植物学报2011，Vol.46Issue(5)：534-543,10.DOI:10.3724/SP.J.1259.2011.00534
沼泽湿地互花米草植物体传输与排放甲烷特征
Plant-mediated Methane Transport and Emission from a Spartina alterniflora Marsh
摘要
Abstract
We measured methane transport capacity and methane emission from Spartina alterniflora using the "hanging" enclosed static chamber technique and gas chromatography during neap tide from May 2009 to January 2010 in an S. Altemiflora marsh in the Min River estuary. The main parts of methane release from S. Alterniflora were also determined. Based on the above measurements we analyzed the contribution rate of plant methane transport to methane emission from the S. Alterniflora marsh and measured methane concentrations in the medullary cavity of S. Alterniflora. The methane transport capacities of S. Alterniflora significantly differed during different growth stages, with the highest transport capacity in the fast growth stage. The contribution rates of plant-mediated methane transport to total methane emission from the S. Alterniflora marsh ranged from 9% to 94%. Methane transported by S. Alterniflora plant was mainly released at plant height 0 to 20 cm above ground, with the average contribution rate of this part to whole plant transport capacity being 50%. The methane concentration in the medullary cavity of S. Alterniflora was much higher than that in the atmosphere and decreased from the bottom to the top of S. Alterniflora plants.关键词
甲烷/植物体传输/排放部位/互花米草Key words
methane/plant-mediated transport/release part/Spartina altemiflora引用本文复制引用
黄佳芳,仝川,刘泽雄,肖海燕,张林海..沼泽湿地互花米草植物体传输与排放甲烷特征[J].植物学报,2011,46(5):534-543,10.基金项目
国家自然科学基金(No.31000262和No.40671174)和福建省科技厅重点项目(No.2010Y0019) （No.31000262和No.40671174）
