城市公园降温效应的季节性差异研究——以石家庄市为例  

Seasonal Differences in the Cooling Effect of Urban Parks——A Case Study of Shijiazhuang

作　　者：张俊艳 林高山[1,2] 王华静 杨存建[1,2] ZHANG Jun-yan;LIN Gao-shan;WANG Hua-jing;YANG Cun-jian(Key Laboratory of Land Resources Evaluation and Monitoring in Southwest Ministry of Education,Chengdu 610068,Sichuan,China;Central Laboratory,Faculty of Geography and Resources Science,Sichuan Normal University,Chengdu 610101,Sichuan,China)

机构地区：[1]西南土地资源评价与监测教育部重点实验室,四川成都610068 [2]四川师范大学地理与资源科学学院,四川成都610101

出　　处：《西北林学院学报》2019年第1期247-253,共7页Journal of Northwest Forestry University

基　　金：国家科技支撑项目(2014BAL01B04);四川省教育厅重点项目(11ZA098)

摘　　要：为研究不同时间尺度下城市公园绿岛效应的演变过程和变化特征,选取石家庄二环内区域2014-2015年4景不同季节的Landsat8TM遥感影像数据,利用定量遥感中的地温反演模型、ArcGIS的缓冲区工具以及景观格局分析理论,对研究区公园绿岛效应的季节演变特征与景观格局指数进行分析。结果表明:1)城市公园对周边热环境的降温范围和幅度有明显季节差异,各个公园的季节差异大小各有不同;2)在夏季,公园是城市绿岛的集中所在地,其他季节则不明显;3)当内部草地和不透水面占比之和超过50%时,公园在春、秋、冬季节的绿岛效应便会明显减弱,超过80%时会成为城市热岛中心;4)当内部林地和水体占比超过55%时,公园在四季均有明显降温效应。In order to understand the evolution process and characteristics of city park green island effect at different time scales,Landsat8 TM remote sensing image data of Shijiazhuang in four seasons during 2014-2015 were selected.By applying earth temperature inversion technology of quantitative remote sensing,tool buffer of ArcGIS,and landscape pattern analysis theory,the seasonal evolution features and landscape pattern index of park green island effect in the study area were investigated.The results showed that 1) there were obvious seasonal differences in the temperature range and range of the urban parks on the surrounding thermal environment,and the seasonal differences in each park were different.2) In the summer,city islands were concentrated in parks,it was not true in other seasons.3) When the ratio of internal grass and impervious surface was more than 50%,the green island effect of the parks significantly reduced in all the seasons except for summer,when the ratio was over 80%,city parks became the city heat island center.4)When the woodland and water body accounted for more than 55%,the parks had significant cooling effect in the four seasons.

关 键 词：地表温度 城市公园 降温效应 季节差异 

分 类 号：S731.2[农业科学—林学]