Leaf economics and hydraulic traits are decoupled in five species-rich tropical-subtropical forests

被引：340

作者：

Li, Le ^{[1
,2
,3
]}

McCormack, M. Luke ^{[1
,2
]}

Ma, Chengen ^{[1
,2
,3
]}

Kong, Deliang ^{[4
]}

Zhang, Qian ^{[5
]}

Chen, Xiaoyong ^{[5
]}

Zeng, Hui ^{[4
,6
,7
]}

Niinemets, Uelo ^{[8
,9
]}

Guo, Dali ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Ctr Forest Ecosyst Studies, Beijing 100101, Peoples R China

[2] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Qianyanzhou Stn, Beijing 100101, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[4] Peking Univ, Shenzhen Grad Sch, Key Lab Sci & Technol Urban Environm, Shenzhen 518055, Peoples R China

[5] E China Normal Univ, Tiantong Natl Stn Forest Ecosyst, Sch Ecol & Environm Sci, Shanghai 200241, Peoples R China

[6] Peking Univ, Dept Ecol, Coll Urban & Environm Sci, Minist Educ, Beijing 100871, Peoples R China

[7] Peking Univ, Minist Educ, Key Lab Earth Surface Proc, Beijing 100871, Peoples R China

[8] Estonian Univ Life Sci, Dept Plant Physiol, EE-51014 Tartu, Estonia

[9] Estonian Acad Sci, EE-10130 Tallinn, Estonia

来源：

ECOLOGY LETTERS | 2015年 / 18卷 / 09期

关键词：

Functional divergence; leaf carbon isotope composition (C-13); leaf dry mass per area; leaf economics spectrum; leaf hydraulics; leaf nitrogen concentration; stomatal density; vein density; woody angiosperms; FUNCTIONAL TRAITS; PHOTOSYNTHETIC CAPACITY; EVOLUTION; VENATION; DENSITY; SIZE; ACCLIMATION; CONDUCTANCE; STRATEGIES; SPECTRUM;

D O I：

10.1111/ele.12466

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071301 [植物生态学];

摘要：

Leaf economics and hydraulic traits are critical to leaf photosynthesis, yet it is debated whether these two sets of traits vary in a fully coordinated manner or there is room for independent variation. Here, we tested the relationship between leaf economics traits, including leaf nitrogen concentration and leaf dry mass per area, and leaf hydraulic traits including stomatal density and vein density in five tropical-subtropical forests. Surprisingly, these two suites of traits were statistically decoupled. This decoupling suggests that independent trait dimensions exist within a leaf, with leaf economics dimension corresponding to light capture and tissue longevity, and the hydraulic dimension to water-use and leaf temperature maintenance. Clearly, leaf economics and hydraulic traits can vary independently, thus allowing for more possible plant trait combinations. Compared with a single trait dimension, multiple trait dimensions may better enable species adaptations to multifarious niche dimensions, promote diverse plant strategies and facilitate species coexistence.

引用

页码：899 / 906

页数：8

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