Unaltered phenology but increased production of ectomycorrhizal roots of Pinus elliottii under 4 years of nitrogen addition

doi:10.1111/nph.15542

	Unaltered phenology but increased production of ectomycorrhizal roots of Pinus elliottii under 4 years of nitrogen addition
	Kou, Liang 1; Li, Shenggong 1,2; Wang, Huimin 1,2,3; Fu, Xiaoli 1,2; Dai, Xiaoqin 1
刊名	NEW PHYTOLOGIST
	2019-03-01
卷号	221 期号:4 页码:2228-2238
关键词	carbon (C) dynamics ectomycorrhizal (ECM) roots nitrogen (N) addition root dynamics root growth
ISSN号	0028-646X
DOI	10.1111/nph.15542
通讯作者	Kou, Liang(koul@igsnrr.ac.cn) ; Li, Shenggong(lisg@igsnrr.ac.cn)
英文摘要	Timing (phenology) and amount (production) are two integral facets of root growth, and their shifts have profound influences on below-ground resource acquisition. However, the environmental control and the effects of nitrogen (N) deposition on the production and phenology of ectomycorrhizal (ECM) roots remain unclear. Using a 4 yr minirhizotron experiment, we explored the control of the production and three phenophases (initiation, peak, and cessation of growth) of ECM roots in two soil layers and investigated their dynamic responses to N addition in a seasonally dry subtropical Pinus elliottii forest. We found a stronger control of water availability on the production and a stronger control of temperature on the phenology of ECM roots under ambient conditions. Temperature was correlated positively with initiation and negatively with cessation, especially in the shallow layer. N addition did not affect the phenology of ECM roots but increased their production by modifying N and phosphorus (P) stoichiometry in the soil and foliage. Our findings suggest a greater sensitivity of production than phenology of ECM roots to N addition. The increased production of ECM roots under N addition could be driven by N-induced P limitation or some combination of below-ground resources (P, N, water).
资助项目	National Natural Science Foundation of China[41830646] ; National Natural Science Foundation of China[31700379] ; National Natural Science Foundation of China[31570443] ; National Key Research and Development Program of China[2016YFD0600202]
WOS关键词	LONG-TERM ; GROWING-SEASON ; LIFE-SPAN ; TURNOVER RATE ; FOREST ; DEPOSITION ; DYNAMICS ; DROUGHT ; WATER ; PLANTATION
WOS研究方向	Plant Sciences
语种	英语
出版者	WILEY
WOS记录号	WOS:000458259600045
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/49429]
专题	中国科学院地理科学与资源研究所
通讯作者	Kou, Liang; Li, Shenggong
作者单位	1.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Qianyanzhou Ecol Res Stn, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 3.Jiangxi Prov Key Lab Ecosyst Proc & Informat, Taihe 343725, Peoples R China
推荐引用方式 GB/T 7714	Kou, Liang,Li, Shenggong,Wang, Huimin,et al. Unaltered phenology but increased production of ectomycorrhizal roots of Pinus elliottii under 4 years of nitrogen addition[J]. NEW PHYTOLOGIST,2019,221(4):2228-2238.
APA	Kou, Liang,Li, Shenggong,Wang, Huimin,Fu, Xiaoli,&Dai, Xiaoqin.(2019).Unaltered phenology but increased production of ectomycorrhizal roots of Pinus elliottii under 4 years of nitrogen addition.NEW PHYTOLOGIST,221(4),2228-2238.
MLA	Kou, Liang,et al."Unaltered phenology but increased production of ectomycorrhizal roots of Pinus elliottii under 4 years of nitrogen addition".NEW PHYTOLOGIST 221.4(2019):2228-2238.