近20年太原城市群热岛演变遥感研究
Remote Sensing Study on the Evolution of Heat Island in Taiyuan Urban Agglomeration in Recent 20 Years
郑培鑫 1邓帆 1李志远 1赵恩灵 1冯倩 1韩杨1
作者信息
- 1. 长江大学 地球科学学院,湖北 武汉 430100
- 折叠
摘要
为揭示太原城市群热岛效应时空变化规律,利用2003-2021年的MODIS(Moderate-resolution Imaging Spectroradiometer)地表温度产品(MYD11A2/MOD11A2)获取太原城市群长时间序列地表温度,计算热岛强度并进行强度划分,从年、季、月以及日时间尺度对城市群的热岛变化分布特征及其演变规律进行分析.结果表明:(1)太原城市群热岛效应随城市发展呈增长趋势,2019年热岛效应最强.空间上由太原盆地外围向内部填充;(2)太原城市群热岛强度季节变化表现为:夏季>春季>秋季>冬季,太原市热岛效应季节性差异尤为明显;(3)太原城市群热岛效应从1月—6月逐步增强,热岛区域分布在太原城市群中部,7月—12月份逐渐减弱,热岛分布区域由中东部向西南部紧缩;(4)太原城市群白天热岛面积是夜晚的两倍,热岛分布夜晚较白天分散,集中在城市中心区域,冷岛分布较为相似.该结论可为太原城市群未来气候变化研究和生态城市建设提供依据.
Abstract
To reveal the temporal and spatial variation of the heat island effect in Taiyuan urban agglomeration,the MODIS(Moder-ate-resolution Imaging Spectroradiometer)surface temperature product(MYD11A2/MOD11A2)from 2003 to 2021 was used to ob-tain the long time series surface temperature of Taiyuan urban agglomeration,calculate the intensity of the heat island and divide the intensity,and analyze the change distribution characteristics and evolution law of the heat island in the urban agglomeration at the annual,quarterly,monthly and daily time scales.The results show that:(1)The heat island effect of Taiyuan urban agglomeration is generally growing,with the strongest heat island effect in 2019.In space,it is filled from the outside of Taiyuan basin to the inside;(2)Seasonal variation of heat island intensity in Taiyuan urban agglomeration is as follows:summer>spring>autumn>winter.Seasonal variation is closely related to the heat island effect in the eastern part of the urban agglomeration;(3)The heat island effect of Taiyuan urban agglomeration was gradually enhanced from January to June.The heat island area was distributed in the central part of Taiyuan urban agglomeration,and gradually weakened from July to December.The heat island distribution area was compact-ed from the Middle East to the southwest;(4)The area of heat island in the daytime of Taiyuan urban agglomeration is twice as large as that at night.The distribution of heat island at night is more dispersed than that at daytime,concentrated in the central area of the city,and at daytime,concentrated in the city's central area,and so does the distribution of cold island.This conclusion can provide a basis for future climate change research and ecological city construction in Taiyuan.
关键词
城市热岛/地表温度/时空变化/Moderate-resolutionImagingSpectroradiometer/太原城市群Key words
urban heat island/surface temperature/spatiotemporal variation/moderate-resolution imaging spectroradiometer/Taiyu-an urban agglomeration引用本文复制引用
基金项目
自然资源部城市国土资源监测与仿真重点实验室开放基金(KF-2020-05-047)
长江大学2021年教学研究项目(JY2021021)
出版年
2024
国家科技期刊平台
NSTL
万方数据