Dark aerobic methane emission associated to leaf factors of two Acacia and five Eucalyptus species

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• 作者：Makoto Watanabe^a ; ¹ ; ^{nab0602@for.agr.hokudai.ac.jp} ; Yoko Watanabe^b ; Yong Suk Kim^a ; ¹ ; ² ; Takayoshi Koike^a ; ^{tkoike@for.agr.hokudai.ac.jp}
• 关键词：Aerobic methane emission ; Correlation analysis ; Evergreen tree species ; Greenhouse gas ; Leaf mass per area ; Leaf structural trait
• 刊名：Atmospheric Environment
• 出版年：2012
• 期刊代码：11_13522310
• 类别：env
• 出版时间：July, 2012
• 卷：54
• 期：Complete
• 页码：277-281
• 文件大小：503 K

摘要

We sought the biological factors determining variations in the methane emission rates from leaves of different plant species under aerobic conditions. Accordingly, we studied relations between the methane emission rate and leaf traits of two Acacia and five Eucalyptus species. We grew seedlings of each species in a glasshouse and measured the methane emission rate of the detached leaves under dark conditions at 30聽掳C. At the same time we measured the leaf mass per area (LMA), water content, and concentrations of carbon and nitrogen. There was no correlation between the leaf nitrogen concentration and the methane emission rate. This is consistent with previous findings that enzymatic processes do not influence methane emission. We found a significant negative correlation between LMA and the methane emission rate. Our results suggest that leaf structure is primarily responsible for differences in the rates of aerobic methane emission from leaves of different species.