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原文連結
論文資訊
- 類型：已發表論文
- 日期：2002
摘要
[1] The sustained increase in atmospheric CO2 concentration observed over the past century, and projected to continue into the next, is of great significance for atmospheric CH4. Effects of elevated CO2 on microbial methane cycling are potentially mediated by its effects on plant physiology, which include enhancement of carbon assimilation, belowground carbon allocation, and water use efficiency. To determine the importance of such changes for methane cycling, belowground factors impacting soil CH4 consumption were investigated at the Free Air Carbon Transfer and Storage (FACTS)-I site in the Duke 森林, North Carolina, in which plots have been exposed to ambient (370 ppm) or elevated (ambient + 200 ppm) CO2 since August 1996. CH4 fluxes at the soil surface, porespace concentrations of CH4,O-
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