摘要
城市化的发展引起了全球的气候变化,造成全球温度升高,城市热环境面临考验,而城市公园具有良好的降温效益,是改善城市热岛效应的关键。当前对城市公园降温效益的评估和影响因素的研究多是针对绝对降温效益,较少考虑相对降温效益。从该视角出发,以Landsat数据反演福州市三环内40个城市公园的地表温度,从降温强度、降温面积、降温梯度、降温效率4个指标评估公园降温效益,并探究公园特征对降温效益的影响,得到以下结论:公园内部温度在31.33℃~35.66℃之间,内部温度与面积、FVC、生态用地比例呈负相关,与建设用地比例呈正相关;城市公园对周边环境具有显著的降温效益,40个公园的降温强度在0.54℃~0.81℃,降温面积在9 808 316 m^(2)~158 283.3 m^(2),降温梯度在0.004 m/℃~0.027 m/℃,降温效率在1.68~259.07;公园绝对降温效益受到面积、周长、形状指数、FVC和生态用地比例的影响,相对降温效益主要受到土地利用比例的影响,与公园规模相关性较弱。
As urbanization progresses,it has triggered global climate changes,leading to a rise in global temperatures and challenging urban thermal environments.Urban parks possess significant cooling benefits and are crucial in mitigating urban heat island effects.Current research on the cooling benefits of urban parks primarily focuses on absolute cooling benefits,with less consideration given to their relative cooling benefits.Therefore,from this perspective,using Landsat data to inverse the surface temperature of 40 urban parks within the third ring of Fuzhou City,this study evaluates the cooling benefits of parks through four indicators:cooling intensity,cooling area,cooling gradient,and cooling efficiency.It also explores the impact of park characteristics on cooling benefits,yielding the following conclusions:1)The internal temperature of parks ranges between 31.33℃to 35.66℃,with internal temperature negatively correlated with area,fractional vegetation cover(FVC),and the proportion of ecological land use,and positively correlated with the proportion of developed land.2)Urban parks have significant cooling benefits on their surrounding environments,with cooling intensities ranging from 0.54℃to 0.81℃,cooling areas from 9,808,316m^(2) to 158,283.3m^(2),cooling gradients from 0.004 to 0.027,and cooling efficiencies from 1.68 to 259.07.3)The absolute cooling benefits of parks are influenced by factors such as area,perimeter,shape index,FVC,and the proportion of ecological land use,while relative cooling benefits are mainly affected by the proportion of land use,with a weaker correlation to park size.
作者
高东东
檀东昊
王则琦
高新
陈顺和
GAO Dongdong;TAN Donghao;WANG Zeqi;GAO Xin;CHEN Shunhe(School of Urban Construction,Fuzhou Technology and Business University,Fuzhou,Fujian 350715;School of Landscape Architecture and Art,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350007)
出处
《武夷学院学报》
2024年第8期72-80,共9页
Journal of Wuyi University
基金
2023年度教育部人文社会科学研究规划基金项目(23YZC0571)
福建省教育科学“十四五”规划2022年度课题(FJJKBK22-041)。
关键词
福州市
热舒适
公园降温
景观要素
相关性分析
Fuzhou
thermal comfort
park cooling
landscape elements
correlation analysis
