河北石家庄城市人工河流缓解热岛效应研究

doi:10.19741/j.issn.1673-4831.2021.0377

摘要/Abstract

摘要： 基于石家庄市2016年8月31日遥感影像数据，采用缓冲区分析方法开展石家庄市三环内人工河流-民心河降温效应研究。结果表明，（1）石家庄市3环内城市热场变异指数（UTFVI）范围为-0.23~0.37，市区城镇建设用地分布与UTFVI高值区分布相对应，城市水体及绿地分布与UTFVI低值区分布相一致，其中，民心河全线平均地表温度为35.82℃，平均UTFVI值<0.02，在城市高温区中形成条带状"冷区"。（2）民心河全线平均降温距离为165 m，在两岸缓冲区内，平均地表温度随缓冲距离的增加先迅速上升，后基本保持不变。（3）民心河各线平均UTFVI值均≤ 0.05，其中，民心河东线降温效果最好，降温距离可达到210 m，降温幅度为1.59℃；第二民心河降温效果最差，降温距离为60 m，降温幅度约为0.19℃。民心河西线、南线、北线和中线降温距离分别为150、120、180和270 m，降温幅度分别为0.65、0.40、1.60和1.39℃。（4）在民心河最小降温距离（60 m）内，且绿地面积占比>50%及城镇建设用地面积占比<48%时，水体平均UTFVI值≤ 0，存在冷岛效应，此时民心河与绿地的综合降温作用最大。研究结果将为城市人工河流建设及沿岸景观结构合理布局提供参考。

关键词: 石家庄民心河, 地表温度, 土地类型, 降温效应, 缓冲区

Abstract: As the urban heat island (UHI) effect has been intensified, cooling effect of urban artificial rivers has gradually gained more attention. Based on the remote sensing image of Shijiazhuang City on August 31, 2016, the cooling effect of the artificial Minxin River in the third ring road of Shijiazhuang City was evaluated by using buffer analysis method. The results show that:(1) The range of urban thermal field variation index (UTFVI) within the third ring road of Shijiazhuang City was -0.23-0.37. The high values of UTFVI represent the urban construction land, while the low values of UTFVI represent the water bodies and green spaces. The average surface temperature of Minxin River was 35.82℃, and its average UTFVI was lower than 0.02, leading to a strip-shaped " cold zone" in the urban region with high-temperature area. (2) The average cooling distance across the Minxin River was 165 m. Within the buffer zone on both sides of the river, the average surface temperature raised rapidly with the increasing buffer distance and then basically remained unchanged. (3) The average UTFVI values in the whole region of Minxin River were lower than 0.05. The cooling effect of east line of Minxin River was the best, the cooling distance reached to 210 m, and the cooling amplitude was 1.59℃. The cooling effect of the second Minxin River is the worst, and the cooling distance was only 60 m, and the cooling amplitude was about 0.19℃. The cooling distances of the west, south, north and middle lines of Minxin River were 150, 120, 180 and 270 m, respectively, and the corrsponding cooling amplitudes were 0.65, 0.40, 1.60 and 1.39℃, respectively. (4) Within 60 m of the minimum cooling distance of the Minxin River, a cold island effect occured when the proportion of green space was higher than 50%, the proportion of urban construction land was lower than 48%, and the average UTFVI of the urban water body was lower than zero. At that time, the comprehensive cooling effect of green space and the Minxin River was the largest. The research will provide guidance for construction of urban artificial rivers and the rational layout of shoreside landscape structures.

Key words: Minxin River of Shijiazhuang City, land surface temperature, land cover type, cooling effect, buffer zone

中图分类号:

刘亚楠, 陈艳梅, 邹长新, 李涵聪, 李鑫. 河北石家庄城市人工河流缓解热岛效应研究[J]. 生态与农村环境学报, 2021, 37(11): 1378-1385.

LIU Ya-nan, CHEN Yan-mei, ZOU Chang-xin, LI Han-cong, LI Xin. Alleviating Heat Island Effect of Urban Artificial Rivers in Shijiazhuang, Hebei Province[J]. Journal of Ecology and Rural Environment, 2021, 37(11): 1378-1385.

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