[1]李 健,全智雯,周书贵,等.黄河流域气溶胶时空异质性及影响因素分析[J].郑州大学学报(工学版),2024,45(03):29-37.[doi:10. 13705 / j. issn. 1671-6833. 2024. 03. 014]
　LI Jian,QUAN Zhiwen,ZHOU Shugui,et al.Spatio-temporal Heterogeneity and Driving Factors of AOD in the Yellow River Basin[J].Journal of Zhengzhou University (Engineering Science),2024,45(03):29-37.[doi:10. 13705 / j. issn. 1671-6833. 2024. 03. 014]
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黄河流域气溶胶时空异质性及影响因素分析()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
45
期数:
2024年03期
页码:
29-37
栏目:
出版日期:
2024-04-20

文章信息/Info

Title:
Spatio-temporal Heterogeneity and Driving Factors of AOD in the Yellow River Basin
文章编号:
1671-6833(2024)03-0029-09
作者:
李 健1 ;  全智雯2 ;  周书贵1 ;  马玉荣2; 3
1. 郑州大学 地球科学与技术学院,河南 郑州 450001;2. 郑州大学 水利与交通学院,河南 郑州 450001;3. 郑州大 学 图书馆,河南 郑州 450001
Author(s):
LI Jian 1; QUAN Zhiwen 2; ZHOU Shugui 1; MA Yurong 2; 3
1. School of Geo-Science & Technology, Zhengzhou University, Zhengzhou 450001, China; 2. School of Water Conservancy and Transportation, Zhengzhou University, Zhengzhou 450001, China; 3. Library, Zhengzhou University, Zhengzhou 450001, China
关键词:
MODIS;  气溶胶光学厚度;  时空分布;  影响因素;  黄河流域
Keywords:
MODIS;  AOD;  spatio-temporal pattern;  influencing factors;  the Yellow River Basin
分类号:
X513
DOI:
10. 13705 / j. issn. 1671-6833. 2024. 03. 014
文献标志码:
A
摘要:
基于大尺度黄河流域的长时序气溶胶光学厚度( AOD) 的分析较少,且因素分析也集中在气象条件方面, 针对该问题,搜集了 MODIS 气溶胶产品数据,基于地理加权回归模型( GWR) 分析了整个黄河流域的时空变化特 征,定量探讨了地理环境、自然气象和社会经济对 AOD 的综合影响。 结果表明:黄河流域 AOD 整体为下降趋势,由 2001 年的 0. 38 下降至 2020 年的 0. 22。 AOD 的变化具有明显的季节性,春夏季高于秋冬季,这可能是气温、大气扩 散条件和植被覆盖等因素共同作用的结果;从空间分布角度来看,研究区 AOD 为自西向东呈现梯度递增分布,与 流域 DEM 分布趋势相反,说明地形与气溶胶之间有密切关联。 基于 GWR 模型的研究结果表明:地形植被对整个 黄河流域 AOD 影响程度最大,其次为社会经济、自然气象。 针对黄河流域内重点城市的研究结果表明:不同城市 气溶胶光学厚度的月际变化有较大差异,流域上游城市西宁、银川和包头的 AOD 水平较低,冬季 AOD 最高,夏季 AOD 最低,而中下游城市夏季 AOD 最高,冬季最低。
Abstract:
Studies on the long-term aerosol optical depth ( AOD) based on the large-scale Yellow River basin was limited, and most of them only focused on meteorological conditions. In this study, the MODIS aerosol optical depth ( AOD) products was collected, and then the temporal and spatial pattern of AOD and comprehensively quantified the impact of geographical environment, natural weather and social economy on AOD in the Yellow River Basin were analyzed based on the geographically weighted regression (GWR) . The results showed that the AOD exhibited a downward trend in the Yellow River Basin. The AOD value decreased from 0. 38 in 2001 to 0. 22 in 2022. Moreover, the distribution of AOD also showed obvious seasonal differences that AOD values in spring and summer were higher than in autumn and winter. This wight be the result of a combination of factors such as temperature, atmospheric diffusion conditions, and vegetation cover. From the perspective of spatial distribution, the AOD in the study area gradually increased from west to east. This trend was opposite to the distribution of DEM in the Yellow River Basin, indicating a close correlation between terrain and aerosols. The analysis of influencing factors based on GWR model showed that, for the entire Yellow River Basin, terrain and vegetation had the greatest impact on AOD in the Yellow River Basin, followed by socio-economic factors and natural meteorology. Prominent cities in the Yellow River Basin were also analyzed in the study, and the results showed that the inter-annual variation of AOD in different cities in the study area was quite different. The AOD values of Xining, Yinchuan and Baotou in the upper reaches of the Yellow River Basin showed a low level, with the highest value appearing in winter and the lowest value appearing in summer, while the AOD values of cities in the middle and lower reaches were the highest in summer and the lowest in winter.

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更新日期/Last Update: 2024-04-29