城市景观格局变化与热环境影响分析

发布时间：2018-01-10 13:19

本文关键词：城市景观格局变化与热环境影响分析　出处：《福建师范大学》2015年硕士论文　论文类型：学位论文

【摘要】：城市化进程不断的加快,城镇人口不断增加,带来经济增长的同时,也引发了一系列生态环境问题,严重问题之一就是城市热岛效应的加剧。研究城市热岛效应的影响因素不仅对揭示城市景观的生态过程有重要意义,而且对城市规划、城市空间结构的调整和城市环境的评价都有重要的指导意义。目前,对于城市热环境影响因素的分析以单因子居多,缺少对于城市热环境形成机理和地表能量过程的系统性研究。因此为了更充分的认识城市热岛效应的影响因素及影响因素之间的差异。本研究选取沿海经济发达地区的代表—福州市为研究区,利用RS、GIS技术和城市景观生态理论,开展了2002-2014年福州市景观变化和生态分析、热红外数据的地表温度反演及城市热环境影响机理研究。将影响城市热环境的因素分为土地覆盖俐用类型、人类活动和景观格局三大类进行分析和研究,分析三者因素变化与城市地表温度变化的相关关系,最终利用主成分分析方法(PCA),研究土地覆盖/利用类型、人类活动和景观指数对城市地表温度影响的差异性和关系程度,分析城市热岛效应的成因及其对生态环境的影响,提出改善城市热环境的对策和措施。
[Abstract]:The process of urbanization continues to accelerate, the urban population continues to increase, bringing economic growth, but also caused a series of ecological environmental problems. One of the serious problems is the aggravation of urban heat island effect. The study of the influencing factors of urban heat island effect is not only important to reveal the ecological process of urban landscape, but also to urban planning. The adjustment of urban spatial structure and the evaluation of urban environment have important guiding significance. At present, the single factor is the main factor in the analysis of urban thermal environment. There is no systematic research on the formation mechanism of urban thermal environment and surface energy process. Therefore, in order to fully understand the influence factors of urban heat island effect and the difference between the influencing factors, this study selects the coastal economic development. The representative of the area-Fuzhou for the study area. The landscape change and ecological analysis of Fuzhou from 2002 to 2014 were carried out by using RS GIS technology and urban landscape ecology theory. Surface temperature inversion of thermal infrared data and study on the mechanism of urban thermal environment. The factors affecting urban thermal environment are divided into three categories: land cover, human activities and landscape pattern. The relationship between the change of three factors and the change of urban surface temperature was analyzed. Finally, the method of principal component analysis (PCA) was used to study the type of land cover / use. The difference and relationship between human activity and landscape index on urban surface temperature, the causes of urban heat island effect and its influence on ecological environment are analyzed, and the countermeasures and measures to improve urban thermal environment are put forward.
【学位授予单位】：福建师范大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P901;X16;P208

【参考文献】