BRIEF AND VIGOROUS N2O PRODUCTION BY SOIL AT SPRING THAW

被引：207

作者：

CHRISTENSEN, S ^{[1
]}

TIEDJE, JM ^{[1
]}

机构：

[1] MICHIGAN STATE UNIV,DEPT CROP & SOIL SCI,E LANSING,MI 48824

来源：

JOURNAL OF SOIL SCIENCE | 1990年 / 41卷 / 01期

关键词：

D O I：

10.1111/j.1365-2389.1990.tb00039.x

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

In 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‐emission. Copyright © 1990, Wiley Blackwell. All rights reserved

引用

页码：1 / 4

页数：4

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