西安理工大学学报2024，Vol.40Issue(1)：15-26,12.DOI:10.19322/j.cnki.issn.1006-4710.2024.01.002
城市空间水体热环境效应研究
Research on thermal environment effect of water bodies in urban space:a case study of seven districts of Chongqing
摘要
Abstract
As an important sensitive factor of the surface thermal environment,water bodies play an important role in mitigating thermal environmental effects.Based on the land cover data and thermal environment index data in 2003,2011,and 2019,taking the seven districts of the main city of Chongqing as an example,the landscape pattern is combined with the thermal environ-ment,with spatial and correlation analyses are utilized to explore the influence of important sur-face cover on the cooling capacity of water bodies and the specific regulation mechanism of water bodies on the thermal environment effect.The results show that:①Compared with bare ground,vegetation,and built-up area cover types,the thermal environment index of water bodies is at the lowest level,and that there is a significant negative correlation with the thermal environment effect,which has a good cooling effectand the unit water body has a stronger cooling effect than the unit vegetation.②There are interactions between water bodies and vegetation,and with the increase of the proportion of vegetation,the worse the cooling effect of water bodies is;in the non-urban land,the cooling effect of vegetation is the best,and with the increase of the density of urban development,the cooling effect of water bodies is also gradually enhanced,which is beyond the ability of vegetation to regulate the thermal environment.③The thermal environment of the water body itself has nothing to do with the shape index of the water body,and is related to the factors of area,length,width and depth,and the cooling effect is enhanced with the increase of area,length,width and depth within a certain range.④The cooling effect of the water body gradually decreases as the buffer distance increases.The optimal cooling range of rivers is about 200 m,and the effective cooling range of water ponds and reservoirs is about 300 m.The cooling effect of water bodies in urban areas is also improved with the increase of buffer distance.In or-der to promote the improvement of the urban thermal environment,in the future mechanisms such as increasing greening in urban space and strengthening water circulation should be utilized according to local conditions to mitigate the urban thermal environment effect and achieve stable and sustainable development of urban ecology.关键词
水体/植被/热环境效应/降温机制/重庆市主城七区Key words
water body/vegetation/thermal environment effect/cooling mechanism/Chongqing main city seven district分类
资源环境引用本文复制引用
杨清源,邓睿,汤伟宏,张用川..城市空间水体热环境效应研究[J].西安理工大学学报,2024,40(1):15-26,12.基金项目
国家重点研究计划资助项目(2019YFB2102503) （2019YFB2102503）
重庆市气象部门业务技术攻关资助项目(YWJSGG-202218) （YWJSGG-202218）
