摘要
内蒙古锡盟太仆寺旗天然草地转变为农田后,不同农垦年限下,土壤特性对CH4的吸收有不同的影响。结果表明:天然草地转变为农田后,降低了土壤吸收CH4的能力,CH4的吸收量随开垦年限的增加而逐渐降低,但垦殖20年以上的农田土壤对CH4累积吸收量差异不明显。相关分析表明:土壤有机碳含量、全氮含量是影响土壤CH4吸收的主要因子。
CH4 Absorption of soil properties from natural grassland in Taipusi County,Inner Mongolia is studied with laboratory incubation method.Findings show that: CH4 absorption was reduced significantly after grassland was changed into cropland;however for croplands over 20 years,it makes little difference.For natural grassland,CH4 absorption of soil decreased respectively.Experimental result and analysis indicate that: soil organic carbon,total nitrogen are main influential factors of CH4 absorption of soil.
出处
《环境与发展》
2011年第3期36-38,共3页
Environment & Development
关键词
天然草地
农垦年限
土壤特性
CH4吸收
natural grassland
reclamation years
soil properties
CH4 absorption
