Greenhouse gas emissions (N2O, CO2 and CH4) from three forest soils near Vienna (Austria) with different water and nitrogen regimes

被引：0
|
作者：
Hahn, M [1 ]
Gartner, K [1 ]
Zechmeister-Boltenstern, S [1 ]
机构：
[1] Forstliche Bunderesversuchsanstalt, Inst Forstokol, A-1131 Vienna, Austria
来源：
BODENKULTUR | 2000年 / 51卷 / 02期
关键词：
denitrification; nitrification; nitrous oxide; methane; carbon dioxide;
D O I：
暂无
中图分类号：
S [农业科学];
学科分类号：
09 ;
摘要：
Greenhouse gas production from forest soils was measured during the 1997 vegetation period using closed chambers. Klausenleopoldsdorf 1 and Schottenwald differed significantly in NO3- and NH4+ concentrations but nor in climatic conditions and soil type, while Klausenleopoldsdorf 2 was characterized by high soil water content. N2O emission rates were highest at Schottenwald (70.0 mu g N2O-N m(-2) h(-1)), which was mainly due to higher NO3- availability. The lower N2O emissions at Klausenleopoldsdorf 2 (15.1 mu g N2O-N m(-2) h(-1)) indicated that denitrification proceeded entirely to N-2, conditioned by high soil water content. Klausenleopoldsdorf 1 and Schottenwald showed similar CO2 emissions and functioned as a sink for methane. At Klausenleopoldsdorf 2 methane was produced (30.7 mu g CH4 m(-2) h(-1)) and CO2 emissions were low, which can be attributed to anaerobic soil conditions.
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页码：115 / 125
页数：11
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