气候变化领域集成服务门户(CCPortal): Differential Responses of Plant Primary Productivity to Nutrient Addition in Natural and Restored Alpine Grasslands in the Qinghai Lake Basin

CCPortal

DOI	10.3389/fpls.2021.792123
	Differential Responses of Plant Primary Productivity to Nutrient Addition in Natural and Restored Alpine Grasslands in the Qinghai Lake Basin
	Li, Chunli; Li, Yonghui; Li, Xinwei; Ma, Li; Xiao, Yuanming; Zhang, Chunhui
通讯作者	Zhang, CH (通讯作者)，Qinghai Univ, State Key Lab Plateau Ecol & Agr, Xining, Peoples R China.
发表日期	2021
ISSN	1664-462X
卷号	12
英文摘要	Climate, land-use changes, and nitrogen (N) deposition strongly impact plant primary productivity, particularly in alpine grassland ecosystems. In this study, the differential responses of plant community primary productivity to N and phosphorus (P) nutrient application were investigated in the natural (NG) and Grain for Green restored (RG) alpine grasslands by a continuous 3-year experiment in the Qinghai Lake Basin. N addition only significantly promoted plant aboveground biomass (AGB) by 42% and had no significant effect on belowground biomass (BGB) and total biomass (TB) in NG. In comparison with NG, N addition elevated AGB and BGB concurrently in RG by 138% and 24%, respectively, which further significantly increased TB by 41% in RG. Meanwhile, N addition significantly decreased BGB and the AGB ratio (R/S) both in NG and RG. Compared with N addition, P addition did not perform an evident effect on plant biomass parameters. Additionally, AGB was merely negatively influenced by growing season temperatures (GST) under the N addition treatment in NG. AGB was negatively associated with GST but positively related to growing season precipitation (GSP) in RG. By contrast, changes in the R/S ratio in RG were positively correlated with GST and negatively related to GSP. In sum, the results revealed that plant community biomass exhibited convergent (AGB and R/S) and divergent (BGB and TB) responses to N addition between NG and RG. In addition, the outcomes suggested that climate warming would enhance plant biomass allocation to belowground under ongoing N deposition, and indicated the significance of precipitation for plant growth and AGB accumulation in this restored alpine grassland ecosystem.
关键词	SOIL-PHOSPHORUS FRACTIONS NITROGEN ADDITION TIBETAN PLATEAU INCREASED PRECIPITATION TERRESTRIAL ECOSYSTEMS ATMOSPHERIC NITROGEN CARBON ALLOCATION STIPA-PURPUREA CO-LIMITATION MEADOW
英文关键词	alpine grassland; plant primary productivity; nitrogen and phosphorus additions; restored grassland; climate change
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:000738862400001
来源期刊	FRONTIERS IN PLANT SCIENCE
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254383
作者单位	[Li, Chunli; Li, Yonghui; Li, Xinwei; Zhang, Chunhui] Qinghai Univ, State Key Lab Plateau Ecol & Agr, Xining, Peoples R China; [Ma, Li] Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Cold Reg Restorat Ecol, Xining, Peoples R China; [Xiao, Yuanming] Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Tibetan Med Res, Xining, Peoples R China
推荐引用方式 GB/T 7714	Li, Chunli,Li, Yonghui,Li, Xinwei,et al. Differential Responses of Plant Primary Productivity to Nutrient Addition in Natural and Restored Alpine Grasslands in the Qinghai Lake Basin[J]. 中国科学院西北生态环境资源研究院,2021,12.
APA	Li, Chunli,Li, Yonghui,Li, Xinwei,Ma, Li,Xiao, Yuanming,&Zhang, Chunhui.(2021).Differential Responses of Plant Primary Productivity to Nutrient Addition in Natural and Restored Alpine Grasslands in the Qinghai Lake Basin.FRONTIERS IN PLANT SCIENCE,12.
MLA	Li, Chunli,et al."Differential Responses of Plant Primary Productivity to Nutrient Addition in Natural and Restored Alpine Grasslands in the Qinghai Lake Basin".FRONTIERS IN PLANT SCIENCE 12(2021).