• Title/Summary/Keyword: Huber valuer(HV)

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Ecophysiological Interpretations on the Water Relations Parameters of Trees (XI) -The Comparison of Hydraulic Conductivity of Branch Junctions in Twenty-one Deciduous Broad-Leaved Species (수목(壽木)의 수분특성(水分特性)에 관한 생리(生理)·생태학적(生態學的) 해석(解析)(XI) - 낙엽(落葉) 활엽수(闊葉樹) 21종(種)의 분지부(分枝部)의 수분통도성(水分通道性) 비교(比較) -)

  • Han, Sang Sup;Kim, Sun Hee;Yi, Myong Jong
    • Journal of Korean Society of Forest Science
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    • v.87 no.2
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    • pp.220-229
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    • 1998

  • This study was performed to compare the characteristics of hydraulic conductivity such as relative conductivity(RC), leaf specific conductivity(LSC), Huber value(HV), specific conductivity(SC), and diameter of vessels(${\mu}m$) and number of vessels($No./mm^2$) in branch junctions of the twenty-one deciduous broad-leaved species. The hydraulic conductivities of branch junctions decreased with increasing junction angle between stem and branch, and with decreasing diameter of branch. The RC and LSC of branch junctions related to branching types(ㅏ, Y, ${\Psi}$ type) were much lower in ㅏ and ${\Psi}$ types than in Y type. The diameter and number of vessels remarkably reduced in branch junctions as compared with the stem and branch.

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