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Differential responses of Picea asperata and Betula albosinensis to nitrogen supply imposed by water availability

文献类型：期刊论文

作者Yin, Chunying1; Palmroth, Sari2; Pang, Xueyong1; Tang, Bo1; Liu, Qing1; Oren, Ram2,3
刊名TREE PHYSIOLOGY
出版日期2018-11
卷号38期号:11页码:1694-1705
关键词biomass production photosynthetic nitrogen use efficiency photosynthetic rate plant volume root/shoot biomass water-use efficiency
ISSN号0829-318X
DOI10.1093/treephys/tpy048
产权排序1
文献子类Article
英文摘要A pot experiment was conducted to investigate the effects of nitrogen (N) addition (0, 20, 40 g N m(-2) year(-1), N0, N20, N40, respectively) on the growth, and biomass accumulation and allocation of coniferous and deciduous (Picea asperata Mast. and Betula albosinensis Burk.) seedlings under a range of soil moisture limitation (40%, 50%, 60%, 80% and 100% of field capacity, FC). At 100% FC, growth of shade-tolerant P. asperata increased with N supply, while that of shade-intolerant B. albosinensis reached a maximum at N20, declining somewhat thereafter. At 60% FC and lower moisture content, water availability limited the growth of P. asperata seedlings, while N availability became progressively limiting to growth with moisture increasing above 60% FC. The transition from principally water-limited response to N-limited response in B. albosinensis occurred at lower moisture content. For P. asperata, these patterns reflected the responses of roots, consistent with changes in root/shoot biomass. For B. albosinensis the response reflected changes in shoot dimensions and root biomass fraction, the latter decreasing with size and foliar [N]. We are not aware of another study demonstrating such differences in the shape of the growth responses of seedlings of differing potential growth rate, across a range in belowground resource supply. The responses of leaf photosynthesis (as well as photosynthetic water and N-use efficiencies) were consistent with the observed growth response of P. asperata to water and N availability, but not of B. albosinensis, suggesting that leaf area dynamics (not measured) dominated the response of this species. Betula albosinensis, a fast-growing species, has a relative narrow range of soil water and N availability for maximum growth, achieved by preferential allocation to the shoot as resources meet the requirements at moderate N and water supply. In contrast, P. asperata increases shoot biomass progressively with increasing resources up to moderate water supply, preferentially growing more roots when resources are not limiting, suggesting that its capacity to produce shoot biomass may reach a biological limit at moderate levels of resource supply.
学科主题Plant Sciences
URL标识查看原文
WOS关键词TREE SEEDLINGS ; LEAF STRUCTURE ; USE EFFICIENCY ; SOIL-WATER ; GROWTH ; DROUGHT ; PHOTOSYNTHESIS ; NUTRITION ; NUTRIENT ; FERTILIZATION
WOS研究方向Forestry
语种英语
WOS记录号WOS:000452458300008
出版者OXFORD UNIV PRESS
源URL[http://210.75.237.14/handle/351003/29881]  
专题生物多样性与生态系统服务领域_生态系统恢复与生物多样性保育四川省重点实验室
成都生物研究所_生态研究
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
生物多样性与生态系统服务领域_生态研究
通讯作者Yin, Chunying
作者单位1.CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, PO Box 416, Chengdu 610041, PR China;
2.Duke Univ, Nicholas Sch Environm, Box 90328, Durham, NC 27708 USA;
3.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China
推荐引用方式
GB/T 7714		 Yin, Chunying,Palmroth, Sari,Pang, Xueyong,et al. Differential responses of Picea asperata and Betula albosinensis to nitrogen supply imposed by water availability[J]. TREE PHYSIOLOGY,2018,38(11):1694-1705.
APA Yin, Chunying,Palmroth, Sari,Pang, Xueyong,Tang, Bo,Liu, Qing,&Oren, Ram.(2018).Differential responses of Picea asperata and Betula albosinensis to nitrogen supply imposed by water availability.TREE PHYSIOLOGY,38(11),1694-1705.
MLA Yin, Chunying,et al."Differential responses of Picea asperata and Betula albosinensis to nitrogen supply imposed by water availability".TREE PHYSIOLOGY 38.11(2018):1694-1705.

入库方式： OAI收割

来源：成都生物研究所

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