Advances of study on atmospheric methane oxidation (consumption) in forest soil

编号 zgly0000302951

文献类型 期刊论文

文献题名 Advances of study on atmospheric methane oxidation (consumption) in forest soil

学科分类 220.1040;森林土壤学

作者 WANGChen-rui  SHIYi  YANGXiao-ming  WUJie  YUEJin 

作者单位 KeyLaboratoryofTerrestrialEcologicalProcess 

母体文献 Journal of Forestry Research;林业研究: 英文版 

年卷期 2003,14(3)

页码 230-238

年份 2003 

分类号 S714  X16 

关键词 森林土壤  氧化  大气甲烷  全球变暖  土壤碳氮比  土壤水分  树种 

文摘内容 Next to CO2, methane (CH4) is the second important contributor to global warming in the atmosphere and global atmospheric CH4 budget depends on both CH4 sources and sinks. Unsaturated soil is known as a unique sink for atmospheric CH4 in terrestrial ecosystem. Many comparison studies proved that forest soil had the biggest capacity of oxidizing atmospheric CH4 in various unsaturated soils. However, up to now, there is not an overall review in the aspect of atmospheric CH4 oxidation (consumption) in forest soil. This paper analyzed advances of studies on the mechanism of atmospheric CH4 oxidation, and related natural factors (Soil physical and chemical characters, temperature and moisture, ambient main greenhouse gases concentrations, tree species, and forest fire) and anthropogenic factors (forest clear-cutting and thinning, fertilization, exogenou saluminum salts and atmospheric deposition, adding biocides, and switch of forest land use) in forest soils. It was believed that OH4 consumption rate by forest soil was limited by diffusion and sensitive to changes in water status and temperature of soil.CH4 oxidation was also particularly sensitive to soil C/N, Ambient CO2, CH4 and N2O concentrations, tree species and forest fire.In most cases, anthropogenic disturbances will decrease atmospheric CH4 oxidation, thus resulting in the elevating of atmos-pheric CH4. Finally, the author pointed out that our knowledge of atmospheric CH4 oxidation (consumption) in forest soil was insufficient. In order to evaluate the contribution of forest soils to atmospheric CH4 oxidation and the role of forest played in the process of global environmental change, and to forecast the trends of global warming exactly, more researchers need to studiesfurther on CH4 oxidation in various forest soils of different areas。