厦门市林地与建设用地对大气气溶胶空间分布的影响分析  

Impacts of the Forests and Built-up Areas on the Spatial Distribution of Aerosol in Xiamen City

作　　者：赵颜创[1,2] 赵小锋[1,2] 刘乐乐[1,2,3] 刘梦悦 

机构地区：[1]中国科学院城市环境与健康重点实验室中国科学院城市环境研究所,厦门361021 [2]厦门市城市代谢重点实验室,厦门361021 [3]中国科学院大学,北京100049 [4]厦门大学环境与生态学院,厦门361102

出　　处：《地球信息科学学报》2016年第12期1653-1659,共7页Journal of Geo-information Science

基　　金：厦门市科技计划项目(3502Z20142020);中国科学院重点部署项目(KJZD-EW-TZ-G06-02);国家科技支撑项目(2012BAC21B03)

摘　　要：分析大气气溶胶空间分布的影响因素有助于理解其变化机制与规律,从而为大气环境质量的调控提供科学依据。本文以厦门市为例,利用MODIS-Aqua卫星遥感影像,反演了大气气溶胶光学厚度。同时,选取Landsat8 OLI卫星数据,进行土地覆被分类。在此基础上,利用相关分析、一元线性回归模型和方差分解,对比研究了城市林地和建设用地对大气气溶胶空间分布的影响作用,得出以下结论:1暗像元与插值法的结合适合厦门地区春季气溶胶光学厚度的反演;2建设用地上空气溶胶光学厚度值明显高于林地;3林地对气溶胶空间分布的影响作用强于建设用地。本研究对缓解城市大气污染和改善城市生态环境具有重要参考价值和意义。Analyzing factors that affecting the spatial distribution of aerosol can help researchers to understand the changing mechanism of aerosol, which provides a scientific reference for regulating the atmospheric quality. In this research, taking Xiamen city as a case study, the MODIS-Aqua and Landsat8 OLI images were used in the aerosol optical depth（AOD） inversion and land cover classification, respectively. Then, the impacts of forests and built-up areas on the spatial distribution of aerosol were compared by employing the correlation analysis, the simple linear regression model and the variation partitioning. It is concluded that：（1） the combination of Dark Dense Vegetation（DDV） algorithm and the interpolation method was appropriate for the computation of AOD inversion during the spring season in Xiamen;（2） the AOD for the built-up areas was significantly higher than that for the forests;and（3） the forests had more impacts on the spatial distribution of aerosol than the built-up areas. Results of this study have significances and referential values for the improvement of urban atmospheric quality and ecological environment.

关 键 词：气溶胶光学厚度 土地覆被 空间变化 遥感 厦门 

分 类 号：X513[环境科学与工程—环境工程]