植物在CH4产生、氧化和排放中的作用

摘要/Abstract

摘要： 综合评述了植物对CH₄产生、内源CH₄氧化和CH₄排放的影响.不同植物释放根系分泌物能力的不同是造成CH₄产生量差异的主要原因,而植物不同生育期分泌分泌物能力的差异是造成季节性变化的关键.植物泌O₂能力的高低和季节性变化通过影响内源CH₄的氧化来改变CH₄的排放数量.植物间通气组织数量和密度的差异及其随生育期的变化,通过影响对CH₄的传输能力来改变CH₄的排放量.因此,植物排放CH₄的通量及其季节性变化规律是由植物根系分泌分泌物能力、分泌O₂能力和传输CH₄能力综合决定的.

关键词: 植物, 分泌物, CH₄产生, CH₄氧化, CH₄排放

Abstract: The paper reviewed the role of plants in the processes of methane production, oxidation and emission in soils. It was the abilities of different plants to excrete the quantity and quality of root exudates that resulted in discrepancies of methane production among plants and in plant growing seasons. The oxygen magnitude of the downward transport through the plant aerenechyma, which, in turn, also acted as a conduit for methane from the soil to the atmosphere, affected endogenous methane oxidation capacity with plants and with plant growing seasons. Plant through changing amount and density of plant aerenchyma altered its ability to transport methane from soil to atmosphere. In addition to soil properties, flux and pattern of methane emission from soils largely depended on plant abilities to excrete exudates and oxygen, and transport methane in different plant growing seasons.

Key words: Plant, Root exudates, Methane production, Methane oxidation, Methane emission

中图分类号:

X171

丁维新, 蔡祖聪. 植物在CH₄产生、氧化和排放中的作用[J]. 应用生态学报, 2003, (8): 1379-1384.

DING Weixin, CAI Zucong . Effect of plants on methane production, oxidation and emission[J]. Chinese Journal of Applied Ecology, 2003, (8): 1379-1384.

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植物在CH₄产生、氧化和排放中的作用

Effect of plants on methane production, oxidation and emission

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