武汉市城市热岛与植被覆盖的空间相关性分析
发布时间：2018-12-18 06:18
【摘要】：以Landsat ETM遥感影像为研究数据,反演获得武汉市的地表温度,并提取NDVI信息。通过空间邻域分析和局部空间相关性分析方法,研究了武汉市的城市热岛与地表植被覆盖之间的相互关系。结果表明:武汉市地表温度和NDVI呈现明显的空间负相关性。同时,随着空间邻域半径的增加,地表温度和NDVI的空间相关性有增强后减弱的过程,绿色植被对地表温度有效调节半径约为700 m。在空间分布上,汉口、武昌、汉阳三镇核心主城区及黄陂、新洲部分远城区地表温度和NDVI负相关性最为显著,靠近水体的区域正相关性最为显著。
[Abstract]:The Landsat ETM remote sensing image is used as the research data to retrieve the surface temperature of Wuhan and extract the NDVI information. By means of spatial neighborhood analysis and local spatial correlation analysis, the relationship between urban heat island and vegetation cover in Wuhan is studied. The results show that there is a negative spatial correlation between surface temperature and NDVI in Wuhan. At the same time, with the increase of the spatial neighborhood radius, the spatial correlation between the surface temperature and the NDVI decreases, and the effective adjustment radius of the green vegetation to the surface temperature is about 700m. In spatial distribution, the negative correlation between surface temperature and NDVI was most significant in the core districts of Hankou, Wuchang, Hanyang, Huangpi and Xinzhou, and the positive correlation was most significant in the area near the water body.
【作者单位】： 武汉大学资源与环境科学学院;武汉大学地理信息系统教育部重点实验室;
【基金】：国家自然科学基金(41171312)
【分类号】：Q948;X16
本文编号：2385486
[Abstract]:The Landsat ETM remote sensing image is used as the research data to retrieve the surface temperature of Wuhan and extract the NDVI information. By means of spatial neighborhood analysis and local spatial correlation analysis, the relationship between urban heat island and vegetation cover in Wuhan is studied. The results show that there is a negative spatial correlation between surface temperature and NDVI in Wuhan. At the same time, with the increase of the spatial neighborhood radius, the spatial correlation between the surface temperature and the NDVI decreases, and the effective adjustment radius of the green vegetation to the surface temperature is about 700m. In spatial distribution, the negative correlation between surface temperature and NDVI was most significant in the core districts of Hankou, Wuchang, Hanyang, Huangpi and Xinzhou, and the positive correlation was most significant in the area near the water body.
【作者单位】： 武汉大学资源与环境科学学院;武汉大学地理信息系统教育部重点实验室;
【基金】：国家自然科学基金(41171312)
【分类号】：Q948;X16
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