测绘通报 ›› 2023, Vol. 0 ›› Issue (4): 128-134.doi: 10.13474/j.cnki.11-2246.2023.0116

• 无人机测绘技术应用推广 • 上一篇    下一篇

三维激光空地一体化在城市热岛研究中的应用——以上海延中绿地为例

孟陈1, 卫炎豪1, 武彩燕2, 欧阳霖柯3, 李俊祥2, 朱义4, 刘家霖4, 魏本胜5,6, 降瑞娇5,6   

  1. 1. 景遥(上海)信息技术有限公司, 上海 200240;
    2. 上海交通大学设计学院, 上海 200240;
    3. 上海人工智能实验室, 上海 200232;
    4. 上海市园林科学规划研究院, 上海 200232;
    5. 上海勘测设计 研究院有限公司, 上海 200050;
    6. 中国长江三峡集团有限公司长江生态环境工程研究中心, 北京 100038
  • 收稿日期:2022-12-19 发布日期:2023-04-25
  • 作者简介:孟陈(1979—),男,博士,研究方向为摄影测量和人工智能遥感应用。E-mail:jingyaoit@126.com
  • 基金资助:
    国家自然科学基金青年基金(32001162);国家自然科学基金面上项目(31971485);中国博士后科学基金面上项目(2021M702131);上海市绿化和市容管理局科研项目(G190201);中国长江三峡集团有限公司科硕项目(202103552)

Application of 3D LiDAR air-ground integration technology in urban heat island research:a case study of Yanzhong greenspace in Shanghai

MENG Chen1, WEI Yanhao1, WU Caiyan2, OUYANG Linke3, LI Junxiang2, ZHU Yi4, LIU Jialin4, WEI Bensheng5,6, JIANG Ruijiao5,6   

  1. 1. JingYao (Shanghai) Information Technology Co., Ltd., Shanghai 200240, China;
    2. School of Design, Shanghai Jiao Tong University, Shanghai 200240, China;
    3. Shanghai Artificial Intelligence Laboratory, Shanghai 200232, China;
    4. Shanghai Academy of Landscape Architecture Science and Planning, Shanghai 200232, China;
    5. Shanghai Investigation, Design&Research Institude Co., Ltd., Shanghai 200050, China;
    6. YANGTZE Eco-Environment Engineering Research Center, China Three Gorges Corporation, Beijing 100038, China
  • Received:2022-12-19 Published:2023-04-25

摘要: 城市热岛效应是城市化进程中最显著的生态环境问题之一,城市绿地基础设施作为城市关键的自然要素,能够有效地缓解热岛效应。延中绿地的规划建设是上海市为缓解热岛效应给出的“基于自然解决方案”的重大举措。本文以上海市延中绿地为研究对象,基于无人机及其相应传感器获取的空、地激光雷达数据和Landsat 8 Collection 2 Level 2数据集的地表温度数据,对延中绿地的降温作用及其内部三维绿量分布格局和影响因子进行了研究。结论如下:①延中绿地具有显著的降温效应且具有方向性差异。其最大降温距离在各方向的排序依次是:东南>西南>东北>西北,局部冷岛强度最大为西南方向,最小为东南方向;不同植被类型的降温效应从高到低依次为:乔木>草地>灌木。②延中绿地内三维绿量高值区域基本分布在其西北部靠近公路一侧,其余各处仅有高值零星分布;三维绿量与距道路距离(Droad)呈显著负相关,与距水体距离(Dwater)呈显著正相关,与距建筑(Dfw)距离呈负相关,但无显著性;影响三维绿量格局的最优模型为224.35-1.51×Droad×0.41*Dwater。研究结果对上海市热岛减缓及绿地规划管理具有重要的理论和实践意义。

关键词: 热岛效应, 延中绿地, 三维绿量, 三维激光

Abstract: Urban heat island effect is one of the most prominent ecological and environmental problems during the process of urbanization. Urban green space infrastructure is one of the key elements of the city, which can effectively alleviate the urban heat island. The planning and construction of Yanzhong greenspace is an important strategy of “natural based solution” given by Shanghai to alleviate the heat island effect. Based on the air-and ground-LiDAR data which are obtained from FEIMA UAV and its corresponding sensors, as well as land surface temperature from Landsat 8 Collection 2 Level 2 dataset, we analyze the cooling effect of Yanzhong green space in Shanghai, and the 3D vegetation volume distribution pattern and its influencing factors. The main conclusions are as the following: ① There is a directional cooling effect of Yanzhong greenspace, due to the influence of the surrounding landscape pattern. The sequence of the directional maximum cooling distance is the southeast, and followed by the southwest, northeast and northwest. While the maximum of the local cool island intensity is southwest, and the minimum is the southeast. The vegetation types greatly influence the cooling effect, with the ranking of their surface temperature from tree, grassland to shrub type. ② The higher 3D vegetation volume areas of Yanzhong greenspace mainly located in the northwest where nearby the highway, and dispersedly distributed across the greenspace. The 3D vegetation volume in Yanzhong greenspace is significantly negatively correlated with the distance from the road (Droad), and significantly positively correlated with the distance from the water body (Dwater), while there is no significant correlation with the distance from the building (Dfw). The optimal model of the 3D vegetation volume is VYanzhong=224.354 56-1.513 65Droad+0.412 85Dwater.Our study provides important theoretical and practical insights for urban heat island mitigation as well as urban greenspace planning and management.

Key words: urbanheat island effect, Yanzhong greenspace, 3D vegetation volume, 3D LiDAR

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