城市公园降温效应分析——以石家庄市为例  

Cooling effect of city parks——A case of Shijiazhuang

作　　者：肖捷颖[1] 季娜[1] 李星[1] 于柳溪 姬芳[1] 

机构地区：[1]河北科技大学环境科学与工程学院河北省污染防治生物技术实验室,石家庄050018

出　　处：《干旱区资源与环境》2015年第2期75-79,共5页Journal of Arid Land Resources and Environment

基　　金：河北省自然基金:城市热岛效应及减缓策略优化研究--以石家庄市为例(D2010000867)资助

摘　　要：基于Landsat TM影像,利用地表温度反演、缓冲区分析及相关分析法,定量研究石家庄市区主要公园对周边热环境的降温效应。首次提出降温效应包括降温范围、幅度、速率三方面。结果表明:公园降温效应明显,但存在差异;降温幅度拟合曲线为二次多项式且拟合度较高;与降温范围、幅度、速率呈显著相关的特征要素为公园面积、水体比例和不透水面比例。从降温效应角度规划设计公园时,面积在32hm2最适宜,水体比例应不低于19%,不透水面比例小于50%。The cooling effect of city parks to surrounding thermal environments and its affecting factors was Quantitatively analyzed by buffer analysis and correlation analysis based on May 11,2010,Landsat TM image of Shijiazhuang. The concept of cooling effect which includes cooling scope,temperature difference and cooling rate was proposed in the study. Results show that cooling effect of parks was obvious while there were differences; each fitting curve of park cooling amplitude was in conformity to quadratic polynomial while the fitting degree was high; Cooling scope,cooling amplitude and cooling rate were significantly related to park area,water area percentage and imperious surface area percentage respectively. It is better for designing park area around 32 ha,water area proportion more than 19% and impervious surface percentage less than 50%.

关 键 词：降温效应 公园 城市热环境 遥感 

分 类 号：X87[环境科学与工程—环境工程] TU986[建筑科学—城市规划与设计]