摘要
越来越多城市绿地生态网络建设进入存量更新和结构性优化并存发展的阶段,生态安全优先基础上如何进一步提升城市绿地生态网络的多种生态系统服务功能是当前风景园林实践研究的重要议题。应对全球气候变化、极端天气多发导致的人居环境宜居性下降问题,目前基于气候适应的城市绿地生态网络规划关注促进自然通风以缓解夏季热岛效应,尚忽视了其冬季可能带来的负效应。从气候调节视角切入,探讨城市绿地生态网络在协同冬夏季小气候环境中的低效空间识别与精准修复技术方法。以江苏省昆山市密集城区的189个街区单元为研究对象,通过遥感反演的方法对其冬、夏季小气候环境进行分析,聚类获得7类小气候特征街区。之后,叠加现状绿地生态网络与计算流体力学模拟风环境结果,提取现状适于通风的生态廊道,从宽度、方向、类型等方面分析其潜在通风效能,耦合街区冬夏小气候环境特征,识别研判现状绿地生态网络在冬夏温湿环境调节上存在的低效问题,并提出冬夏协同的精准修复策略,为优化人居环境宜居性、提升城市绿地生态网络生态系统服务综合效能提供技术参考。
More and more cities'urban green space ecological network construction has entered the stage both with stock renewal and structural optimization.With the priority of ecological security,how to further improve the multiple ecosystem services of the urban green space ecological network is a key topic in curent landscape architecture practice and research.Facing the problem of human settlements livability declining led by global climate change and frequent extreme weather,the urban green space eco-network planning based on climate adaptation focuses on promoting natural ventilation to mitigate summer heat island effect,but neglects the negative effect it may bring in winter presently.From the perspective of climate regulation,this study discusses the low-efficiency spatial identification and precision restoration techniques of urban green space ecological network in cooperation with microclimate environment in winter and summer.189 block units in the dense urban area of Kunshan City were taken as examples.By analyzing the thermal and humidity environment of winter and summer based on remote sensing inversion,the blocks were divided into 7 categories by clustering.Secondly,by overlaying the existing urban green space network and the simulation result of wind speed,ecological corridors which are capable of ventilating are recognized.By analyzing their ventilation efficiency from aspects of width,direction and type,the existing ineffciency problems were identifed coupling with the type of block climate characteristics,and finally the accurate restoration strategies that coordinate winter and summer were proposed.It provides technical reference for optimizing the livability of human settlements and improving the comprehensive efficiency of urban green space ecological network ecosystem services.
作者
王敏
潘文钰
WANG Min;AN Wenyu(Department of Landscape Architecture,College of Architecture and Urban Planning,Tongji University,Eco-SMART LAB attached to Key Laboratory of Ecology and Energy-saving Study ofDense Habitat,Shanghai,China,200092;Shanghai Engineering Research Center of Landscaping on Challenging Urban Sites,Shanghai,China,201499;Ministry of Education,Technology Innovation Center for Land Space Eco-restoration in Metropolitan Area(MNR),Shanghai,China,202155)
出处
《园林》
2024年第1期28-37,共10页
Landscape Architecture Academic Journal
基金
国家自然科学基金面上项目“基于多重价值协同的城市绿地空间格局优化机制:以上海大都市圈为例”(编号:52178053):上海市住房和城乡建设管理委员会2023年度重点科研项目“公园城市蓝绿灰基础设施生态韧性复合关键技术研究与应用”(编号:沪建科2023-Z02-005)。
关键词
城市绿地生态网络
气候调节
温湿环境
生态修复
遥感反演
数值模拟
夏热冬冷地区
urban green space ecological network
climate regulation
thermal and humidity environment
ecological restoration
remote sensing retrieval
numerical simulation
hot summer and cold winter area
