兰州大学机构库 >草地农业科技学院
Contrasting effects of nitrogen enrichment on ecosystem temporal stability before and after nitrogen saturation in a subalpine grassland
Li, WB(李伟斌); Gan, Xiaoling; Ye, Xiaoshuang; Jiang, Yuan; Zhao, CY(赵传燕)
2023-10-01
Online publication date2023-06
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT   Impact Factor & Quartile
ISSN0048-9697
Volume893
page numbers8
AbstractIncreased atmospheric nitrogen deposition generally increases plant biomass production until reaching soil N saturation, which could increase the uncertainty of changes in ecosystem temporal stability and their mechanisms. Yet, the response of ecosystem stability to N enrichment and their underlying mechanisms are uncertain, especially when N saturation reached. Here, we conducted a multi-level N addition (0, 2, 5, 10, 15, 25, and 50 g N m−2 year−1; high added rates reached N saturation) experiment from 2018 to 2022 to estimate the effect of simulated N deposition on ecosystem biomass stability in a subalpine grassland located on the Qilian mountain of north-eastern Tibetan Plateau. Our results show that community biomass production increased with an increase in N addition in the first N addition experiment year, but decreased with increase in N addition rates after N saturation in subsequent years. We first find a negative quadratic relationship between biomass temporal stability and added N rate, whereby above N saturation threshold (5 g N m−2 year−1 at this site), increases in N addition reduces biomass temporal stability. The changes in biomass temporal stability are largely determined by dominant species stability, species asynchronous, and species richness. These results provide a better understanding of N-induced effect on ecosystem stability and their underlying mechanisms, which is important to evaluate functioning and services of ecological systems under global change scenarios. © 2023 Elsevier B.V.
KeywordEcosystems Nitrogen Stability Community stability Dominant species Dominant species stability Ecosystem stability N-saturation Nitrogen deposition Nitrogen enrichment Nitrogen saturation Species asynchronoi Temporal stability
PublisherElsevier B.V.
DOI10.1016/j.scitotenv.2023.164535
Indexed ByEI ; SCIE
Language英语
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:001032898700001
EI Accession Number20232714342152
EI KeywordsBiomass
EI Classification Number454.3 Ecology and Ecosystems ; 804 Chemical Products Generally
Original Document TypeJournal article (JA)
PMID 37269986
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/532357
Collection草地农业科技学院
Corresponding AuthorLi, Weibin
Affiliation
State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou; 730020, China
First Author AffilicationCollege of Pastoral Agriculture Science and Technology
Corresponding Author AffilicationCollege of Pastoral Agriculture Science and Technology
Recommended Citation
GB/T 7714
Li, Weibin,Gan, Xiaoling,Ye, Xiaoshuang,et al. Contrasting effects of nitrogen enrichment on ecosystem temporal stability before and after nitrogen saturation in a subalpine grassland[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2023,893.
APA Li, Weibin,Gan, Xiaoling,Ye, Xiaoshuang,Jiang, Yuan,&Zhao, Chuanyan.(2023).Contrasting effects of nitrogen enrichment on ecosystem temporal stability before and after nitrogen saturation in a subalpine grassland.SCIENCE OF THE TOTAL ENVIRONMENT,893.
MLA Li, Weibin,et al."Contrasting effects of nitrogen enrichment on ecosystem temporal stability before and after nitrogen saturation in a subalpine grassland".SCIENCE OF THE TOTAL ENVIRONMENT 893(2023).
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