城市景观格局对热环境影响遥感研究

为揭示城市景观格局对热环境的影响,在遥感及景观理论的支持下,对长春市1993年、2005年的城市热环境与景观格局进行分析。研究发现,在清理围墙院落等科学、合理的城市规划影响下,研究区"封闭式"的景观状态得以改变,向着离散、多样、均匀的方向发展;热环境也有所改善,特别是高温区面积减少了6.2%;城市热环境不仅与下垫面的景观类型密切联系,还与景观类型的空间组合格局有关系。对该区地表温度与景观多样性指数进行分析,发现二者具有明显的二次抛物线相关关系。

Research on the Impact of Urban Landscape Pattern on Thermal Environment Using Remote Sensing

To reveal the impact of urban landscape pattern on thermal environment,based on the theories of remote sensing and landscape,this paper analyzes the urban thermal environment and landscape pattern of Changchun in1993 and 2005.The research finds that: under the influence of scientific and reasonable urban planning including cleaning up the fence yard and so on,the "closed" landscape condition of study area changes and develops toward the direction of scatter,variety and uniformity.Thermal environment is also improved,especially the area of high temperature reduced by 6.2%.The urban thermal environment not only closely contacts with the landscapetype of the underlying surface,also with spatial pattern of landscape types.Analyzing the surface temperature and landscape diversity indexes,it finds that they have the obvious second-degree parabola relation.