DOI: 10.1029/2017JG004308
Scopus记录号: 2-s2.0-85047745455
论文题名: The Responses of Forest Fine Root Biomass/Necromass Ratio to Environmental Factors Depend on Mycorrhizal Type and Latitudinal Region
作者: Wang C. ; Chen Z. ; Yin H. ; Guo W. ; Cao Y. ; Wang G. ; Sun B. ; Yan X. ; Li J. ; Zhao T.-H. ; Brunner I. ; Dai G. ; Zheng Y. ; Zheng Y. ; Zu W. ; Li M.-H.
刊名: Journal of Geophysical Research: Biogeosciences
ISSN: 21698953
出版年: 2018
卷: 123, 期: 5 起始页码: 1769
结束页码: 1788
语种: 英语
英文关键词: climate change
; dead fine root
; forest biome
; living fine root
; mycorrhizal status
; successional status
Scopus关键词: abiotic factor
; arbuscular mycorrhiza
; belowground biomass
; biome
; biotic factor
; climate change
; ectomycorrhiza
; environmental factor
; fine root
; forest ecosystem
; latitude
; succession
; temperate forest
英文摘要: Fine root (≤2 mm in diameter) biomass/necromass (B/N) ratio, representing many dynamic key root parameters, can serve as a powerful measure of root vitality. Based on a global synthesis of fine root biomass and necromass in forest ecosystems, we describe a framework for recognizing responses of B/N ratio to biotic (e.g., mycorrhizal type) and abiotic (e.g., latitudinal region) characteristics. Arbuscular mycorrhiza (AM) and ectomycorrhiza (ECM) forests had similar average B/N ratios (3.28 versus 3.23). AM forest B/N ratio decreased with increasing altitude, stand density, tree age, and soil carbon/nitrogen ratio (C/N) but increased with soil pH. In contrast, ECM forest B/N ratio increased with increasing mean annual precipitation (MAP), altitude, and stand density but decreased with tree age. The average B/N ratio was higher in temperate forests (4.39) than in tropical (2.97) and boreal forests (2.40). The B/N ratio was relatively stable in temperate forests irrespective of changes in biotic and abiotic factors. In tropical forest, the B/N ratio was sensitive to mean annual temperature, altitude, soil C/N ratio, and pH, whereas in boreal forests, it was more sensitive to MAP, stand density, and tree age. The late-successional forest B/N ratio was closely aligned with biotic and abiotic factors. Our analysis revealed that the relationships of B/N ratio with climate, topography, edaphic, and stand characteristics were dependent on mycorrhizal types and latitudinal regions. These findings provide a basis for large-scale prediction of fine root dynamics and for better understanding of belowground processes of global forest ecosystems in a changing world. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113979
Appears in Collections: 气候减缓与适应
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作者单位: College of Agronomy, Shenyang Agricultural University, Shenyang, China; Swiss Federal Research Institute WSL, Birmensdorf, Switzerland; Research Station of Changbai Mountain Forest Ecosystems, Chinese Academy of Sciences, Antu, China; Forest Fire Protection Headquarters, Changbai Mountain Protection and Development Zone, Antu, China; Changbai Mountain Protection and Development Zone, Natural Conservation Management Center, Antu, China; School of Geographical Sciences, Northeast Normal University, Changchun, China
Recommended Citation:
Wang C.,Chen Z.,Yin H.,et al. The Responses of Forest Fine Root Biomass/Necromass Ratio to Environmental Factors Depend on Mycorrhizal Type and Latitudinal Region[J]. Journal of Geophysical Research: Biogeosciences,2018-01-01,123(5)