城市公园对城市热环境的降温效应——以天津市为例  

Cooling effect of urban parks on urban thermal environment:a case of Tianjin

作　　者：甘爽 杨艳丽[1] 孙艳玲[1] 王中良[2] 

机构地区：[1]天津师范大学城市与环境科学学院,天津300387 [2]天津师范大学天津市水资源与水环境重点实验室,天津300387

出　　处：《天津师范大学学报（自然科学版）》2016年第4期33-38,共6页Journal of Tianjin Normal University：Natural Science Edition

基　　金：国家自然科学基金资助项目(41001022;31270510);国家科技支撑计划项目课题资助项目(2012BAC07B02);教育部新世纪优秀人才支持计划资助项目(NCET-10-0954);天津师范大学市级重点实验室开发研究基金课题资助项目(YF11700102)

摘　　要：为了解城市公园对城市热环境的影响,基于Landsat8遥感影像,通过反演天津市区地表温度和分析各公园的缓冲区,研究天津市市内六区公园的特征要素对周围环境的降温效应.结果表明:一方面,不同公园的降温范围、降温幅度和降温速率有所不同,各公园降温幅度与距离均近似成拟合二次多项式.另一方面,不同的公园特征要素对周边环境的降温效应存在差异,其中公园的绿地比例与降温范围、降温幅度和降温速率相关性最大,且二者呈拟合二次多项式.In order to learn the impact of urban park on urban thermal environment, the cooling effect of characteristics elements of the six district of Tianjin city park on surrounding environment was studied by inverting land surface temperature of Tianjin downtown and analyzing the buffer of all parks based on Landsat8 remote sensing image. Results showed that on one hand, cooling scope, cooling amplitude and cooling rate of the parks were different, and the cooling ampli＇tude and distance approximation failed into a quadratic polynomial fitting. On the other hand, the cooling effects of different park characteris-tics elements on surrounding environment were different, and the park grass area proportion had the largest correlation with cooling scope, cooling amplitude and cooling rate while they falIed into a quadratic polynomial fitting.

关 键 词：城市热岛效应 城市公园 天津市 降温效应 降温范围 降温幅度 降温速率 

分 类 号：P461[天文地球—大气科学及气象学]