广佛同城化核心区热环境效应与动态变化
Dynamic Change and Thermal Environment Effect of Guangzhou and Foshan Core Cohesion Area
钟培鸣1
作者信息
- 1. 广州大学地理科学学院,广东广州510006
- 折叠
摘要
[目的]探讨政府同城化政策引导下,广佛同城化核心区域热环境变化的特征.[方法]以广州和佛山两市的同城化为背景,基于2000、2005、2009和2014年的Landsat TM/ETM+/OLI影像数据,运用辐射传导方程法反演了广佛同城化核心区的地表温度来表征城市热环境,并通过热场强度指数对地表温度进行标准化处理来观察其动态变化特征.[结果]广佛同城化核心区自21世纪以来热岛范围明显缩减,热岛中心从广州向佛山转移,低温和常温范围逐渐扩大;广州和佛山地温差异明显,近15 a来佛山的次高温区面积占优、广州的“低温谷”扩大显示出广佛处于城市发展的不同阶段.[结论]研究结果为广佛同城化核心区域一体化发展的策略制定提供了参考.
Abstract
[Objective] To discuss the dynamic change and thermal environment effect Guangzhou and Foshan Core Cohesion Area under government urban integration.[Method] Under the background of Guangzhou and Foshan urban cohesion,the land surface temperature in Guangzhou and Foshan urban core cohesion area was retrieved by the method of radioactive transfer equation,based on Landsat TM/ETM +/OLI remote sensing image acquired in 2000,2005,2009 and 2014.We studied the dynamic changes of LST by standardizing the LST with heat field intensity index.[Result] Heat island range obviously reduced,low temperature and normal temperature range increased in urban core cohesion area since the 21st century,while the heat island center moved from Guangzhou to Foshan.Land surface temperature was markedly different in Guangzhou and Foshan.Both the dominant situation of second-high temperature in Foshan and the expansion of "low temperature valley" in Guangzhou suggested that Guangzhou and Fosharn were at different stages of urban development.[Conclusion] This research provides references for the strategy making of integrated development of Guangzhou and Foshan Core Cohesion Area.
关键词
热环境效应/时空分异/地表温度反演/热强度指数/广佛同城化核心区Key words
Thermal environment effect/Spatial-temporal variation/Land surface temperature retrieval/Heat field intensity index/Guangzhou and Foshan core cohesion area引用本文复制引用
基金项目
广东省广州市对外科技合作专项(2012J5100044)
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据