Effects of climate and management intensity on nitrous oxide emissions in grassland systems across Europe

被引:240
作者
Flechard, C. R.
Ambus, P.
Skiba, U.
Rees, R. M.
Hensen, A.
van Amstel, A.
van den Pol-van Dasselaar, A.
Soussana, J-F
Jones, M.
Clifton-Brown, J.
Raschi, A.
Horvath, L.
Neftel, A.
Jocher, M.
Ammann, C.
Leifeld, J.
Fuhrer, J.
Calanca, P.
Thalman, E.
Pilegaard, K.
Di Marco, C.
Campbell, C.
Nemitz, E.
Hargreaves, K. J.
Levy, P. E.
Ball, B. C.
Jones, S. K.
van de Bulk, W. C. M.
Groot, T.
Blom, M.
Domingues, R.
Kasper, G.
Allard, V.
Ceschia, E.
Cellier, P.
Laville, P.
Henault, C.
Bizouard, F.
Abdalla, M.
Williams, M.
Baronti, S.
Berretti, F.
Grosz, B.
机构
[1] Agroscope Reckenholz Tanikon, Res Stn ART, Air Pollut Climate Grp, CH-8046 Zurich, Switzerland
[2] Riso Natl Lab, DK-4000 Roskilde, Denmark
[3] Edinburgh Res Stn, CEH, Penicuik EH26 0QB, Midlothian, Scotland
[4] SAC, Edinburgh EH9 3JG, Midlothian, Scotland
[5] ECN, NL-1755 ZG Petten, Netherlands
[6] Univ Wageningen & Res Ctr, Environm Syst Anal Grp, NL-6700 HB Wageningen, Netherlands
[7] Univ Wageningen & Res Ctr, Anim Sci Grp, NL-8200 AB Lelystad, Netherlands
[8] INRA, UR874 Grassland Ecosyst Res, F-63100 Clermont Ferrand, France
[9] INRA, INA PG, UMR1091, Environm Grandes Cultures, F-78850 Thiverval Grignon, France
[10] INRA, UMR Microbiol Sols, F-21065 Dijon, France
[11] Univ Dublin Trinity Coll, Dublin 2, Ireland
[12] IGER, Aberystwyth SY23 3EB, Dyfed, Wales
[13] IATAA, I-50144 Florence, Italy
[14] Eotvos Lorand Univ, H-1177 Budapest, Hungary
[15] Hungarian Meteorol Serv, H-1181 Budapest, Hungary
基金
英国自然环境研究理事会;
关键词
nitrous oxide; N2O flux; grassland; grazing; fertilizer; emtission factor; N2O EMISSIONS; FERTILIZED GRASSLAND; AGRICULTURAL SOILS; N FERTILIZER; DENITRIFICATION; EXCHANGE; CH4; FLUXES; BUDGET; GASES;
D O I
10.1016/j.agee.2006.12.024
中图分类号
S [农业科学];
学科分类号
09 ;
摘要
Soil/atmosphere exchange fluxes of nitrous oxide were monitored for a 3-year period at 10 grassland sites in eight European countries (Denmark, France, Hungary, Ireland, Italy, The Netherlands, Switzerland and United Kingdom), spanning a wide range of climatic, environmental and soil conditions. Most study sites investigated the influence of one or several management practices on N2O exchange, such as nitrogen fertilization and grazing intensity. Fluxes were measured using non-steady state chambers at most sites, and alternative measurement techniques such as eddy covariance and fast-box using tunable diode laser spectroscopy were implemented at some sites. The overall uncertainty in annual flux estimates derived from chamber measurements may be as high as 50% due to the temporal and spatial variability in fluxes, which warrants the future use of continuous measurements, if possible at the field scale. Annual emission rates were higher from intensive than from extensive grasslands, by a factor 4 if grazed (1.77 versus 0.48 kg N2O-N ha(-1) year(-1)) and by a factor 3 if ungrazed (0.95 versus 0.32 kg N2O-N ha(-1) year(-1)). Annual emission factors for fertilized systems were highly variable, ranging from 0.01% to 3.56%. but the mean emission factor across all sites (0.75%) was substantially lower than the IPCC default value of 1.25%. Emission factors for individual fertilization events increased with soil temperature and were generally higher for water-filled pore space values in the range 60-90%, though precipitation onto dry soils was also shown to lead to high losses of N2O-N from applied fertilizer. An empirical, multiple regression model to predict N2O emission factors on the basis of soil temperature, moisture and rainfall is developed, explaining half of the variability in observed emission factors. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:135 / 152
页数:18
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