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- Title
New Insights Into Multi‐Component Atmospheric Wet Deposition Across China: A Multidimensional Analysis.
- Authors
Zhang, Qiongyu; Zhu, Jianxing; Wang, Qiufeng; Xu, Li; Li, Mingxu; Li, Ying; Liu, CongCong; He, Nianpeng
- Abstract
Atmospheric wet deposition has attracted much attention because of its removal function of aerosol particles and impact on ecosystem. It is a complex multi‐component process due to various pollutants emission sources and reaction processes. However, traditional studies mainly focused on single components, ignoring the internal relationships and the comprehensive deposition level; this has hindered the comprehensive understanding and the assessment of ecological effects of deposition. Here, based on the monitoring of wet deposition across 52 stations during 2013–2018 in China, we used two novel multidimensional methods to investigate multi‐component atmospheric wet deposition: network analysis and comprehensive index. Network analysis is a new method that can help better explore the overall relationship between multiple components. We found that due to the improvement of human development level and the diversification of energy sources, the air pollutants sources became more diversified, which reduced the relationship between different deposition components and made the multi‐component deposition network looser. Comprehensive index is a method to realize the fusion of multiple parameters, which can explore the comprehensive effect of multi‐component atmospheric deposition on ecosystems. The high deposition comprehensive index occurred in the central and south China, and mainly influenced by human activities (energy consumption, fertilization, and vehicle ownership) and precipitation, which means that ecosystems in these regions are exposed to greater impacts by wet deposition. The findings provide new insights into understanding multi‐component atmospheric deposition and its comprehensive ecological effects. Plain Language Summary: Atmospheric wet deposition can not only remove aerosol particles, but also is an important way to input elements into the ecosystem. Systematic understanding of it can help us formulate effective environmental strategies and evaluate its ecological effects. It is complex, multi‐component process involving multiple emission sources and atmospheric reactions. However, studies have traditionally only examined single components of this process, and as such may have missed relationships and inter‐effects. In this study, based on monitoring of wet deposition across 52 stations in China, we analyzed the fluxes and spatial variations of 16 components and explored their internal relationships network (DRNs), while developing a comprehensive index (DCIs) using novel multi‐dimensional method. We found that the DRNs and DCIs both showed different spatial variation. The former were mainly affected by the energy structure and the level of human development, while the latter were affected by climate factors and the intensity of human activity. Our findings provide a new perspective for understanding multi‐component atmospheric deposition, and potential suggestions for evaluating its comprehensive ecological effects. Key Points: Multi‐component wet deposition was first quantified by multidimensional approachDiversified energy structures weakened deposition relationship networkHuman activity and climate influenced deposition comprehensive index
- Subjects
CHINA; ATMOSPHERIC deposition; ATMOSPHERIC nitrogen; ECOLOGICAL assessment; SPATIAL variation; ENERGY consumption; AIR pollutants
- Publication
Earth's Future, 2022, Vol 10, Issue 11, p1
- ISSN
2328-4277
- Publication type
Article
- DOI
10.1029/2021EF002588