論文

査読有り
2011年1月

Very fine roots respond to soil depth: biomass allocation, morphology, and physiology in a broad-leaved temperate forest

ECOLOGICAL RESEARCH
  • Naoki Makita
  • ,
  • Yasuhiro Hirano
  • ,
  • Takeo Mizoguchi
  • ,
  • Yuji Kominami
  • ,
  • Masako Dannoura
  • ,
  • Hiroaki Ishii
  • ,
  • Leena Finer
  • ,
  • Yoichi Kanazawa

26
1
開始ページ
95
終了ページ
104
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1007/s11284-010-0764-5
出版者・発行元
SPRINGER JAPAN KK

Very fine roots (< 0.5 mm in diameter) of forest trees may serve as better indicators of root function than the traditional category of < 2 mm, but how these roots will exhibit the plasticity of species-specific traits in response to heterogeneous soil nutrients is unknown. Here, we examined the vertical distribution of biomass and morphological and physiological traits of fine roots across three narrow diameter classes (< 0.5, 0.5-1.0, and 1.0-2.0 mm) of Quercus serrata and Ilex pedunculosa at five soil depths down to 50 cm in a broad-leaved temperate forest. In both species, biomass and the allocation of very fine roots were higher in the surface soil but lower below 10-cm soil depth compared to values for larger roots (0.5-2.0 mm). When we applied these diameter classes, only very fine roots of Q. serrata exhibited significant changes in specific root length (SRL; m g(-1)) and root nitrogen (N) concentrations with soil depth, whereas the N concentrations only changed significantly in I. pedunculosa. The SRL and root N concentrations of larger roots in the two species did not significantly differ among soil depths. Thus, very fine roots may exhibit species-specific traits and change their potential for nutrient and water uptake in response to soil depth by plasticity in root biomass, the length, and the N in response to available resources.

リンク情報
DOI
https://doi.org/10.1007/s11284-010-0764-5
J-GLOBAL
https://jglobal.jst.go.jp/detail?JGLOBAL_ID=201102230094140167
CiNii Articles
http://ci.nii.ac.jp/naid/10027880835
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000286431900011&DestApp=WOS_CPL
ID情報
  • DOI : 10.1007/s11284-010-0764-5
  • ISSN : 0912-3814
  • eISSN : 1440-1703
  • J-Global ID : 201102230094140167
  • CiNii Articles ID : 10027880835
  • Web of Science ID : WOS:000286431900011

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