Peat records of atmospheric environmental changes in China: A brief review and recommendations for future research perspectives
Peat records of atmospheric environmental changes in China: A brief review and recommendations for future research perspectives
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DOI：
10.1016/j.catena.2023.107234
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发表时间：
2023-08
期刊：
影响因子：
6.2
通讯作者：
K. Bao;Ting Liu;Minqi Chen;Zhanyi Lin;Jing Zhong;Bigyan Neupane
中科院分区：
文献类型：
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作者：
K. Bao;Ting Liu;Minqi Chen;Zhanyi Lin;Jing Zhong;Bigyan Neupane
营养泥炭沼泽的广泛特征是依赖降水的湿地，其中养分供应来自大气沉降（包括降雪和空气尘埃）。这些沼泽作为活跃的信息存储系统，不断记录大气环境的变化。在中国，泥炭记录显示可以追溯到工业化时代的开始，并显示出环境污染物的增加，在过去的50年里出现了前所未有的增加。在中国东北地区，长距离高空风携带来自蒙古和中国西部的沙尘，而在中国西南地区，沙尘主要来自沙漠、黄土高原和邻近的青藏高原，贡献率分别为45%、22%和33%。人类活动（冶炼和大量燃煤）的增加导致 PTE 排放量增加，并在工业革命期间达到顶峰。 1949年新中国成立后，燃烧产生的污染物排放急剧增加，并在20世纪80年代加速。然而，一些泥炭核心在过去二十年中出现下降，反映出严格的控制措施导致生物质燃烧和煤炭消耗的减少。本文简要总结了中国泥炭地的年代测定及其中几种环境污染物及其来源的沉积档案。它还强调了一些需要改进的领域，并建议对泥炭档案进行进一步的研究视角，以提高我们对大气环境变化的理解。
Ombrotrophic peat bogs are widely characterized by precipitation-dependent wetlands where nutrient supply is derived from atmospheric deposition (including snowfall and air dust). These bogs serve as active information storage systems, continuously recording atmospheric environmental changes. In China, peat record show dating back to the commencement of industrialization era and show an increase in environmental pollutants, with an unprecedented increase over the last 50 years. In NE China, long-distance high-altitude winds carry dust from Mongolia and Western China, whereas in SW China, dust mainly comes from the desert, Loess Plateau, and adjacent Qinghai Tibet Plateau, with contribution rates of 45%, 22%, and 33%, respectively. Increased anthropogenic activities (smelting and extensive coal burning) led to increased PTEs emissions, which peaked during the Industrial Revolution. After the foundation of New China in 1949, combustion-generated pollutant emissions increased sharply and accelerated during the 1980s. However, some peat cores show decline in the last two decades, reflecting strict control measures that led to reductions in biomass burning and coal consumption. This review briefly summarizes the dating of peatlands and their depositional archives of several environmental pollutants and their sources in China. It also highlights some areas of improvement and recommends further research perspectives on peat archives to improve our understanding of atmospheric environment changes.