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苏州环太湖地区生态网络构建与空间冲突识别 被引量:22

Ecological Network Construction and Spatial Conflict Identification Around Taihu Lake Area in Suzhou City.
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摘要 快速城市化导致的生境破碎化问题日益严重,构建生态网络对维护区域生态安全具有重要意义。以苏州环太湖地区为例,基于2017年的土地利用数据和数字高程模型(DEM)数据,采用形态学空间格局分析(MSPA)和最小累积阻力模型(MCR)生成生态源地、潜在生态廊道、缓冲区,将该生态网络与城镇建设用地空间叠加,研判用地冲突情况。结果表明,苏州环太湖生态网络面积为100965.79 hm^2,其中生态源地占35.72%,生态廊道占5.82%,生态缓冲区占58.46%;16块生态源地均为大型林地、水域或湿地,总体呈现“西山东水”的格局,源地间连通性差,东南部破碎化明显;潜在生态廊道有105条,其中极重要廊道12条,东南部廊道密度高于西北部,西北部廊道宽度大于东南部;东部生态缓冲区普遍大于西部;城镇空间与生态网络的冲突呈现从主建成区向外围逐步减弱的特点,古城与生态廊道的冲突更为激烈,建成区边缘对缓冲区侵占更多,故古城应结合城市更新,修复骨干水系和绿化,疏通重要生态廊道,协同治理城南街道等,打通城区东西极重要廊道的最后1 km,复壮“四角山水”的西南绿楔。该研究可为环太湖生态安全和空间规划提供技术依据。 Rapid urbanization led to serious habitat fragmentation,therefore,the construction of ecological network is of great significance to regional ecological security.Morphological spatial pattern analysis and minimum cumulative resistance model were applied to identify the ecological source,potential ecological corridor and ecological buffer zone based on the land use dataset and digital elevation model(DEM)in 2017,around Taihu Lake area.Then the urban construction land and the identified ecological network were spatially overlaid to explore the land use conflict.The area of the ecological network is 100965.79 hm 2,among which ecological source area,potential ecological corridor,and ecological buffer zone accounted for 35.72%,5.82%and 58.46%,respectively.All the 16 ecological source areas are large-scale ecological land,including forest land,water bodies,and wetland.In terms of spatial distribution,the mountainous areas are mainly distributed in the west of the study area,and the water areas are mainly distributed in the east of the study area.However,the connectivity among the ecological source areas is weak and these ecological source areas are highly fragmented in the southeast.There are 105 potential ecological corridors,12 of which are very important ones.The densities of the ecological corridors in the southeast are higher than that in the northwest,and the widths of the ecological corridors in the northwest are wider than that in the southeast.The area of ecological buffer zone is generally larger in the east than that in the west.From the main built-up area to the periphery of the city,the conflict between urban land and ecological network is gradually weakened,while the conflict between ancient city and ecological corridor is more striking.These conflicts are mainly resulted from the encroachment of ecological buffer zone by the urban fringe.Therefore,combining with urban renewal,multiple ecological protection measures should be carried out in the ancient city,for example,repairing the backbone water system and greening,linking the critical ecological corridors,regional coordinated governance in Chengnan residential district,restoring the green wedge in the southwest.This study is expected to provide technical support for ecological security and urban planning around Taihu Lake area.
作者 陈德超 施祝凯 王祖静 余成 CHEN De-chao;SHI Zhu-kai;WANG Zu-jing;YU Cheng(School of Environmental Science and Engineering,Suzhou University of Science and Technology,Suzhou 215009,China)
出处 《生态与农村环境学报》 CAS CSCD 北大核心 2020年第6期778-787,共10页 Journal of Ecology and Rural Environment
基金 国家自然科学基金(41801148) 苏州市2018年软科学研究项目(SR201811) 2018年大学生创新创业训练计划项目(苏科大教通〔2018〕40号)。
关键词 生态源地 生态廊道 生态缓冲区 空间管制 形态学空间格局分析(MSPA) 最小累积阻力模型(MCR) ecological source ecological corridor ecological buffer zone spatial governance morphological spatial pattern analysis(MSPA) minimal cumulative resistance model(MCR)
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