高时空分辨率PM2.5浓度土地利用回归模拟与制图

被引:9
作者
郭宇 [1 ]
邹滨 [1 ,2 ]
郑忠 [1 ]
王敏 [1 ]
许珊 [1 ]
方新 [1 ]
机构
[1] 地球科学与信息物理学院
[2] 上海市大气颗粒物污染防治重点实验室
关键词
PM2.5; 空气污染; GIS; MODIS; 土地利用;
D O I
暂无
中图分类号
X87 [环境遥感]; X831 [大气监测];
学科分类号
1404 ; 0706 ; 070602 ;
摘要
针对传统地面监测手段稀疏获取PM2.5浓度的缺陷,该研究在利用中分辨率成像光谱仪(MODIS)遥感影像反演500m空间分辨率气溶胶光学厚度(AOD)的基础上,辅以人口密度、植被叶面积指数等地理特征要素,构建了研究区时均尺度PM2.5浓度土地利用回归(LUR)模型,并与经典克里格插值方法(OK)对比进行精度评价。结果表明:(1)研究区内部AOD存在明显空间分异,中心城区AOD值高于周边地区;(2)融合AOD要素的最优LUR模型相关系数可达0.51;(3)相比OK方法,LUR模型生成的PM2.5浓度图可客观反映研究区空气污染的空间变化。研究表明,融合遥感气溶胶数据的LUR模型可在短时间尺度准确模拟地面高空间分辨率PM2.5浓度。
引用
收藏
页码:94 / 101
页数:8
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