The effect of soil acidification on atmospheric methane uptake by a Maine forest soil
The effect of soil acidification on atmospheric methane uptake by a Maine forest soil
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DOI：
10.1111/j.1574-6941.2001.tb00771.x
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发表时间：
2001-01-01
影响因子：
4.2
通讯作者：
King, GM
中科院分区：
文献类型：
--
作者：
Benstead, J;King, GM
针叶阔叶混交林中甲烷氧化活性最大区域（约 5-8 厘米深）的土壤在较宽的 pH 值范围（3.5-7.5）内消耗大气中的甲烷，最佳值在 4.8 至 6.0 之间。原生土壤 pH 值 (4.4-4.8) 下的甲烷吸收速度仅略低于最佳 pH 值下的速度。在脉冲应用中向完整的土壤核心添加无机酸可减少大气甲烷消耗。抑制程度随添加酸的类型、浓度和体积而变化：在相同的土壤 pH 值下，硝酸比硫酸更具抑制性，并且随着添加酸的体积和浓度的增加，甲烷吸收量减少。尽管 1 mu mol g 鲜重 (gfw) 土壤 (-1) 的氯化铵抑制了甲烷的吸收，但随着土壤 pH 值降低到 4.4 以下，抑制程度并没有显着变化。 (C) 2001 年欧洲微生物学会联合会。由 Elsevier Science B.V. 出版。保留所有权利。
Soil from the zone of maximal methanotrophic activity (approximately 5-8 cm depth) in a mixed coniferous-hardwood forest consumed atmospheric methane over a wide pH range (3.5-7.5) with a broad optimum between 4.8 and 6.0. Methane uptake at native soil pH values (4.4-4.8) was only slightly less rapid than rates at optimal pH values. Addition of mineral acids to intact soil cores in pulsed applications decreased atmospheric methane consumption. The extent of inhibition varied with the type, concentration and volume of acid added: nitric acid was more inhibitory than sulfuric acid at an equivalent soil pH, and methane uptake decreased with increasing volumes and concentrations of added acid. Although ammonium chloride at 1 mu mol g fresh weight (gfw) soil(-1) inhibited methane uptake, the extent of inhibition did, not vary significantly with decreasing soil pH below values of 4.4. (C) 2001 Federation of European Microbiological Societies. Published by Elsevier Science B.V. All rights reserved.