporal Heterogeneity Analysis of Urban Expansion and Ecological Landscape in Rapid Urbanization Area in Central China:A Case Study of Wuhan City

作　　者：张雪松 王云冬[2] ZHANG Xue-song;WANG Yun-dong(Key Laboratory of Geographical Process Analysis and Simulation,Central China Normal University,Wuhan 430079,China;College of Urban and Environmental Sciences,Central China Normal University,Wuhan 430079,China)

机构地区：[1]华中师范大学地理过程分析与模拟湖北省重点实验室,湖北武汉430079 [2]华中师范大学城市与环境科学学院,湖北武汉430079

出　　处：《长江流域资源与环境》2023年第8期1583-1593,共11页Resources and Environment in the Yangtze Basin

基　　金：湖北省国土整治中心2022年度专项科研课题;自然资源部土地整治重点实验室江汉平原一体化国土整治修复湖北科研工作站2022年度专项科研课题(HBZC-CG-2022-Z1015)。

摘　　要：中国正处于城市化快速发展阶段,城市扩张侵占生态空间,导致大量生态景观日益破碎,分析城市扩张与生态景观的时空异质性可促进生态文明建设和城市可持续发展。采用景观扩张指数(LEI)结合形态学空间格局分析法(MSPA)研究武汉市城市扩张与生态景观时空异质性特征,并通过建立多环缓冲区分析城市扩张类型与生态景观类型变化的关联特征。结果表明:(1)城市扩张类型中边缘式扩张处于主导地位但扩张速度逐渐减慢,飞地式扩张数量减少,分布于远城区且分散较广,填充式扩张则较集中连片,主要集中于江岸区等中心城区;(2)不同圈层的城市扩张类型和生态景观类型的关系在不同发展阶段差异显著;(3)生态景观类型以景观核心区为主,中心城区景观核心区面积随城区扩张减少,在城市扩张过程中,生态景观总体上越加破碎,边缘式扩张会加速生态景观核心区减小,飞地式扩张加剧景观单元的破碎化,填充式扩张则会弱化生态景观的破碎。本研究结果可为武汉市国土空间规划中提供决策参考,并对中部快速城市化地区同类研究具有借鉴意义。China is in the stage of rapid urbanization.Urban expansion encroaches on ecological space,resulting in a large number of ecological landscapes becoming increasingly fragmented.Analyzing the spatial and temporal heterogeneity of urban expansion and ecological landscape can promote the construction of ecological civilization and sustainable urban development.In this paper,the landscape expansion index(LEI)combined with morphological spatial pattern analysis(MSPA)was used to study the spatial and temporal heterogeneity of urban expansion and ecological landscape in Wuhan.The correlation between urban expansion type and ecological landscape type change was analyzed by establishing a multi-ring buffer zone.The results show that:(1)Among the types of urban expansion,the edge expansion is dominant but the expansion rate gradually slows down.The amount of enclave expansion decreases,which is distributed in the far urban area and is widely dispersed.The filling expansion is more concentrated and contiguous,mainly located in the central urban areas such as Jiang’an District;(2)The relationship between urban expansion types and ecological landscape types in different circles is significantly different in different development stages;(3)The core area of the central urban landscape decreases with the expansion of the urban area.In the process of urban expansion,the ecological landscape is generally more and more broken.The edge expansion will accelerate the reduction of the core area of the ecological landscape.The enclave expansion will promote the fragmentation of the landscape unit,and the filling expansion will weaken the fragmentation of the ecological landscape.This study provides decision-making support for Wuhan’s land space planning,and has reference value for similar studies in the rapid urbanization area of central China.

关 键 词：LEI MSPA 城市扩张 生态景观 武汉市 

分 类 号：F301.2[经济管理—产业经济]