EVAPORATIVE DEMAND DETERMINES BRANCHINESS OF SCOTS PINE

被引：27

作者：

BERNINGER, F

MENCUCCINI, M

NIKINMAA, E

GRACE, J

HARI, P

机构：

[1] UNIV FLORENCE,INST FOREST ECOL & SILVICULTURE,I-50145 FLORENCE,ITALY

[2] UNIV EDINBURGH,INST ECOL & RESOURCE MANAGEMENT,EDINBURGH EH9 3JU,MIDLOTHIAN,SCOTLAND

来源：

OECOLOGIA | 1995年 / 102卷 / 02期

关键词：

PINUS SYLVESTRIS; HYDRAULIC ARCHITECTURE; GEOGRAPHIC VARIATION; PIPE THEORY; BRANCHINESS;

D O I：

10.1007/BF00333247

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Analysis of the branch area/stem area ratio of Scots pine growing in different climatic conditions in Europe and Siberia indicates that the branch area supported by a stem increases in warmer and drier conditions. The ratio was significantly correlated with several climatic variables, especially with potential evapotranspiration (E(p)). The ratio was negatively correlated with stand density (d(s)). A regression model combining E(p) and d(s) accounted for 85% of the total variation. These trends are believed to reflect hydraulic segmentation of trees and may represent a strategy to avoid cavitation in the tree, especially in the branches.

引用

页码：164 / 168

页数：5

共 33 条

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