Functional coordination between branch hydraulic properties and leaf functional traits in miombo woodlands: implications for water stress management and species habitat preference

被引：15

作者：

Vinya, Royd ^{[1
,2
]}

Malhi, Yadvinder ^{[2
]}

Brown, Nick ^{[3
]}

Fisher, Joshua B. ^{[2
]}

机构：

[1] Copperbelt Univ, Sch Nat Resources, Kitwe, Zambia

[2] Univ Oxford, Environm Change Inst, Sch Geog & Environm, Oxford OX1 3QY, England

[3] Univ Oxford, Dept Plant Sci, Oxford OX1 3QY, England

来源：

ACTA PHYSIOLOGIAE PLANTARUM | 2012年 / 34卷 / 05期

关键词：

Huber value; Leaf dry matter content; Miombo woodlands; Specific leaf area; Stem area specific hydraulic conductivity; Xylem cavitation; TROPICAL TREE; WOODY-PLANTS; AREA; XYLEM; VULNERABILITY; DRY; CONDUCTANCE; MASS; CONVERGENCE; PHOSPHORUS;

D O I：

10.1007/s11738-012-0965-3

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

We investigated functional coordination between branch hydraulic properties and leaf functional traits among nine miombo woodlands canopy tree species differing in habitat preference and phenology. Specifically, we were seeking to answer the question: are branch hydraulic properties coordinated with leaf functional traits linked to plant drought tolerance in seasonally dry tropical forests and what are the implications for species habitat preference? The hydraulic properties investigated in this study were stem area specific hydraulic conductivity (K (S)), Huber value (H (v)), and xylem cavitation vulnerability (I-50). The leaf functional traits measured were specific leaf area (SLA), leaf dry matter content (LDMC), and mean leaf area (MLA). Generalists displayed significantly (P < 0.05) higher cavitation resistance (I-50) and SLA, but lower sapwood specific hydraulic conductivity (K (S)), leaf specific conductivity (K (L)), MLA, and LDMC than mesic specialists. Although MLA was uncorrelated with I-50, we found significant (P < 0.05) positive and negative correlations between plant hydraulic properties and leaf functional traits linked to plant drought tolerance ability, indicating that the interactions between branch hydraulics and leaf functional traits related to plant drought tolerance ability may influence tree species habitat preference in water-limited ecosystems.

引用

页码：1701 / 1710

页数：10

共 48 条

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