基于时间序列遥感的郑州市热岛效应与植被关系研究  

Relationship between Heat Island Effect and Vegetation in Zhengzhou City Based on Time Series Remote Sensing

作　　者：周迪 冯祯 何瑞珍[1] 代静怡 闫菲泽 ZHOU Di;FENG Zhen;HE Ruizhen;DAI Jingyi;YAN Feize(College of Landscape Architecture and Art,Henan Agricultural University,Zhengzhou 450002,China)

机构地区：[1]河南农业大学风景园林与艺术学院,河南郑州450002

出　　处：《林业调查规划》2025年第2期142-154,共13页Forest Inventory and Planning

基　　金：河南省高等学校重点科研项目城市形态与风环境的耦合关系研究(19A416004);郑州市绿色空间布局对城市微气候的影响机制(31470029).

摘　　要：近些年来城市热岛效应越来越显著,严重影响城市的健康发展,改善城市热环境问题已成为当下关注的焦点。利用不同季节的Landsat-8遥感数据,采用ENVI、ArcGIS和SPSS等软件分析郑州市市区地表温度(LST)与归一化植被指数(NDVI),研究郑州市城区不同区位的城市热岛效应与植被之间的关系及其季节变化特征,进一步丰富城市热岛与城市布局、城市规模的关系研究。结果表明,郑州市市区植被覆盖分布存在明显的空间差异和季节差异,夏季植被覆盖度最大,且高植被覆盖度区域最多;夏季热岛效应最为显著,具体呈现距市中心越近热岛效应越显著的趋势;市区不同季节的地表温度存在一定空间差异,全年温度变化范围和标准差最大值出现在三环内,除夏季外,年均温最大值出现在三环,较低温度在二环内;LST与NDVI在春夏秋三季呈负相关性,冬季呈正相关性,夏季的相关性最强,同时LST与NDVI在高温区负相关性更强,表明植被可有效降低地表温度,缓解城市热岛效应强度。In recent years,the urban heat island effect has become increasingly significant,seriously affecting the healthy development of cities.Improving the urban thermal environment has become a current focus of attention.Based on Landsat-8 remote sensing data in different seasons,ENVI,ArcGIS and SPSS software were used to analyze the land surface temperature(LST)and normalized difference vegetation index(NDVI)in Zhengzhou City,and the relationship between urban heat island effect and vegetation in different locations of Zhengzhou City and its seasonal variation characteristics were studied,further enriching the research on the relationship between urban heat island and urban layout and urban scale.The results showed that there were significant spatial and seasonal differences in the distribution of vegetation coverage in the urban area of Zhengzhou,and the vegetation coverage was highest in summer,and the areas with high vegetation coverage were the most abundant;the heat island effect was most significant in summer,showing a trend that the closer the distance to the city center,the more significant the heat island effect;there were some spatial differences in urban surface temperature in different seasons,and the maximum range and standard deviation of annual temperature variation occurred in the third ring road,and except summer,the maximum annual average temperature occurred in the third ring road,while the lower temperature occurred in the second ring road;there was a negative correlation between LST and NDVI in spring,summer and autumn,a positive correlation in winter,and the strongest correlation in summer,at the same time,the negative correlation between LST and NDVI was stronger in high temperature area,which indicated that vegetation could effectively reduce land surface temperature and alleviate the intensity of urban heat island effect.

关 键 词：热岛效应 地表温度 植被覆盖度 NDVI LST 郑州市 

分 类 号：X16[环境科学与工程—环境科学] Q948.2[生物学—植物学] TP79[自动化与计算机技术—检测技术与自动化装置]