Brief and vigorous N2O production by soil at spring thaw
作者:
S. CHRISTENSEN,
J. M. TIEDJE,
期刊:
Journal of Soil Science
(WILEY Available online 1990)
卷期:
Volume 41,
issue 1
页码: 1-4
ISSN:0022-4588
年代: 1990
DOI:10.1111/j.1365-2389.1990.tb00039.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
SUMMARYIn an acid sandy loam soil (pH 3.8), field production of N2O was two orders of magnitude higher at thaw in the spring than at any time during the rest of the year. Soil thaw in midwinter did not result in any increase in N2O flux. Soil water content remained at, or above field capacity during measurements; nitrate was added in excess. This effect could be reproduced in the laboratory: thawing soil cores at controlled temperature, nitrate and moisture yielded a large flush of N2O compared to an unfrozen control. The results indicate the importance of microbial N2O production during thaw for total annual N2O‐emissio
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