Elevated ozone decreases the multifunctionality of belowground ecosystems

doi:10.1111/gcb.16507

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	Elevated ozone decreases the multifunctionality of belowground ecosystems
	Gu, Xian 2; Wang, Tianzuo ; Li, Caihong
刊名	GLOBAL CHANGE BIOLOGY
	2023
卷号	29 期号:3 页码:890-908
关键词	meta-analysis multifunctionality ozone pollution roots soil microbes
ISSN号	1354-1013
DOI	10.1111/gcb.16507
文献子类	Article
英文摘要	Elevated tropospheric ozone (O-3) affects the allocation of biomass aboveground and belowground and influences terrestrial ecosystem functions. However, how belowground functions respond to elevated O-3 concentrations ([O-3]) remains unclear at the global scale. Here, we conducted a detailed synthesis of belowground functioning responses to elevated [O-3] by performing a meta-analysis of 2395 paired observations from 222 publications. We found that elevated [O-3] significantly reduced the primary productivity of roots by 19.8%, 16.3%, and 26.9% for crops, trees and grasses, respectively. Elevated [O-3] strongly decreased the root/shoot ratio by 11.3% for crops and by 4.9% for trees, which indicated that roots were highly sensitive to O-3. Elevated [O-3] impacted carbon and nitrogen cycling in croplands, as evidenced by decreased dissolved organic carbon, microbial biomass carbon, total soil nitrogen, ammonium nitrogen, microbial biomass nitrogen, and nitrification rates in association with increased nitrate nitrogen and denitrification rates. Elevated [O-3] significantly decreased fungal phospholipid fatty acids in croplands, which suggested that O-3 altered the microbial community and composition. The responses of belowground functions to elevated [O-3] were modified by experimental methods, root environments, and additional global change factors. Therefore, these factors should be considered to avoid the underestimation or overestimation of the impacts of elevated [O-3] on belowground functioning. The significant negative relationships between O-3-treated intensity and the multifunctionality index for croplands, forests, and grasslands implied that elevated [O-3] decreases belowground ecosystem multifunctionality.
学科主题	Biodiversity Conservation ; Ecology ; Environmental Sciences
电子版国际标准刊号	1365-2486
出版地	HOBOKEN
WOS关键词	SOIL MICROBIAL COMMUNITY ; BEECH FAGUS-SYLVATICA ; TRITICUM-AESTIVUM L. ; SCOTS PINE-SEEDLINGS ; LEAF GAS-EXCHANGE ; ATMOSPHERIC CARBON-DIOXIDE ; YANGTZE-RIVER DELTA ; SPRUCE PICEA-ABIES ; QUERCUS-RUBRA L ; TROPOSPHERIC OZONE
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	WILEY
WOS记录号	WOS:000879604400001
资助机构	National Natural Science Foundation of China [31830011, 31400335, 32070351] ; Scientific Research Project of the Natural Science Foundation of Hebei Province of China [H2022423004]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/29124]
专题	植被与环境变化国家重点实验室
作者单位	1.Hebei Univ Chinese Med, Coll Pharm, Shijiazhuang, Hebei, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Gu, Xian,Wang, Tianzuo,Li, Caihong. Elevated ozone decreases the multifunctionality of belowground ecosystems[J]. GLOBAL CHANGE BIOLOGY,2023,29(3):890-908.
APA	Gu, Xian,Wang, Tianzuo,&Li, Caihong.(2023).Elevated ozone decreases the multifunctionality of belowground ecosystems.GLOBAL CHANGE BIOLOGY,29(3),890-908.
MLA	Gu, Xian,et al."Elevated ozone decreases the multifunctionality of belowground ecosystems".GLOBAL CHANGE BIOLOGY 29.3(2023):890-908.