基于遥感指标的6个世园公园热环境效应对比分析

发布时间：2018-03-08 10:44

  本文选题：城市公园　切入点：降温距离　出处：《西北林学院学报》2016年06期 　论文类型：期刊论文

【摘要】：依据文献和实地调研,借助于专业版的谷歌地球和太乐地图,人机交互勾绘获得6个世园公园(昆明、沈阳、台北、西安、青岛和唐山)的边界数据和鸟瞰图。以2015年或2016年夏季过境的Landsat卫星影像为数据源,运用ENVI软件计算出6个世园公园的NDVI、MNDWI、IBI和LST,以降温距离和冷岛强度衡量世园公园夏季降温效果,通过外部缓冲区距离梯度分析,初步确定了6个世园公园冷岛效应的有效距离。剖面分析与主成分分析表明6个世园公园均表现为LST与NDVI、MNDWI呈负相关,与IBI正相关;NDVI与IBI、MNDWI呈负相关,除西安、台北世园公园外,IBI与MNDWI之间为正相关。相关性分析表明,6个世园公园的降温距离、冷岛强度与其总面积、水体面积、绿地面积、边界长度和LSI呈正相关,与不透水面面积、SHEI呈负相关,该结果对热岛缓解型公共绿地的规划与建设,有一定的理论和实践启示。
[Abstract]:According to the literature and field research, with the help of the professional Google Earth and Tai Le maps, six parks of Shiyuan (Kunming, Shenyang, Taipei, Xi'an, Kunming, Shenyang, Taipei, Xi'an) were drawn by human-computer interaction. The boundary data and aerial view of Qingdao and Tangshan. The data source is Landsat satellite images that transit in the summer of 2015 or 2016. The ENVI software was used to calculate the NDVI MNDWIIIBI and LST of the six parks. The cooling effect of the park in summer was evaluated by the cooling distance and the intensity of the cold island. The distance gradient analysis of the outer buffer zone was carried out. The effective distance of cold island effect in 6 parks was preliminarily determined. The results of profile analysis and principal component analysis showed that LST was negatively correlated with NDVI MNDWI, and positively correlated with IBI with IBI MNDWI, with the exception of Xi'an. The correlation analysis showed that the cooling distance, cold island intensity and total area, water body area, green space area, boundary length and LSI were positively correlated with the temperature drop distance and the intensity of cold island in the six parks. There is a negative correlation between SHEI and the area of impermeable surface area. This result has some theoretical and practical implications for the planning and construction of public green land of heat island relief type.
【作者单位】： 陕西职业技术学院旅游系;西北农林科技大学林学院;陕西省农业广播电视学校高陵分校;西北农林科技大学风景园林艺术学院;
【基金】：国家“十二五”科技支撑计划课题(2015BAD07B00) 国家林业局林业公益性行业科研专项(201104045)
【分类号】：X16;TU986
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本文编号：1583576