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当前位置: 首页 > 文章 > 垃圾填埋场覆土层植物根围甲烷氧化活性研究 西北林学院学报 2010,25 (6) 59-63
Position: Home > Articles > Rhizosphere Methane Oxidation Activity in the Cover Soil of Landfill Journal of Northwest Forestry University 2010,25 (6) 59-63

垃圾填埋场覆土层植物根围甲烷氧化活性研究

作  者：
赵长炜;梁英梅;张立秋;洪喻
单  位：
北京林业大学环境科学与工程学院
关键词：
垃圾填埋场;甲烷氧化菌;植物;甲烷氧化活性;植被恢复
摘  要：
采用滚管计数法和气相色谱法,研究了植物因素对垃圾填埋场封场覆土层中甲烷氧化菌的数量及其甲烷氧化活性的影响。结果表明:垃圾填埋场不同植物根围土壤中甲烷氧化茵的数量为1×10~7～1×10~8cfu·g~(-1),甲烷氧化速率为1×10~(-7)～1×10~(-8)mol·h~(-1)·g~(-1);封场时间越短,覆土层中甲烷氧化菌的数量及其甲烷氧化活性越高;甲烷氧化茵数量与甲烷氧化活性之间存在一定的正相关性,但甲烷氧化茵的数量并不是影响甲烷氧化活性的唯一因素。随着植物覆被土壤中的甲烷氧化菌的数量增多,不同种类植物根围的甲烷氧化活性差异明显,比裸露地高38%～45%。建议将小蓬草(Conyza canadensis)、稗(Echinochloa crusgalli)、佛甲草(Sedum lineare)等作为填埋场封场后的甲烷净化功能性先锋物种进行种植。
译  名：
Rhizosphere Methane Oxidation Activity in the Cover Soil of Landfill
作  者：
ZHAO Chang-wei,LIANG Ying-mei,ZHANG Li-qiu,HONG Yu (College of Environmental Sicence and Engineering,Beijing Forestry University,Beijing 100083,China)
关键词：
landfill;;methanotroph;;plant;;methane oxidation activity;;revegetation
摘  要：
Methane that is produced from the landfill can be oxidized by methane-oxidizing bacteria(methanotrophs) in the cover soils.The oxidation activities of these bacteria are affected by several factors,including plant cover.In this study,the effects of plants on the population of methanotrophs in landfill cover soil and methane oxidation activity were investigated using the hungate roll tube method and gas chromatography.The results showed that the population of methanotrophs ranged from 10~7 to 10~8 cfu·g~(-1) dried soil,and the methane oxidation activity ranged from 10~(-7) to 10~(-8) mol·h~(-1)·g~(-1) in landfill cover soils.The shorter closure time for the landfill,the higher methanotroph population and methane oxidation activity.The methane oxidation activity were positively correlated with the population of methanotrophs,but that was not the only factor to influence the activities.The methanotroph population in landfill cover soil with growing plant increased,but the methane oxidation activity of the rhizosphere soils with different plants covering were different.However,the activity in soils with plant cover was higher than that of bare soils,ranging from 38%to 45%.The functional plants for methane purification,such as Conyza canadensis,Echinochloa crusgalli and Sedum lineare,were suggested as pioneer plant species for revegetation in closed landfills.

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