基于电路理论的城市高温控制优先区域识别——以重庆市中心城区为例  

Identification of Priority Areas for Urban Heat Mitigation Based on Circuit Theory:A Case Study of Chongqing's Central City

作　　者：李佳杰 邢忠[1,2] 李旭[1,2] LI Jiajie;XING Zhong;LI Xu

机构地区：[1]重庆大学建筑城规学院,重庆400045 [2]重庆大学山地城镇建设与新技术教育部重点实验室,重庆400045

出　　处：《中国园林》2024年第11期97-103,共7页Chinese Landscape Architecture

基　　金：国家自然科学基金项目(52178032)。

摘　　要：特大城市中心区热岛效应成因复杂,识别出对城市热岛效应具有关键影响的斑块,从而将降温措施用在最需要的地方,有助于在高温控制行动中降本增效。以重庆市中心城区为例,基于遥感影像反演地表温度,综合MSPA分析、景观连通性评估识别城市冷、热岛源地,通过电路理论构建冷、热岛网络并识别夹点、障碍点与高中心性源地斑块,从而定位城市高温控制优先区域。结果表明:研究区共有冷岛网络22条,其中重要廊道6条;热岛网络90条,其中重要廊道78条。基于冷、热岛网络识别的高温控制优先区域包含热岛障碍点78.35 km^(2)、热岛夹点13.88 km^(2)、4个重点热源斑块共578.13 km^(2);冷岛障碍点29.83 km^(2)、冷岛夹点3.98 km^(2)、2个重点冷源斑块共974.31 km^(2)。研究结果对重庆市中心城区高温控制优先区域甄别及后续针对性生态修复规划具有指导与借鉴价值。The causes of urban heat island effect in the central areas of megacities are complex.Identifying the patches that have a key impact on the urban heat island effect and applying cooling measures to the most needed places can help reduce costs and increase efficiency in controlling high temperatures.Taking the central urban area of Chongqing as an example,based on the remote sensing images to invert the surface temperature,the urban cold and heat island sources are identified by integrating the MSPA analysis and landscape connectivity assessment.The cold and heat island networks are constructed,and the pinch points,barrier points and high centrality source patches are identified by using the circuit theory,so as to locate the priority areas for urban high temperature control.The results show that there are 22 cold island networks in the study area,including 6 important corridors,and 90 heat island networks,including 78 important corridors.The priority areas for high temperature control identified based on the cold and heat island networks include 78.35 km^(2)of heat island obstacle points,13.88 km^(2)of heat island pinch points,4 key heat source patches with a total area of 578.13 km^(2),29.83 km^(2)of cold island obstacle points,3.98 km^(2)of cold island pinch points,and 2 key cold source patches with a total area of 974.31 km^(2).The research results have guiding and reference value for the identification of priority areas for high temperature control and the subsequent targeted ecological restoration planning in the central urban area of Chongqing.

关 键 词：风景园林 热岛效应 城市热环境 电路理论 形态学空间格局分析(MSPA) 重庆市 

分 类 号：TU986[建筑科学—城市规划与设计]