中亚热带植物排放甲烷研究初报  

Methane Emission from Plants:A Case in the Mid-Subtropics of China

作　　者：易黎明[1] 谢锦升[2] 杨燕华[1] 高玉春[1] 杨玉盛[1] 

机构地区：[1]湿润亚热带山地生态国家重点实验室培育基地,福州350007 [2]福建师范大学地理科学学院,福州350007

出　　处：《亚热带资源与环境学报》2011年第1期26-31,共6页Journal of Subtropical Resources and Environment

基　　金：国家自然科学基金(30970486)

摘　　要：甲烷(CH4)是大气中第二大温室气体,近年有研究发现在有氧条件下陆生植物也能排放CH4.本研究对中亚热带51种树木离体叶片在有氧环境下进行室内培养,发现21种植物能排放CH4,CH4排放速率范围为0.11～1.37 ngCH4.g-1 DW.h-1,平均排放速率为0.59ngCH4.g-1DW.h-1.植物是否排放CH4及其排放速率与观测条件密切相关.观测的51种植物中包括40种乔木树种和11种灌木树种,分别有15种和6种植物可排放CH4,CH4平均排放速率分别为0.69 CH4.g-1DW.h-1和0.30 ngCH4.g-1DW.h-1,且乔木和灌木之间存在极显著差异(P<0.05).CH4 is the second most important greenhouse gas in the atmosphere,and recent findings suggest that the terrestrial plants can emit CH4 under aerobic condition.Fresh detached leaves from 51 trees specie in the mid-subtropics of China were incubated in the laboratory under aerobic condition.The CH4 emission rates were measured and the results showed that 21 out of 51 species could release CH4,ranging from 0.11 to 1.37 ngCH4·g-1DW·h-1.The mean emission rate for the 21 tree species was 0.59 ngCH4·g-1DW·h-1,being lower than previous reports,which had showed that whether the plants can emit CH4 and CH4 emission rates being closely related to observed conditions.There were 15 out of 40 arbor species and 6 out of 11 shrub species that could emit CH4,with the average rates being 0.69 ngCH4·g-1DW·h-1 and 0.30 ngCH4·g-1DW·h-1,respectively.However,there was significant difference between arbor and shrub species with regards to CH4 emission rates（P0.05）.

关 键 词：CH4排放 植物 离体叶片 室内培养 

分 类 号：Q948[生物学—植物学] S718.5[农业科学—林学]