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Winter nitrogen enrichment does not alter the sensitivity of plant communities to precipitation in a semiarid grassland

文献类型：期刊论文

作者Zhang, Yuqiu1; Ren, Zhengru1; Zhang, Yunhai
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2021
卷号790
关键词Aboveground net primary productivity (ANPP) Inner Mongolia Nitrogen deposition Seasonal nitrogen enrichment Species richness Steppe
ISSN号0048-9697
DOI10.1016/j.scitotenv.2021.148264
文献子类Article
英文摘要Nitrogen (N) deposition often promotes aboveground net primary productivity (ANPP), but has adverse effects on terrestrial ecosystem biodiversity. It is unclear, however, whether biomass production and biodiversity are equally altered by seasonal N enrichment, as there is a temporal pattern to atmospheric N deposition. By adding N in autumn, winter, or growing season from October 2014 to May 2019 in a temperate grassland in China, we found that N addition promoted peak plant community ANPP, but tended to decrease plant richness. Regardless of seasonal N additions, precipitation was positively correlated with plant community ANPP, confirming that precipitation is the primary limiting factor in this semiarid grassland. Unexpectedly, N addition in autumn or growing season, but not in winter, increased the sensitivity of plant communities to precipitation (i.e., the slope of the positive relationship between community ANPP and precipitation), indicating that precipitation determines the influence of seasonal N enrichment on plant community biomass production. These findings suggest that previous studies in which N was added in a single season, e.g., the growing season, have likely overestimated the effects of N deposition on ecosystem primary productivity, especially during wet years. This study illustrates that multi-season N addition in agreement with predicted seasonal patterns of N deposition needs to be evaluated to precisely assess ecosystem responses. (c) 2021 Elsevier B.V. All rights reserved.
学科主题Environmental Sciences
出版地AMSTERDAM
电子版国际标准刊号1879-1026
WOS关键词NET PRIMARY PRODUCTIVITY ; ACQUISITION STRATEGIES ; ECOSYSTEM STABILITY ; NUTRIENT ENRICHMENT ; BIODIVERSITY LOSS ; SPECIES RICHNESS ; LEYMUS-CHINENSIS ; CO-LIMITATION ; DEPOSITION ; WATER
WOS研究方向Science Citation Index Expanded (SCI-EXPANDED)
语种英语
WOS记录号WOS:000684998900007
出版者ELSEVIER
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences [XDA26020101] ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences [ZDBS-LY-DQC034] ; National Natural Science Foundation of China [32071603]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/26635]  
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, Yuquan Rd, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Yuqiu,Ren, Zhengru,Zhang, Yunhai. Winter nitrogen enrichment does not alter the sensitivity of plant communities to precipitation in a semiarid grassland[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,790.
APA Zhang, Yuqiu,Ren, Zhengru,&Zhang, Yunhai.(2021).Winter nitrogen enrichment does not alter the sensitivity of plant communities to precipitation in a semiarid grassland.SCIENCE OF THE TOTAL ENVIRONMENT,790.
MLA Zhang, Yuqiu,et al."Winter nitrogen enrichment does not alter the sensitivity of plant communities to precipitation in a semiarid grassland".SCIENCE OF THE TOTAL ENVIRONMENT 790(2021).

入库方式： OAI收割

来源：植物研究所

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