| 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 km2、
热岛夹点13.88 km2、4个重点热源斑块共578.13 km2；
冷岛障碍点29.83 km2、冷岛夹点3.98 km2、2个重点冷源
斑块共974.31 km2。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。 |
| 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 |
| DOI：10.19775/j.cla.2024.11.0097 |
| 投稿时间：2023-07-13修订日期：2024-01-12 |
| 基金项目:国家自然科学基金项目(52178032) |
|
| Identification of Priority Areas for Urban HeatMitigation Based on Circuit Theory: A Case Studyof Chongqing's Central City |
| LI Jiajie,XING Zhong,LI Xu |
| Abstract: |
| 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 km2 of heat island obstacle points,
13.88 km2 of heat island pinch points, 4 key heat source patches
with a total area of 578.13 km2, 29.83 km2 of cold island obstacle
points, 3.98 km2 of cold island pinch points, and 2 key cold source
patches with a total area of 974.31 km2. 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 |
| Key words: landscape architecture heat island effect urban thermal
environment circuit theory morphological spatial pattern analysis
(MSPA) Chongqing |
