Different Responses and Links of N:P Ratio Among Ecosystem Components Under Nutrient Addition in a Temperate Forest

doi:10.1029/2019JG005080

	Different Responses and Links of N:P Ratio Among Ecosystem Components Under Nutrient Addition in a Temperate Forest
	Shen, Ying 2,3; Tian, Dashuan 3,6; Jiang, Liangchao 4; Wang, Jinsong 3; Chen, Xinli 5; Li, Yong 1; Wang, Bingxue 3; Li, Zhaolei 3; Fu, Yiwen 3; Hou, Jihua 2
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
	2019-10-01
卷号	124 期号:10 页码:3158-3167
关键词	nitrogen addition phosphorus addition N P ratio element concentration ecosystem component temperate forest
ISSN号	2169-8953
DOI	10.1029/2019JG005080
通讯作者	Tian, Dashuan(tiands@igsnrr.ac.cn) ; Hou, Jihua(houjihua@bjfu.edu.cn)
英文摘要	Nitrogen (N) and phosphorus (P) deposition have increased rapidly during the past decades, which likely changes soil N and P availability. These soil resource variations will further affect N, P concentration and N:P ratio in different ecosystem pools (i.e., soil, leaf, litter, root, and microbe). Various pools may show different stoichiometric responses to nutrient enrichment, with a further influence on ecosystem nutrient cycling. However, few studies have been conducted to fully examine the stoichiometric responses of different pools and their nutrient relationships in a given ecosystem. Here we established a 2-year experiment of N (10 g m(-2) year(-1)), P (10 g m(-2) year(-1)), and combined N + P addition in a temperate forest of Changbai Mountain. We found significantly different N:P stoichiometric responses among various ecosystem components under P addition, with the leaves showing a higher response than litter and root while microbe behaving the lowest response. The responses of N:P ratio to N + P addition were similar with those under P addition in all pools. In most cases, N addition did not significantly affect N:P ratio. These results indicate that N:P ratio response was mainly determined by changes in P rather than N concentration in this temperate forest ecosystem. Moreover, we found tighter N:P stoichiometric correlations than elements among diverse ecosystem components under nutrient addition. Overall, our research reveals different responses and tight links of element stoichiometric variations among various ecosystem components in face of nutrient enrichment. It calls our attention to considering stoichiometric changes in the whole ecosystem beyond individual plant organ or microbial component.
资助项目	National Natural Science Foundation of China[31600356] ; National Natural Science Foundation of China[31625006] ; National Natural Science Foundation of China[41403073]
WOS关键词	NITROGEN LIMITATION ; PHOSPHORUS LIMITATION ; ATMOSPHERIC NITROGEN ; TERRESTRIAL PLANTS ; P STOICHIOMETRY ; SOIL ; LEAVES ; MECHANISMS ; ALLOCATION ; RESORPTION
WOS研究方向	Environmental Sciences & Ecology ; Geology
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000493212100001
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/132035]
专题	中国科学院地理科学与资源研究所
通讯作者	Tian, Dashuan; Hou, Jihua
作者单位	1.Inst Wetland Res, Beijing Key Lab Wetland Serv & Restorat, Beijing, Peoples R China 2.Beijing Forestry Univ, Key Lab Forest Resources & Ecosyst Proc Beijing, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China 4.Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 5.Lakehead Univ, Fac Nat Resources Management, Thunder Bay, ON, Canada 6.Univ Chinese Acad Sci, Dept Resources & Environm, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Shen, Ying,Tian, Dashuan,Jiang, Liangchao,et al. Different Responses and Links of N:P Ratio Among Ecosystem Components Under Nutrient Addition in a Temperate Forest[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2019,124(10):3158-3167.
APA	Shen, Ying.,Tian, Dashuan.,Jiang, Liangchao.,Wang, Jinsong.,Chen, Xinli.,...&Niu, Shuli.(2019).Different Responses and Links of N:P Ratio Among Ecosystem Components Under Nutrient Addition in a Temperate Forest.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,124(10),3158-3167.
MLA	Shen, Ying,et al."Different Responses and Links of N:P Ratio Among Ecosystem Components Under Nutrient Addition in a Temperate Forest".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 124.10(2019):3158-3167.