Biomass-density relationship varies with water use efficiency across an aridity gradient

被引：3

作者：

Wang, Nan ^{[1
,2
]}

Gao, Jing ^{[1
]}

Xu, Shan-Shan ^{[1
]}

Zhang, Wei-Ping ^{[1
]}

Wang, Gen-Xuan ^{[1
]}

机构：

[1] Zhejiang Univ, Coll Life Sci, CN-310058 Hangzhou, Zhejiang, Peoples R China

[2] Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, CN-712100 Yangling, Shaanxi, Peoples R China

来源：

CONTEMPORARY PROBLEMS OF ECOLOGY | 2013年 / 6卷 / 04期

关键词：

scaling exponent; plant morphological traits; foliar stable carbon isotope; SELF-THINNING LINES; MATHEMATICALLY CORRECT; PLANT; WEST; BROWN; MODEL;

D O I：

10.1134/S1995425513040069

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Accumulating evidence has shown that the scaling exponent (alpha) of the aboveground biomass-density relationship is not a constant value. Debate continues over what determines the variation in alpha. By measuring foliar stable carbon isotope, plant morphological traits and alpha along an aridity gradient from eastern to western China, we confirmed that the variation in alpha was accounted for by changes in plant morphological traits which are adaptive strategies for enhancing water use efficiency during drought stress. This information can be crucial for understanding and predicting community and ecosystem processes.

引用

页码：370 / 373

页数：4

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