Understory plants can make substantial contributions to soil respiration: Evidence from two subtropical plantations

被引：48

作者：

Wu, Jianping ^{[1
,2
]}

Liu, Zhanfeng ^{[1
]}

Chen, Dima ^{[1
]}

Huang, Guomin ^{[1
]}

Zhou, Lixia ^{[1
]}

Fu, Shenglei ^{[1
]}

机构：

[1] Chinese Acad Sci, S China Bot Garden, Key Lab Vegetat Restorat & Management Degraded Ec, Guangzhou 510650, Guangdong, Peoples R China

[2] Nanchang Inst Technol, Inst Ecol & Environm Sci, Nanchang 330099, Peoples R China

来源：

SOIL BIOLOGY & BIOCHEMISTRY | 2011年 / 43卷 / 11期

基金：

美国国家科学基金会;

关键词：

Soil respiration; Root respiration; Understory plants; FOREST; BIOMASS; CLIMATE;

D O I：

10.1016/j.soilbio.2011.07.011

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Although the importance of understory plants for ecosystem function and processes has been increasingly recognized, the contribution of understory root respiration to soil respiration in forest ecosystems has seldom been studied. In this experiment, we quantified understory root respiration in two subtropical Eucalyptus plantations (2-year-old and 24-year-old). When Eucalyptus was not girdled, understory root respiration accounted for 16% and 35% of total soil respiration in the young and old plantation, respectively. However, the percentages of understory root respiration to total soil respiration were 30% and 11% in the young and old plantation when Eucalyptus was girdled, respectively. We propose that understory root respiration can be substantial in subtropical forests and should be considered in ecosystem carbon budget. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：2355 / 2357

页数：3

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