Vertical distribution and interaction of ethylene and methane in temperate volcanic forest soils
Vertical distribution and interaction of ethylene and methane in temperate volcanic forest soils
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温带火山森林土壤乙烯和甲烷的垂直分布及其相互作用
DOI：
10.1016/j.geoderma.2008.03.010
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发表时间：
2008-06
期刊：
影响因子：
6.1
通讯作者：
Wei, Jin
中科院分区：
文献类型：
--
作者：
Xu, Xingkai;Yuan, Bin;Wei, Jin
在中国东北部的3个天然温带森林林(白桦、云杉、红松与紫杉、水曲柳、蒙古栎混交林)采集了7个土层20 cm土层，研究了乙烷(C2H4)和甲烷(CH4)在温带火山林土壤中的垂直分布和相互作用，以及地下土壤中CH4的最大消耗机制。在相同初始碳浓度下，大气CH4消耗活性最大，云杉和桦树下土层CH4消耗活性最大(2.5~7.5 cm)，低于C2H4消耗活性(2.5~5 cm)。红松阔叶混交林0~20 cm土层对C2H4和CH4的消耗活动基本一致，0~2.5 cm土层对C2H4和CH4的消耗最大。云杉、桦树混交林土壤表层(0~2.50 cm)交换性NH_4~+浓度高于红松阔叶混交林(P<≤)。在淹水条件下，各林分土壤中乙烯积累量随着深度的增加而减少，在云杉和桦树下0-2.5 cm土层中，培养14d期间，μL L−1顶空间中的C2H4浓度达到最大值(P≤0.0 5)。20μL L−1的乙烯浓度降低了三种温带森林不同深度土壤中的大气CH4消耗(P≤0.05)。我们的观察结果有力地表明，森林表层C2H4和NH4+积累的循环可以抑制土壤对CH4的消耗，这是云杉和桦树地下土层甲烷营养活性最大的主要原因。
Seven soil layers within a depth of 20 cm were sampled from three natural temperate forest stands (e.g. Betula ermanii and Picea jezoensis, and Pinus koraiensis mainly mixed with Tilia amurensis, Fraxinus mandshurica and Quercus mongolica) in northeast China developed from volcanic-materials, to study the vertical distribution and interaction of ethylene (C2H4) and methane (CH4) in temperate volcanic forest soils and ambiguous mechanisms for maximum CH4consumption in subsurface soil layers. For atmospheric and elevated CH4concentrations, the maximum CH4consumption activity was localized in soil layers (2.5–7.5 cm) under spruce and birch below those (2.5–5 cm) of C2H4consumption activity at a same initial carbon concentration. However, there was a same consumption activity of C2H4and CH4in the 0–20-cm profile soils under the Korean pine and broadleaf mixed forest, and the 0–2.5-cm soil layers showed a maximum consumption of both. There was a higher exchangeable NH4+concentration in the upper soil layers (0–2.5 cm) under spruce and birch than under the Korean pine and broadleaf mixed forest (P≤0.05). Under waterlogged conditions, ethylene accumulation in the soils under each forest stand decreased with increasing depth, and maximum C2H4concentrations of approximately 15 μl l−1in the headspace during a 14-day incubation period were observed in the 0–2.5-cm soil layers under spruce and birch (P≤0.05). Ethylene concentration of 20 μl l−1decreased atmospheric CH4consumption in the soils at various depths under the three temperate forests (P≤0.05). Our observations strongly indicate that cycling of C2H4and NH4+accumulation in forest upper soil layers can inhibit the soil CH4consumption, thus being main reasons for the localization of maximum methanotrophic activity in subsurface soil layers under spruce and birch.
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DOI：
10.1128/mr.53.1.68-84.1989
发表时间：
1989-03
期刊：
Microbiological Reviews
影响因子：
--
作者：
C. Bédard;R. Knowles
通讯作者：
C. Bédard;R. Knowles
DOI：
--
发表时间：
1999
期刊：
--
影响因子：
--
作者：
D. Schimel;D. Glover;J. Melack
通讯作者：
D. Schimel;D. Glover;J. Melack
影响因子：
6.1
作者：
Xingkai Xu;K. Inubushi;K. Sakamoto
通讯作者：
Xingkai Xu;K. Inubushi;K. Sakamoto
影响因子：
4.2
作者：
Xingkai Xu;K. Inubushi
通讯作者：
Xingkai Xu;K. Inubushi
影响因子：
2
作者：
Xingkai Xu;Lin Han;Yuesi Wang;K. Inubushi
通讯作者：
Xingkai Xu;Lin Han;Yuesi Wang;K. Inubushi