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

doi:10.1016/j.scitotenv.2021.148264

	Winter nitrogen enrichment does not alter the sensitivity of plant communities to precipitation in a semiarid grassland
	Zhang, Yuqiu 1; Ren, Zhengru 1; Zhang, Yunhai
	2021
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
卷号	790
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.
关键词	Aboveground net primary productivity (ANPP) Inner Mongolia Nitrogen deposition Seasonal nitrogen enrichment Species richness Steppe
学科领域	Environmental Sciences
DOI	10.1016/j.scitotenv.2021.148264
收录类别	SCI
语种	英语
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)
WOS记录号	WOS:000684998900007
出版者	ELSEVIER
文献子类	Article
出版地	AMSTERDAM
EISSN	1879-1026
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]
作者邮箱	zhangyh670@ibcas.ac.cn
引用统计	被引频次：5[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/2S10CLM1/26635
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).

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
S00489697_S004896972（1766KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览请求全文