Responses of nutrient capture and fine root morphology of subalpine coniferous tree Picea asperata to nutrient heterogeneity and competition

doi:10.1371/journal.pone.0187496

CORC > 成都生物研究所 > 中国科学院成都生物研究所 > 生物多样性与生态系统服务领域 > 中国科学院山地生态恢复与生物资源利用重点实验室

	Responses of nutrient capture and fine root morphology of subalpine coniferous tree Picea asperata to nutrient heterogeneity and competition
	Li, Dandan 2,3; Nan, Hongwei 1; Liang, Jin 2,3; Cheng, Xinying 2,3; Zhao, ChunZhang 2,3; Yin, HuaJun 2,3; Yin, ChunYing 2,3; Liu, Qing 2,3
刊名	PLOS ONE
	2017-11-02
卷号	12 期号:11 页码:e0187496
ISSN号	1932-6203
DOI	10.1371/journal.pone.0187496
产权排序	1
文献子类	Article
英文摘要	Investigating the responses of trees to the heterogeneous distribution of nutrients in soil and simultaneous presence of neighboring roots could strengthen the understanding of an influential mechanism on tree growth and provide a scientific basis for forest management. Here, we conducted two split-pot experiments to investigate the effects of nutrient heterogeneity and intraspecific competition on the fine root morphology and nutrient capture of Picea asperata. The results showed that P. asperata efficiently captured nutrients by increasing the specific root length (SRL) and specific root area (SRA) of first-and second-order roots and decreasing the tissue density of first-order roots to avoid competition for resources and space with neighboring roots. The nutrient heterogeneity and addition of fertilization did not affect the fine root morphology, but enhanced the P and K concentrations in the fine roots in the absence of a competitor. On the interaction between nutrient heterogeneity and competition, competition decreased the SRL and SRA but enhanced the capture of K under heterogeneous soil compared with under homogeneous soil. Additionally, the P concentration, but not the K concentration, was linearly correlated to root morphology in heterogeneous soil, even when competition was present. The results suggested that root morphological features were only stimulated when the soil nutrients were insufficient for plant growth and the nutrients accumulations by root were mainly affected by the soil nutrients more than the root morphology.
学科主题	Environment/ecology
URL标识	查看原文
WOS关键词	BRANCH ORDER ; INTERSPECIFIC COMPETITION ; PLANTS ; TEMPERATE ; FOREST ; CARBON ; ACQUISITION ; PLASTICITY ; DIVERSITY ; PATTERNS
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	PUBLIC LIBRARY SCIENCE
WOS记录号	WOS:000414340200103
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/29893]
专题	生物多样性与生态系统服务领域_中国科学院山地生态恢复与生物资源利用重点实验室
作者单位	1.Shanxi Agr Univ, Coll Forestry, Jinzhong, Peoples R China 2.Chinese Acad Sci, Chengdu Inst Biol, Key Lab Mt Ecol Restorat & Bioresource Utilizat, Chengdu, Sichuan, Peoples R China; 3.Chinese Acad Sci, Chengdu Inst Biol, Ecol Restorat Biodivers Conservat Key Lab Sichuan, Chengdu, Sichuan, Peoples R China;
推荐引用方式 GB/T 7714	Li, Dandan,Nan, Hongwei,Liang, Jin,et al. Responses of nutrient capture and fine root morphology of subalpine coniferous tree Picea asperata to nutrient heterogeneity and competition[J]. PLOS ONE,2017,12(11):e0187496.
APA	Li, Dandan.,Nan, Hongwei.,Liang, Jin.,Cheng, Xinying.,Zhao, ChunZhang.,...&Liu, Qing.(2017).Responses of nutrient capture and fine root morphology of subalpine coniferous tree Picea asperata to nutrient heterogeneity and competition.PLOS ONE,12(11),e0187496.
MLA	Li, Dandan,et al."Responses of nutrient capture and fine root morphology of subalpine coniferous tree Picea asperata to nutrient heterogeneity and competition".PLOS ONE 12.11(2017):e0187496.