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	中亚五国气溶胶光学厚度时空分布特征研究
其他题名	Spatiotemporal distribution of aerosol optical depth in the five Central Asian countries
	牛林芝; 王旭红; 韩海青; 梁秀娟; 蒋晓辉; 谭竹婷; 刘状
来源期刊	环境科学学报
ISSN	0253-2468
出版年	2021
卷号	41 期号:2 页码:321-333
中文摘要	气溶胶时空变化是影响气溶胶气候效应不确定性的主要因素之一.在生态环境脆弱的中亚五国(哈萨克斯坦、乌兹别克斯坦、土库曼斯坦、吉尔吉斯斯坦和塔吉克斯坦)研究气溶胶光学厚度( Aerosol Optical Depth,AOD)的时空变化对中亚地区及全球生态环境和气候变化具有重要意义.基于20022019年MODIS 04_L2气溶胶产品数据集,利用标准差椭圆( Standard Deviation Ellipse,SDE) 、加权回归的季节趋势分解( Seasonal Trend Decomposition Procedure based on Loess,STL)和奇异值分解( Singular Value Decomposition,SVD)等方法,在时间和空间两个维度上揭示了中亚五国AOD和气溶胶细模态比例( Aerosol Fine Mode Fraction,FMF)的时空演变特征,以及AOD对气象因子和土地利用/土地覆被变化( Land Use /Cover Change,LUCC)的响应.结果表明: ①中亚五国AOD分布呈现出显著的空间异质性,高值区主要集中于咸海区域和费尔干纳盆地,低值区主要分布于海拔相对较高的山区和丘陵; AOD年平均中心在2009年之前分布于中亚东南部,受咸海盐尘的影响,2010年之后偏向于西北部向咸海附近移动.②20022019年中亚五国AOD 年均值整体呈先增长后下降的态势,2 012年达到最大值.③中亚地区AOD的变化受气温、降水、风速的共同影响,AOD与气温的空间变化特征呈基本一致的态势,但与降水和风速存在一定差异; 不同土地覆被区对AOD的影响差异显著,城市建设用地、裸地及水域是AOD高值分布区,低值分布于郁闭灌木丛和混杂林等植被覆盖度高的土地利用/土地覆被区. ④气溶胶细模态比例( FMF)空间分布格局由自然和人为因素共同作用,呈现出咸海和沙漠区域附近以粗模态气溶胶为主,人口密集区和工业区以细模态粒子占主导地位.
英文摘要	Spatiotemporal variation of aerosol is one of the main factors that causes the uncertainty of aerosol climate effects. Thus,it is of great significance to study the spatiotemporal variations of aerosol optical depth ( AOD) in the five Central Asian countries within their fragile ecological environment,concerning regional and global ecological environment and climate change. Based on 20022019 MODIS 04_L2 aerosol products,with standard deviation ellipse ( SDE) used,seasonal trend decomposition procedure based on loess ( STL) and singular value decomposition ( SVD) method revealed the spatiotemporal evolution characteristics of aerosol optical depth ( AOD) and aerosol fine mode fraction ( FMF) in the five Central Asian countries in both spatial and temporal dimensions. Meantime,the response of AOD to meteorological factors and land use / cover change ( LUCC) were analyzed. The conclusions are as follows: ①The distribution of AOD in the five Central Asian countries shows significant spatial heterogeneity. The high value areas are mainly concentrated in the Aral Sea and Fergana Valley,and the low value areas are mainly distributed in the mountains and hills with relatively high altitude; the annual average center was mainly distributed in the southeast of Central Asia before 2009,yet it was towards the northwestern Central Asian and gradually moving to the Aral Sea after 2010,which was affected by salt dust in the Aral Sea; ②From the perspective of time,the annual average value of AOD showed a trend of first increase and then decrease during 2002 to 2019,reaching its maximum in 2012. ③The relationship between AOD and meteorological factors,LUCC respectively showed that AOD was affected by the combination of temperature,precipitation and wind speed,spatial and temporal distribution pattern of AOD and temperature were basically consistent,but that of AOD,precipitation and wind speed appeared some differences in central Asia; The differences in responses between different land cover areas and AOD are significant. Urban construction land,bare land and water area were the high value distribution areas of AOD; while the regions dominated by low value of AOD were high vegetation coverage areas,such as closed shrub lands and mixed forests. ④The spatial distribution pattern of aerosol fine mode proportion ( FMF) was a combination of natural and human factors,which shows that coarse mode aerosol is the main form near the Aral Sea and desert areas,and fine mode particles were the dominant in densely populated areas and industrial areas.
中文关键词	气溶胶光学厚度( AOD) ; 气溶胶细模态比例( FMF) ; 时空分布 ; 中亚五国
英文关键词	MODIS MODIS aerosol optical depth( AOD) aerosol fine mode proportion( FMF) spatiotemporal distribution the five central Asian countries
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Environmental Sciences & Ecology
CSCD记录号	CSCD:6897372
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/354338
作者单位	牛林芝, 西北大学城市与环境学院;;陕西省地表系统与环境承载力重点实验室, ;;陕西省地表系统与环境承载力重点实验室, 西安;;西安, ;; 710127;;710127. 王旭红, 西北大学城市与环境学院;;陕西省地表系统与环境承载力重点实验室, ;;陕西省地表系统与环境承载力重点实验室, 西安;;西安, ;; 710127;;710127. 韩海青, 西北大学城市与环境学院;;陕西省地表系统与环境承载力重点实验室, ;;陕西省地表系统与环境承载力重点实验室, 西安;;西安, ;; 710127;;710127. 梁秀娟, 西北大学城市与环境学院;;陕西省地表系统与环境承载力重点实验室, ;;陕西省地表系统与环境承载力重点实验室, 西安;;西安, ;; 710127;;710127. 蒋晓辉, 西北大学城市与环境学院;;陕西省地表系统与环境承载力重点实验室, ;;陕西省地表系统与环境承载力重点实验室, 西安;;西安, ;; 710127;;710127. 刘状, 西北大学城市与环境学院;;陕西省地表系统与环境承载力重点实验室, ;;陕西省地表系统与环境承载力重点实验室, 西安;;西安, ;; 710127;;710127. 谭竹婷, 湘潭大学土木工程与力学学院, 湘潭, 湖南 411100, 中国.
推荐引用方式 GB/T 7714	牛林芝,王旭红,韩海青,等. 中亚五国气溶胶光学厚度时空分布特征研究[J],2021,41(2):321-333.
APA	牛林芝.,王旭红.,韩海青.,梁秀娟.,蒋晓辉.,...&刘状.(2021).中亚五国气溶胶光学厚度时空分布特征研究.环境科学学报,41(2),321-333.
MLA	牛林芝,et al."中亚五国气溶胶光学厚度时空分布特征研究".环境科学学报 41.2(2021):321-333.