globalchange  > 影响、适应和脆弱性
DOI: 10.1016/j.foreco.2016.01.007
Scopus记录号: 2-s2.0-84954234740
论文题名:
Species-specific competition and N fertilization regulate non-structural carbohydrate contents in two Larix species
作者: Guo Q.; Li J.; Zhang Y.; Zhang J.; Lu D.; Korpelainen H.; Li C.
刊名: Forest Ecology and Management
ISSN:  0378-1127
出版年: 2016
卷: 364
起始页码: 60
结束页码: 69
语种: 英语
英文关键词: Carbon limitation ; Forest plantation ; Interspecific competition ; Intraspecific competition ; Niche differentiation
Scopus关键词: Carbohydrates ; Plants (botany) ; Transcription ; Carbon limitation ; Forest plantation ; Inter-specific competitions ; Intraspecific competition ; Niche differentiation ; Nitrogen fertilizers ; Coniferales ; Larix ; Larix gmelinii var. olgensis ; Larix kaempferi
英文摘要: Non-structural carbohydrates (NSC) are critical to plant signaling, gene transcription, physiological processes, survival and growth. Previous studies have demonstrated that species differing in NSC contents have various responses to stressful environments. However, effects of intra- and interspecific competition or N fertilization on NSC have not been previously studied. We employed two coniferous tree species, Larix kaempferi and Larix olgensis, to investigate the effects of intra- and interspecific competition on NSC under two N supply levels, with and without N fertilization. N fertilization significantly promoted the growth rates, biomass accumulation, carbon isotope composition and N concentration of leaves of the two species. Competition patterns significantly affected the average root diameter. Interspecific competition tended to increase the specific root length and specific root tip density. Also, interspecific competition significantly increased the N concentration of leaves but declined their C:N ratio under no N fertilization (N-) treatments. L. kaempferi greatly benefited from the presence of L. olgensis, particularly under N fertilization (N+) treatments. Competition patterns, N fertilization and their interactions promoted N and carbohydrate storage. Our results demonstrated that N was a crucial factor to drive and regulate carbon balance. Differences between species in carbohydrate metabolism may contribute to their coexistence or niche differentiation. © 2016 Elsevier B.V..
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65043
Appears in Collections:影响、适应和脆弱性

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作者单位: Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China; The Nurturing Station for the State Key Laboratory of Subtropical Silviculture, Zhejiang A and F University, Lin'an, Zhejiang, China; Chengdu Institute of Biology, Chinese Academy of Sciences, PO Box 416, Chengdu, China; Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China; Qingyuan Forest CERN, Chinese Academy of Sciences, Shenyang, China; Department of Agricultural Sciences, Viikki Plant Science Centre, University of Helsinki, P.O. Box 27, Finland

Recommended Citation:
Guo Q.,Li J.,Zhang Y.,et al. Species-specific competition and N fertilization regulate non-structural carbohydrate contents in two Larix species[J]. Forest Ecology and Management,2016-01-01,364
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