摘要
若尔盖高原泥炭沼泽土氧化大气CH4的速率为0.97~1.69ng/(g·h),氧化速率随着土壤深度的增加而减小;而泥炭土CH4排放速率为0.37~0.61ng/(g·h).2种土壤均具有氧化8000μL/L高浓度CH4的能力,泥炭沼泽土的潜力比泥炭土的大.不同土壤层次氧化甲烷的潜力也有差异,表层土比下层土高.降水减少导致的沼泽水位下降将加强若尔盖高原沼泽土壤氧化CH4从而减少沼泽CH4排放.
The atmospheric CH4 oxidation rate of peat bog soil from the Zoige Plateau was 0.97-1.69 ng/(g×h), and decreased with increasing of the soil depth, but the discharged rate of CH4 from peat soil was 0.37-0.61 ng/(g×h). Both soils possessed the ability to oxidize high-concentration CH4 (8000 μL/L), but in general, the potential of peat bog soil was higher than that of peat soil. Different soil layers had various potential of methane oxidation. The surface layers were higher than the low layers. The falling of bog water level caused by raining decrease would strengthen the CH4 oxidation by bog soil in Zoige Plateau, thus the CH4 emissions from bog decreased.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2004年第6期646-649,共4页
China Environmental Science
基金
中国科学院知识创新工程项目(KZCX3-SW-NA-01)
关键词
甲烷氧化
泥炭土
湿地
若尔盖高原
methane oxidation
peat soil
wetland
Zoige Plateau