基于landsat8的长沙市主城区热岛空间格局研究

Study on the Spatial Pattern of Heat Island in Changsha City Based on Landsat8

随着中国经济的迅速发展,城市化进程日益加快,城市热岛效应造成的影响也日益明显。本文以长沙市主城区为例,选取2015年10月的landsat8卫星遥感影像数据,运用辐射传导方程法进行地表温度反演,并通过热岛强度指数计算对主城区进行热岛强度等级分区,探讨长沙市主城区的热岛分布格局,识别典型热岛空间,为针对该类城市空间进行生态化更新改造的策略研究提供基础,并对提高城市人居环境质量具有较强的现实意义。

With the rapid development of China’s economy,the process of urbanization is accelerating,and the impact of the urban heat island effect is also becoming increasingly apparent.This article takes the main urban area of Changsha City as an example,selects the landsat8 satellite remote sensing image data from October 2015,uses the radiation conduction equation method to perform surface temperature inversion,and uses the heat island intensity index to calculate the heat island intensity level zoning of the main urban area.The distribution pattern of heat islands in the main urban area,identifying typical heat island spaces,provides a basis for research on strategies for ecological renewal and transformation of such urban spaces,and has a strong practical significance for improving the quality of urban human settlements.