城市道路绿带与地表温度的相关性研究  

Study of the Correlations Between Urban Road Greening and Land Surface Temperature

作　　者：房磊 张恒瑜 孙希辉 徐鑫 路兴慧 张忠峰 赵红霞[1] FANG Lei;ZHANG Heng-yu;SUN Xi-hui;XU Xin;LU Xing-hui;ZHANG Zhong-feng;ZHAO Hong-xia(School of Agronomy and Agricultural Engineering,Liaocheng University,Liaocheng 252000,China;School of Landscape Architecture,Northwest A&F University,Xianyang 712199,China;School of Forestry Engineering,Shandong Agricultural and Engineering University,Jinan 250000,China)

机构地区：[1]聊城大学农学与农业工程学院,聊城市252000 [2]西北农林科技大学风景园林艺术学院,咸阳市712199 [3]山东农业工程学院林业工程学院,济南市250100

出　　处：《公路》2023年第3期358-364,共7页Highway

基　　金：国家自然科学基金,项目编号31901210。

摘　　要：为探究道路绿带对地表温度(LST)的影响,以聊城市为研究对象,基于Landsat 8四季遥感影像,反演了19条主要道路的地表温度,并计算了归一化差异植被指数(NDVI)。对道路结构和植物配植进行基础调查后,对LST数据进行采样,分析了不同行道树的降温效果。利用散点图分析了NDVI和LST在样点尺度和道路尺度的相关性。结果表明:(1)在夏季,当道路宽度在30 m~55 m之间时,“白蜡+国槐”组合的降温效果最好,平均降温1.11℃,当道路宽度在60 m~85 m时,“二球悬铃木+白蜡”组合的降温效果最好,平均降温1.52℃;(2)在道路剖面折线图上,道路NDVI和LST呈现镜像关系;(3)在样点尺度上,NDVI和LST夏季相关性最强,两者为负相关。因此,研究不同道路绿带形式和尺度下LST变化,有助于优化道路绿带群落结构。In order to explore the effect of road greening on land surface temperature,the land surface temperature(LST)of 19 main roads in Liaocheng is retrieved based on Landsat 8 remote sensing images in four seasons,and the normalized difference vegetation index(NDVI)of roads is calculated.Based on the investigation of road structure and plant planting status,the cooling effect of different street trees is analyzed by sampling with LST data.Scatter plot is used to analyze the correlation between NDVI and LST at the sample scale and road scale.The results show that:(1)In summer,when the road width is between 30 m~55 m,the combination of"Fraxinus chinensis Roxb and Sophora japonica Linn"has the best cooling effect,with an average cooling effect of 1.11℃.When the road width is between 60 m and 85 m,the combination of Platanus hispanica Muenchh.and Fraxinus chinensis Roxb had the best cooling effect,with an average cooling of 1.52℃;(2)on the road profile line,NDVI and LST present a significant mirror image relationship;and(3)at the sample scale,the correlation between NDVI and LST is the strongest in summer,and they are negatively correlated.Therefore,exploring the changes of LST in different road greening forms is helpful to select more suitable tree species,so as to optimize the community structure of road greening.

关 键 词：城市生态 道路断面布局形式 NDVI LST 行道树 

分 类 号：U418.67[交通运输工程—道路与铁道工程] TU528.42[建筑科学—建筑技术科学]