武汉市主城区公园景观的热环境效应  

Thermal Environmental Effects of Park Landscape of Main Urban Region in Wuhan

作　　者：陈斌 徐尚昭 杨顶田[3] 王宏志[4] CHEN Bin;XU Shangzhao;YANG Dingtian;WANG Hongzhi(Guangdong Provincial Key Laboratory of Environmental Protection and Nuclear Radiation Tracking Research,Research Institute No.290,CNNC,Shaoguan,Guangdong 512029,China;Guangdong Provincial Engineering Technology Research Center of Radioactive Eco-environmental Protection,Shaoguan,Guangdong 512029,China;Guangdong Key Laboratory of Ocean Remote Sensing,South China Sea Institute of Oceanology,Chinese Academy of Sciences,Guangzhou 510301,China;College of Urban and Environment Science,Central China Normal University,Wuhan 430079,China)

机构地区：[1]核工业二九○研究所广东省环境保护核辐射追踪研究重点实验,广东韶关512029 [2]广东省放射性生态环境保护工程技术研究中心,广东韶关512029 [3]中国科学院南海海洋研究所广东省海洋遥感重点实验室,广州510301 [4]华中师范大学城市与环境科学学院,武汉430079

出　　处：《遥感信息》2021年第3期58-66,共9页Remote Sensing Information

基　　金：广东省海洋遥感重点实验室(中国科学院南海海洋研究所)基金项目(2017B030301005-LORS2009);中核集团核工业二九○研究所科研创新项目(202003)。

摘　　要：针对城市热岛效应给城市居民生活带来的负面影响日益显著的问题,以武汉市为研究区,使用高分2号遥感影像,采用人机交互解译方法得到研究区公园景观类型,同时基于2016年7月23日Landsat-8 OLI影像,采用IB算法(image-based method)反演得到主城区地表温度,对研究区公园景观的热环境效应进行分析。研究表明:公园内部不透水层地表平均温度最高,为36.19℃,而林地、草地和水体平均温度相对较低,均低于30℃,其中水体平均温度最低,仅有27.57℃;公园内部林地、草地和水体上空形成明显低温集聚区,而不透水层地表上空易形成高温集聚区;公园降温影响范围和降温幅度与公园中林草地面积、林草地景观聚集度呈现明显的正相关性,而与不透水层面积和景观聚集度之间呈现明显的负相关性。本研究对于城市公园规划选址、公园内部景观结构设计和提升城市人居环境适宜性都有着重要意义。Urban heat island effect has brought more and more significant negative impacts on the life of urban residents.This paper uses the human-computer interactive interpretation method to obtain the park landscape classification results of the main urban area of Wuhan based on the GF-2 satellite remote sensing image.Then,it uses the IB algorithm(image-based method)to retrieve the surface temperature of the main urban area of Wuhan based on the Landsat-8 OLI image,obtained on July 23,2016.It further analyzes the thermal environmental effects of the park landscape in the study area.The results show that the average temperature of the impervious surface in the park is 36.19℃.The average temperature of woodland,grassland and water body is relatively low and below 30℃,of which the average temperature of water body is the lowest,only 27.57℃.The woodland,grassland and water bodies inside the park are prone to form obvious low-temperature accumulation areas,and the impervious layers of the ground surface tend to form high-temperature accumulation areas.The impact range and extent of cooling in the park are obviously positively correlated with the area of forest and grassland and the degree of forest and grassland landscape aggregation in the park while there is an obvious negative correlation between the area of impervious layer and the degree of landscape aggregation.This research shows a great significance for the planning and site selection of urban parks,the design of the internal landscape structure of the park and the improvement of the suitability of urban human settlements.

关 键 词：景观格局 公园 城市热环境 武汉市 适宜性 

分 类 号：P46[天文地球—大气科学及气象学]