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DOI	10.1016/j.foreco.2019.117637
	Does stoichiometric homeostasis differ among tree organs and with tree age?
	Wang J.; Wang J.; Wang L.; Zhang H.; Guo Z.; Geoff Wang G.; Smith W.K.; Wu T.
发表日期	2019
ISSN	0378-1127
卷号	453
英文摘要	The degree of stoichiometric homeostasis can be indicated by the homeostatic coefficient (H), which reflects the ability of plants to maintain a stable nutrient composition regardless of changes in environmental nutrients. In previous studies, H had been determined primarily in herbs and varied significantly among organs and growth stages. However, whether H varies according to organ-type and age in tree species is unknown. In this study, nitrogen (N) and phosphorus (P) fertilization experiments were conducted in young and mature Metasequoia glyptostroboides plantation stands. The H of N (HN) and H of N:P (HN:P) was found in young trees, H of P (HP) and HN:P existed in mature trees. Also, leaf HN:P of mature trees was greater than that of young trees (P < 0.05), and H showed significant difference among organs in mature trees (P < 0.05), but not in young trees (P > 0.05). Thus, stoichiometric homeostasis varied with tree age and among organs, and leaf N:P was more tightly constrained in mature trees than in young trees. These findings imply that stoichiometric homeostasis is coupled to tree growth and development, which suggest N limitation for young trees and P limitation for mature trees, at least in M. glyptostroboides. © 2019
英文关键词	H; Metasequoia glyptostroboides; Organs; Stoichiometric homoeostasis; Tree age
语种	英语
scopus关键词	Nutrients; Plants (botany); Fertilization experiment; Growth stages; Homoeostasis; Metasequoia glyptostroboides; Nutrient composition; Organs; Tree age; Tree species; Forestry; homeostasis; maturation; nitrogen; phosphorus; physiological response; plantation; stoichiometry; tree; Age; Experimentation; Forestry; Growth; Nitrogen; Nutrients; Plants; Trees; Metasequoia glyptostroboides
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155705
作者单位	East China Coastal Forest Ecosystem Long-term Research Station, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, Zhejiang 311400, China; Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Department of Forestry and Environmental Conservation, Clemson University, Clemson, SC 29634-0317, United States; Department of Biology, Wake Forest University, Winston-Salem, NC 27106-5066, United States
推荐引用方式 GB/T 7714	Wang J.,Wang J.,Wang L.,et al. Does stoichiometric homeostasis differ among tree organs and with tree age?[J],2019,453.
APA	Wang J..,Wang J..,Wang L..,Zhang H..,Guo Z..,...&Wu T..(2019).Does stoichiometric homeostasis differ among tree organs and with tree age?.Forest Ecology and Management,453.
MLA	Wang J.,et al."Does stoichiometric homeostasis differ among tree organs and with tree age?".Forest Ecology and Management 453(2019).