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来源：百度知道 编辑：UC知道 时间：2024/05/22 06:26:08
基于ETM+的攀枝花城市热岛效应分析
摘 要
“热岛效应”现象是现代城市气候的主要特征之一。研究城市热岛的状况及其影响机制，对于寻找缓解热岛效应的措施，改善人居环境具有科学和实用意义。攀枝花为现代重工业城市，地处亚热带山地气候区。由于地理环境复杂，过去受技术手段和其它条件的限制，对该城市热岛效应的状况、规律、趋势和方法等方面，均鲜见研究成果。现利用攀枝花市地区的LANDSAT7 ETM+卫星遥感数据和该城市地区的DEM数据进行分析，根据地理相似准则，以相对亮温来表示热岛强度。结果表明，攀枝花市的热岛效应明显，工业区、采矿区的温度明显高于城市其他区域，区域平均温度的分布由高到低为：工业区-采矿区-机场-商业区-居民区-公园-河流。从定性和定量分析结果可以看出：城市地面结构对于区域温度有直接的影响，保护现有的水体和增加绿地的分布是缓解城市热岛效应的有效途径。

关键词：LANDSAT7 ETM+；卫星遥感；热岛效应；亮温

ETM + based on the analysis of urban heat island effect in Panzhihua
Abstract
"Heat island" phenomenon is a modern city, one of the main features of climate. Study the situation of urban heat island and its impact mechanism, the search for measures to alleviate the heat island effect and improve the living environment of scientific and practical significance. Hyundai Heavy Industries for the city of Panzhihua, is located in subtropical climate zones. Due to the complexity of the geographical environment, in the past by technical means and other conditions, the situation of the urban heat island effect, laws, trends and methods, research results are rare. Is the use of Panzhihua City area LANDSAT7 ETM + satellite remote sensing data and DEM in urban areas in the analysis of the data, according to geographical criteria is similar to the relative brightness temperature to indicate the intensity of heat island. The results showed that the heat island effect panzhih