干旱区生态环境知识资源中心(Arid): Aridity stimulates responses of root production and turnover to warming but suppresses the responses to nitrogen addition in temperate grasslands of northern China

Arid

DOI	10.1016/j.scitotenv.2020.142018
	Aridity stimulates responses of root production and turnover to warming but suppresses the responses to nitrogen addition in temperate grasslands of northern China
	Yan, Chuang; Yuan, Zhiyou; Liu, Zunchi; Zhang, Jingjing; Liu, Kai; Shi, Xinrong; Lock, T. Ryan; Kallenbach, Robert L.
通讯作者	Yuan, ZY
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	753
英文摘要	Global warming and nitrogen (N) deposition are known to affect root dynamics in grasslands. However, previous studies were based only on a single ecosystem type, so it is unclear how warming and N addition affect root traits (root biomass, root-shoot ratio, root production and turnover) along the aridity gradient. In this study, we conducted an experiment to determine the effects of warming and N addition on root traits in desert, typical, and meadow grasslands in northern China, where the aridity gradually decreases from west to east across the region. Warming increased root-shoot ratio in dry year due to decline in soil water, but had a downward trend in root production and turnover in all three grasslands. N addition decreased root-shoot ratio in humid year due to increase in soil N, whereas did not significantly affect root production in any grasslands and increased root turnover in desert and meadow grasslands rather than typical grassland. Warming combined with N addition had negatively additive effects on root turnover in typical and meadow grasslands rather than desert grassland. N addition-induced changes in root biomass and root-shoot ratio were negatively affected by aridity in dry year. Aridity positively affected responses of root production and turnover to warming but negatively affected those responses to N addition. However, root-shoot ratio, root production and turnover under warming combined with N addition were not affected by aridity. Our results suggest that warming suppresses root carbon (C) input but N addition may exacerbate it in temperate grasslands, and warming combined with N addition suppresses it only in wet grasslands. Aridity promotes root C input under warming but suppresses it under N addition. However, aridity may little affect soil C and nutrient dynamics under global warming combined with N deposition in temperate grasslands in the future. (C) 2020 Elsevier B.V. All rights reserved.
英文关键词	Aridity gradient Experimental warming Grassland type Nitrogen addition
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000588616700099
WOS关键词	CARBON ALLOCATION ; LEYMUS-CHINENSIS ; ATMOSPHERIC CO2 ; TYPICAL STEPPE ; CLIMATE-CHANGE ; SOIL-NITROGEN ; GLOBAL CHANGE ; ELEVATED CO2 ; WATER ; DYNAMICS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327984
作者单位	[Yan, Chuang; Yuan, Zhiyou; Shi, Xinrong] Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China; [Yan, Chuang] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Yuan, Zhiyou; Shi, Xinrong] Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China; [Liu, Zunchi; Zhang, Jingjing; Liu, Kai] Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China; [Lock, T. Ryan; Kallenbach, Robert L.] Univ Missouri, Coll Agr Food & Nat Resources, Div Plant Sci, 108 Waters Hall, Columbia, MO 65211 USA
推荐引用方式 GB/T 7714	Yan, Chuang,Yuan, Zhiyou,Liu, Zunchi,et al. Aridity stimulates responses of root production and turnover to warming but suppresses the responses to nitrogen addition in temperate grasslands of northern China[J]. 西北农林科技大学,2021,753.
APA	Yan, Chuang.,Yuan, Zhiyou.,Liu, Zunchi.,Zhang, Jingjing.,Liu, Kai.,...&Kallenbach, Robert L..(2021).Aridity stimulates responses of root production and turnover to warming but suppresses the responses to nitrogen addition in temperate grasslands of northern China.SCIENCE OF THE TOTAL ENVIRONMENT,753.
MLA	Yan, Chuang,et al."Aridity stimulates responses of root production and turnover to warming but suppresses the responses to nitrogen addition in temperate grasslands of northern China".SCIENCE OF THE TOTAL ENVIRONMENT 753(2021).