Nitrogen Deposition Drives Response and Recovery in the Context of Precipitation Change and Its Reversal in an Arid Ecosystem

doi:10.1029/2022JG006828

	Nitrogen Deposition Drives Response and Recovery in the Context of Precipitation Change and Its Reversal in an Arid Ecosystem
	Yu, Hongying 1; Liu, Xiaodi 1; Ma, Quanhui 1; Li, Lang 1; Wu, Wenjuan 1; Qi, Miao 1; Li, Yibo 1; Zhang, Feng ; Wang, Yuhui ; Zhou, Guangsheng 2; Xu, Zhenzhu
	2022
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
ISSN	2169-8953
卷号	127 期号:9
摘要	Climatic change profoundly impacts terrestrial ecosystem function and structure. However, it remains unclear how an entire ecosystem responds to precipitation fluctuations in relation to nitrogen (N) deposition, especially in arid ecosystems. A field experiment was conducted in a desert steppe over the course of 4 years to determine plant community and belowground responses to precipitation alteration and a subsequent precipitation regime reversal treatment under increased N addition, with an initial 3-year precipitation regime manipulation period followed by a fourth-year reversal. The aboveground net primary production (ANPP) significantly increased with increased precipitation, particularly at high N levels. However, the precipitation regime reversal treatment in the final year reversed the ANPP effects induced by the previous precipitation alteration. Soil microbial carbon and N content significantly increased with increasing precipitation, whereas the precipitation reversal in the final year partly eliminated the soil microbial effects produced by this previous precipitation alteration. Plant community composition shifted under both the precipitation and N treatments, with a few critical species playing crucial roles. The response ratio (initial treatment vs. control) of ANPP increased with increased precipitation during the first 3 years. Both the resilience (precipitation regime reversal treatment vs. control) and the limitation or promotion index (LPI, precipitation reversal treatment vs. initial treatment) of NPP were relatively high under the initial low precipitation and the final high precipitation regimes. Structural equation modeling in particular illustrated that the precipitation alteration treatments made greater contributions to the response ratio, resilience and LPI of the NPP than did N deposition via either the soil microbial levels or the plant diversity index. We should therefore consider both vegetation productivity and its compositional shift, as well as the associations with soil microbes under contrasting environmental changes, to accurately assess and predict the responses of terrestrial ecosystems to climate change.
关键词	arid ecosystem nitrogen deposition plant community precipitation regimes whole-ecosystem resilience
学科领域	Environmental Sciences ; Geosciences, Multidisciplinary
DOI	10.1029/2022JG006828
收录类别	SCI
语种	英语
WOS关键词	SOIL MICROBIAL COMMUNITIES ; DROUGHT RESISTANCE ; SPECIES RICHNESS ; HEAT WAVES ; PLANT ; RESILIENCE ; GRASSLAND ; CLIMATE ; GROWTH ; IMPACTS
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000853447700001
出版者	AMER GEOPHYSICAL UNION
文献子类	Article
出版地	WASHINGTON
EISSN	2169-8961
资助机构	Strategic Priority Research Program of Chinese Academy of Sciences [XDA26010103] ; National Natural Science Foundation of China [41775108] ; China Special Fund for Meteorological Research in the Public Interest (Major projects) [GYHY201506001-3]
作者邮箱	zhougs@cma.gov.cn ; xuzz@ibcas.ac.cn
引用统计	被引频次：4[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/2S10CLM1/28924
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Inst Bot, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.China Meteorol Adm, State Key Lab Severe Weather, Chinese Acad Meteorol Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Yu, Hongying,Liu, Xiaodi,Ma, Quanhui,et al. Nitrogen Deposition Drives Response and Recovery in the Context of Precipitation Change and Its Reversal in an Arid Ecosystem[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2022,127(9).
APA	Yu, Hongying.,Liu, Xiaodi.,Ma, Quanhui.,Li, Lang.,Wu, Wenjuan.,...&Xu, Zhenzhu.(2022).Nitrogen Deposition Drives Response and Recovery in the Context of Precipitation Change and Its Reversal in an Arid Ecosystem.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,127(9).
MLA	Yu, Hongying,et al."Nitrogen Deposition Drives Response and Recovery in the Context of Precipitation Change and Its Reversal in an Arid Ecosystem".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 127.9(2022).

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