Influence of Common Reed (Phragmites australis) on CH4 Production and Transport in Wetlands: Results from Single-Plant Laboratory Experiments

被引：18
作者：
Duan, Xiaonan [1 ]
Wang, Xiaoke [1 ]
Ouyang, Zhiyun [1 ]
机构：
[1] Chinese Acad Sci, State Key Lab Urban & Reg Ecol, Ecoenvironm Sci Res Ctr, Beijing 10085, Peoples R China
来源：
WATER AIR AND SOIL POLLUTION | 2009年 / 197卷 / 1-4期
关键词：
Reed; CH4; production; transport; Hydrological experiment; METHANE EMISSION; MECHANISMS; EXUDATION; ROOT; RADIOCARBON; MACROPHYTES; ATMOSPHERE; RELEASE;
D O I：
10.1007/s11270-008-9802-0
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Laboratory culture experiments were conducted with common reed (Phragmites australis) to elucidate the role of root exudates on CH4 production in wetland soils as well as the importance of different plant organs as routes of CH4 to the atmosphere. In the 50 d experiment period, root exudates ranged from 0.03 to 1.53 A mu molg(-1)d(-1), which increased with reed growth. CH4 production rate of soil was stimulated as root exudates collected was added. CH4 transport capacity rate also increased with plant growth and influenced by light intensity. Root tips were the most important part of controlling diffusion of CH4 into reed shoots, and leave transport accounted for 45.34% of total emissions into the atmosphere.
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收藏
页码：185 / 191
页数：7
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