Photosynthesis and nutrient-use efficiency in response to N and P addition in three dominant grassland species on the semiarid Loess Plateau

doi:10.32615/ps.2020.056

	Photosynthesis and nutrient-use efficiency in response to N and P addition in three dominant grassland species on the semiarid Loess Plateau
	Chen, Z. F.1; Xiong, P. F.1,2; Zhou, J. J.1; Lai, S. B.1; Jian, C. X.1; Wang, Z.1,3; Xu, B. C.1,3
刊名	PHOTOSYNTHETICA
	2020
卷号	58 期号:4 页码:1028-1039
关键词	ecological adaptation function groups leaf traits nutrient addition
ISSN号	0300-3604
DOI	10.32615/ps.2020.056
通讯作者	Xu, B. C.(Bcxu@ms.iswc.ac.cn)
英文摘要	Understanding the ecophysiological and nutrient-use strategies of dominant species is important for clarifying plant growth and an ecological process in their community under unbalanced N and P inputs. This study investigated effects of N and P addition [main plot: 0, 25, 50, and 100 kg(N) ha(-1) year(-1); subplot: 0, 20, 40, and 80 kg(P) ha(-1) year(-1)] on leaf N and P contents (LNCa and LPCa), photosynthetic capacity (P-Nmax) and photosynthetic N- and P-use efficiencies (PNUE and PPUE) in three species (Stipa bungeana, Bothriochloa ischaemum, and Lespedeza davurica) in a semiarid grassland in China. At the assessing time, N addition alone significantly increased LNCa and LNCa/LPCa ratio of Stipa bungeana (C-3 grass) only, while P-Nmax increased significantly in all three species. Under N addition, P addition caused significantly lower LNCa, but higher PNUE and PNmax in Bothriochloa ischaemum (C-4 grass) and Stipa bungeana. The LNCa, P-Nmax, and PNUE of Lespedeza davurica (C-3 legume) increased significantly after P addition regardless of N application. The LNCa/LPCa for optimum PNUE changed with species. The P-Nmax and PNUE of Bothriochloa ischaemum and Stipa bungeana had a peak when LNCa/LPCa attained similar to 11 and similar to 20. Lespedeza davurica tended to retain greater P-Nmax and PNUE at lower LNCa/LPCa. Our results indicated that the C3 grass was more sensitive to N and P addition than the C-4 grass and the C-3 legume in terms of leaf N and P contents and P-Nmax. Such interspecific variations of nutrient use in response to N and/or P addition are favorable for maintaining the diversity and the stability of the grassland community.
资助项目	National Key Research and Development Program ofChina[2016YFC0501703] ; National Natural Science Foundation of China[41371509] ; National Natural Science Foundation of China[41771553]
WOS关键词	ARBUSCULAR MYCORRHIZAL FUNGI ; LEGUME LESPEDEZA-DAVURICA ; NITROGEN-USE EFFICIENCY ; WATER-USE EFFICIENCY ; BOTHRIOCHLOA-ISCHAEMUM ; BIOMASS PRODUCTION ; NATURAL GRASSLAND ; VARYING WATER ; LEAF NITROGEN ; GAS-EXCHANGE
WOS研究方向	Plant Sciences
语种	英语
出版者	ACAD SCIENCES CZECH REPUBLIC, INST EXPERIMENTAL BOTANY
WOS记录号	WOS:000566667900015
资助机构	National Key Research and Development Program ofChina ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/157920]
专题	中国科学院地理科学与资源研究所
通讯作者	Xu, B. C.
作者单位	1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Anhui Agr Univ, Sch Resources & Environm, Hefei 230036, Anhui, Peoples R China 3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Chen, Z. F.,Xiong, P. F.,Zhou, J. J.,et al. Photosynthesis and nutrient-use efficiency in response to N and P addition in three dominant grassland species on the semiarid Loess Plateau[J]. PHOTOSYNTHETICA,2020,58(4):1028-1039.
APA	Chen, Z. F..,Xiong, P. F..,Zhou, J. J..,Lai, S. B..,Jian, C. X..,...&Xu, B. C..(2020).Photosynthesis and nutrient-use efficiency in response to N and P addition in three dominant grassland species on the semiarid Loess Plateau.PHOTOSYNTHETICA,58(4),1028-1039.
MLA	Chen, Z. F.,et al."Photosynthesis and nutrient-use efficiency in response to N and P addition in three dominant grassland species on the semiarid Loess Plateau".PHOTOSYNTHETICA 58.4(2020):1028-1039.