气候变化领域集成服务门户(CCPortal): Persistent organic pollutant cycling in forests

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DOI	10.1038/s43017-020-00137-5
	Persistent organic pollutant cycling in forests
	Gong, Ping; Xu, Hong; Wang, Chuanfei; Chen, Yan; Guo, Liping; Wang, Xiaoping
通讯作者	Wang, XP (通讯作者)
发表日期	2021
EISSN	2662-138X
起始页码	182
结束页码	197
卷号	2 期号:3
英文摘要	Owing to their toxicity, persistence and capacity for long-range atmospheric transport, persistent organic pollutants (POPs) are internationally regulated. However, forests can uptake and sequester POPs from the atmosphere, acting as a filter as they are transported to the poles as part of the so-called grasshopper effect. In this Review, we summarize POP (and polyaromatic hydrocarbon) cycling and distribution in forests, and discuss the environmental factors that impact POP fates. Pollutants are taken up by foliage and transported to the forest floor, where they can be stored in the litter layer or leach further into the soil. Typically, soil organic carbon content, temperature and latitude are the most important factors influencing POP distribution and storage, with boreal and tropical forests accumulating the greatest POP concentrations. Forest fires and deforestation, however, threaten the ability of forests to sequester POPs, with the former also anticipated to increase production of POPs and polyaromatic hydrocarbons through combustion. In order to better estimate the burden of POPs in the environment, greater large-scale and long-term observations are required in all forests, particularly in tropical regions and the Southern Hemisphere. Persistent organic pollutants are transported globally, but there is evidence that forests act as a filter by sequestering these pollutants. This Review examines the role of forests in persistent organic pollutant cycling, including their storage in foliage and soil, and the impacts of global change. Key pointsThe forest filter effect describes the uptake of atmospheric persistent organic pollutants (POPs) by foliage and their transport to the forest floor via litterfall, throughfall and the erosion of wax and particles.The global forest can store more than 100Gg of POPs, delaying their long-range atmospheric transport.POP and polyaromatic hydrocarbon concentrations tend to be higher in European forest soils than on other continents.Deforestation and afforestation caused by human activities and climate change can substantially influence the terrestrial stock of POPs.International strategies and regional and/or global models of POP fate should consider the impacts of climate change and forest fires on POPs cycling.
关键词	POLYCYCLIC AROMATIC-HYDROCARBONS LONG-RANGE TRANSPORT POLYBROMINATED DIPHENYL ETHERS SOUTHEASTERN TIBETAN PLATEAU LAND-USE CHANGE POLYCHLORINATED-BIPHENYLS ORGANOCHLORINE PESTICIDES ATMOSPHERIC DEPOSITION PINE NEEDLES MOUNTAIN AIR
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary
WOS记录号	WOS:000671875300007
来源期刊	NATURE REVIEWS EARTH & ENVIRONMENT
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260196
推荐引用方式 GB/T 7714	Gong, Ping,Xu, Hong,Wang, Chuanfei,et al. Persistent organic pollutant cycling in forests[J]. 中国科学院青藏高原研究所,2021,2(3).
APA	Gong, Ping,Xu, Hong,Wang, Chuanfei,Chen, Yan,Guo, Liping,&Wang, Xiaoping.(2021).Persistent organic pollutant cycling in forests.NATURE REVIEWS EARTH & ENVIRONMENT,2(3).
MLA	Gong, Ping,et al."Persistent organic pollutant cycling in forests".NATURE REVIEWS EARTH & ENVIRONMENT 2.3(2021).