Interactive effects of air pollutants and atmospheric moisture stress on aspen growth and photosynthesis along an urban-rural gradient

doi:10.1016/j.envpol.2020.114076

	Interactive effects of air pollutants and atmospheric moisture stress on aspen growth and photosynthesis along an urban-rural gradient
	Wang, Zhenhua 1; Wang, Chengzhang 1; Wang, Bin 1; Wang, Xin ; Li, Jing 1; Wu, Jin 2; Liu, Lingli1
	2020
发表期刊	ENVIRONMENTAL POLLUTION
ISSN	0269-7491
卷号	260
摘要	Atmospheric pollution could significantly alter tree growth independently and synergistically with meteorological conditions. North China offers a natural experiment for studying how plant growth responds to air pollution under different meteorological conditions, where rapid economic growth has led to severe air pollution and climate changes increase drought stress. Using a single aspen clone (Populus euramericana Neva.) as a 'phytometer', we conducted three experiments to monitor aspen leaf photosynthesis and stem growth during in situ exposure to atmospheric pollutants along the urban-rural gradient around Beijing. We used stepwise model selection to select the best multiple linear model, and we used binned regression to estimate the effects of air pollutants, atmospheric moisture stress and their interactions on aspen leaf photosynthesis and growth. Our results indicated that ozone (O-3) and vapor pressure deficit (VPD) inhibited leaf photosynthesis and stem growth. The interactive effect of O-3 and VPD resulted in a synergistic response: as the concentration of O-3 increased, the negative impact of VPD on leaf photosynthesis and stem growth became more severe. We also found that nitrogen (N) deposition had a positive effect on stem growth, which may have been caused by an increase in canopy N uptake, although this hypothesis needs to be confirmed by further studies. The positive impact of aerosol loading may be due to diffuse radiation fertilization effects. Given the decline in aerosols and N deposition amidst increases in O-3 concentration and drought risk, the negative effects of atmospheric pollution on tree growth may be aggravated in North China. In addition, the interaction between O-3 and VPD may lead to a further reduction in ecosystem productivity. (C) 2020 Elsevier Ltd. All rights reserved.
关键词	Stem growth Ozone Nitrogen deposition Aerosol VPD
学科领域	Environmental Sciences
DOI	10.1016/j.envpol.2020.114076
收录类别	SCI
语种	英语
WOS关键词	VAPOR-PRESSURE DEFICIT ; NET PRIMARY PRODUCTIVITY ; CLIMATE-CHANGE ; CARBON SEQUESTRATION ; NITROGEN DEPOSITION ; DIFFUSE-RADIATION ; TREE GROWTH ; OZONE ; FOREST ; WATER
WOS研究方向	Environmental Sciences & Ecology
WOS记录号	WOS:000528537600035
出版者	ELSEVIER SCI LTD
文献子类	Article
出版地	OXFORD
EISSN	1873-6424
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31670478, 31600389, 31522011] ; Chinese National Key Development Program for Basic Research [2017YFC0503902]
作者邮箱	lingli.liu@ibcas.ac.cn
引用统计	被引频次：12[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/21791
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Hong Kong, Sch Biol Sci, Pokfulam, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Wang, Zhenhua,Wang, Chengzhang,Wang, Bin,et al. Interactive effects of air pollutants and atmospheric moisture stress on aspen growth and photosynthesis along an urban-rural gradient[J]. ENVIRONMENTAL POLLUTION,2020,260.
APA	Wang, Zhenhua.,Wang, Chengzhang.,Wang, Bin.,Wang, Xin.,Li, Jing.,...&Liu, Lingli.(2020).Interactive effects of air pollutants and atmospheric moisture stress on aspen growth and photosynthesis along an urban-rural gradient.ENVIRONMENTAL POLLUTION,260.
MLA	Wang, Zhenhua,et al."Interactive effects of air pollutants and atmospheric moisture stress on aspen growth and photosynthesis along an urban-rural gradient".ENVIRONMENTAL POLLUTION 260(2020).

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