Comparing measured and Expert-N predicted N2O emissions from conventional till and no till corn treatments

Nutrient Cycling in Agroecosystems - Tập 66 Số 2 - Trang 107-118 - 2003
Kaharabata, S.K.1, Drury, C.F.2, Priesack, E.3, Desjardins, R.L.1, McKenney, D.J.2, Tan, C.S.2, Reynolds, D.2
1Research Branch, Agriculture and Agri-Food Canada, Ottawa, Canada
2Greenhouse & Processing Crops Research Centre, Agriculture and Agri-Food Canada, Harrow, Canada
3GSF Institute of Soil Ecology, Neuherberg, Germany

Tóm tắt

Agricultural soils are a major source of the greenhouse gas nitrous oxide (N2O). Nitrous oxide emission models can be used to predict the effectiveness of N2O mitigation strategies; however, these models require rigorous testing before they can be used with confidence. Expert-N, a modular process based N2O emission model, was tested to determine its ability at predicting nitrogen (N) cycling in the soil–plant–atmosphere system under Canadian agroclimatic conditions. Ancillary data and N2O emissions were collected/measured from a corn cultivated clay-loam soil that was under different tillage and red clover treatments. The treatments were conventional till (CT) with and without red clover (rc) underseeded in the previous year's wheat crop (CT-Crc and CT-C, respectively), and no till (NT) with and without red clover underseeded in the previous year's wheat crop (NT-Crc and NT-C, respectively). Expert-N provided good estimates of N2O emissions, and predictions correlated well (positive) with the measured emissions (r 2∼ 0.55–0.83). There was no statistically significant difference between measured and predicted daily emissions. The predicted emissions, integrated over the growing season (25 May–4 October, 1995), were 0.56, 0.57, 0.62, and 0.62 kg N2O-N ha−1 for CT-C, CT-Crc, NT-C, and NT-Crc, respectively. The measured emissions over the same period were 1.29, 1.07, 0.96, and 1.04 kg N2O-N ha−1 for CT-C, CT-Crc, NT-C, and NT-Crc, respectively. The modelled emissions underestimated the integrated measured emissions by ∼ 35–55%; however, the integrated measured emissions had an estimated uncertainty of ±35%. The model provided good predictions of the soil temperatures, moisture contents, and soil nitrate levels with no significant difference from the measured data. Correlations between modelled and measured values for these soil properties in the first 30 cm soil layer were positive and high with r 2∼ 0.71–0.93.

Từ khóa


Tài liệu tham khảo

citation_journal_title=Can. J. Plant Sci.; citation_title=A new Versatile Soil Moisture Budget; citation_author=W. Baier, G.W. Robertson; citation_volume=46; citation_publication_date=1966; citation_pages=299-315; citation_id=CR1

citation_journal_title=Can. J. Soil Sci.; citation_title=Soil moisture modelling–conception and evolution of the VSMB; citation_author=W. Baier, G.W. Robertson; citation_volume=76; citation_publication_date=1996; citation_pages=251-261; citation_id=CR2

citation_journal_title=Soil Tillage Res.; citation_title=Field N2O, CO2 and CH4 fluxes in relation to tillage, compaction and soil quality in Scotland; citation_author=B.C. Ball, A. Scott, J.P. Parker; citation_volume=53; citation_publication_date=1999; citation_pages=29-39; citation_id=CR3

citation_title=The Versatile Soil Moisture Budget (VB) Software and Reference Manual Version 4.0; citation_publication_date=1998; citation_id=CR4; citation_author=J.B. Boisvert; citation_author=J.A. Dyer; citation_author=D. Brewin; citation_author=W. Baier; citation_publisher=Agriculture and Agri-Food Canada

citation_journal_title=Soil Sci. Soc. Am. J.; citation_title=Ammonium fixation, reloam lease, nitrification, and immobilization in high-and low-fixing soils; citation_author=C.F. Drury, E.G. Beauchamp; citation_volume=55; citation_publication_date=1991; citation_pages=125-129; citation_id=CR5

citation_journal_title=Agron. J.; citation_title=Red clover and tillage influences on soil temperature, water content, and corn emergence; citation_author=C.F. Drury, C.S. Tan, T.W. Welacky, T.O. Oloya, A.S. Hamill, S.E. Weaver; citation_volume=91; citation_publication_date=1999; citation_pages=101-108; citation_id=CR6

citation_journal_title=Soil Biol. Biochem.; citation_title=Relationships between denitrification, microbial biomass and indigenous soil properties; citation_author=C.F. Drury, D.J. McKenney, W.I. Findlay; citation_volume=23; citation_publication_date=1991; citation_pages=751-755; citation_id=CR7

citation_title=Expert-N, a building block system How of nitrogen models as a resource for advice, research, water management and policy; citation_inbook_title=Integrated Soil and Sediment Research: A Basis for Proper Protection; citation_publication_date=1993; citation_pages=503-507; citation_id=CR8; citation_author=T. Engel; citation_author=E. Priesack; citation_publisher=Kluwer Academic Publishers

citation_journal_title=Nutr. Cycling Agroecosyst.; citation_title=Comparison of N2O emissions from soils at three temperate agricultural sites: simulations of year-round measurements by four models; citation_author=S.E. Frolking, A.R. Mosier, D.S. Ojima, C. Li, W.J. Parton, C.S. Potter; citation_volume=52; citation_publication_date=1998; citation_pages=77-105; citation_id=CR9

citation_title=Ecosys. Global Change and Terrestrial Ecosystems Task 3.3.1 Soil Organic Matter Network (SOMNET): 1996 Model and Experimental Metadata; citation_publication_date=1996; citation_id=CR10; citation_author=R.F. Grant; citation_publisher=GCTE Focus 3 Office, NERC Centre for Ecology and Hydrology

citation_journal_title=Global Biogeochem. Cycles; citation_title=Mathematical modelling of nitrous oxide emissions from an agricultural field during spring thaw; citation_author=R.F. Grant, E. Pattey; citation_volume=13; citation_publication_date=1999; citation_pages=679-694; citation_id=CR11

citation_title=Practical Handbook of Agricultural Science; citation_publication_date=1990; citation_id=CR12; citation_author=A.A. Hanson; citation_publisher=CRC Press Inc.

citation_journal_title=J. Soil Sci.; citation_title=A retentative function for use in soil water simulation models; citation_author=J.L. Hutson, A. Cass; citation_volume=38; citation_publication_date=1987; citation_pages=105-113; citation_id=CR13

citation_journal_title=Soil Use Manage.; citation_title=Simulating nitrogen dynamics in soils using a deterministic model; citation_author=J.L. Hutson, R.J. Wagenet; citation_volume=7; citation_publication_date=1991; citation_pages=74-78; citation_id=CR14

citation_title=LEACHM: Leaching Estimation And Chemistry Model: A process-based model of water and solute movement, transformations, plant uptake and chemical reactions in the unsaturated zone; citation_publication_date=1992; citation_id=CR15; citation_author=J.L. Hutson; citation_author=R.J. Wagenet; citation_publisher=Department of Soil, Crop and Atmospheric Sciences, Cornell University

citation_journal_title=Agric. Ecosyst. Environ.; citation_title=Simulated nitrogen dynamics and losses in a layered agricultural soil; citation_author=H. Johnsson, L. Bergstrom, P.-E. Jansson, K. Paustian; citation_volume=18; citation_publication_date=1987; citation_pages=333-356; citation_id=CR16

citation_title=CERES-Maize. A Simulation Model of Maize Growth and Development; citation_publication_date=1986; citation_id=CR17; citation_publisher=Texas A&M University Press

citation_journal_title=J. Geophys. Res.; citation_title=A model of nitrous oxide evolution from soil driven by rainfall events: I. model structure and sensitivity; citation_author=C. Li, S. Frolking, T.A. Frolking; citation_volume=97; citation_publication_date=1992; citation_pages=9759-9776; citation_id=CR18

citation_journal_title=Can. J. Soil Sci.; citation_title=Effects of cropping system on structure of Brookston clay loam in long term experimental plots at Woodslee Ontario; citation_author=J.A. McKeague, C.A. Fox, J.A. Stone, R. Protz; citation_volume=67; citation_publication_date=1987; citation_pages=571-584; citation_id=CR19

citation_journal_title=Soil Sci. Soc. Am. J.; citation_title=Denitrification and mineralization in soil amended with legume, grass, and corn residues; citation_author=D.J. McKenney, S.W. Wang, C.F. Drury, W.I. Findlay; citation_volume=57; citation_publication_date=1993; citation_pages=1013-1020; citation_id=CR20

citation_journal_title=Nutr. Cycling Agroecosyst.; citation_title=Closing the global N2O budget: nitrous oxide emissions through the agricultural nitrogen cycle; citation_author=A. Mosier, C. Kroeze, C. Nevison, O. Oenema, S. Seitzinger, O. van Cleemput; citation_volume=52; citation_publication_date=1998; citation_pages=225-248; citation_id=CR21

citation_title=Parametrisation of soil nitrogen transport models by use of laboratory and field data; citation_inbook_title=Modeling Carbon and Nitrogen Dynamics for Soil Management; citation_publication_date=2001; citation_pages=461-484; citation_id=CR22; citation_author=E. Priesack; citation_author=S. Achatz; citation_author=R. Stenger; citation_publisher=CRC Press Inc.

citation_journal_title=Soil Sci. Soc. Am. J.; citation_title=Soil carbon and nitrogen dynamics following application of pig slurry for the 19th consecutive year: II. Nitrous oxide fluxes and mineral nitrogen; citation_author=P. Rochette, E. van Bochove, D. Prevost, D.A. Angers, D. Cote, N. Bertrand; citation_volume=64; citation_publication_date=2000; citation_pages=1396-1403; citation_id=CR23

citation_journal_title=J. Geophys. Res.; citation_title=Micrometeorological and chamber methods for measurement of nitrous oxide fluxes between soils and the atmosphere: Overview and conclusions; citation_author=K.A. Smith, H. Clayton, J.M.R. Arah, S. Christensen, P. Ambus, D. Fowler; citation_volume=99D8; citation_publication_date=1994; citation_pages=16541-16548; citation_id=CR24

Stenger R., Priesack E., Barkle G. and Sperr C. 1999. Expert-N. A tool for simulating nitrogen and carbon dynamics in the soil-plant-atmosphere system. In: Tomer M., Robinson M. and Gielen G. (eds), NZ Land Treatment Collective, Proceedings of Technical Session 20: Modelling of Land Treatments Systems. New Plymouth, 14–15 October 1999., pp. 19–28.

citation_title=Soil water, solute, and plant growth simulations; citation_publication_date=1980; citation_id=CR26; citation_author=W.R. Tillotson; citation_author=C.W. Robbins; citation_author=R.J. Wagenet; citation_author=R.J. Hanks; citation_publisher=Utah State Agr. Exp. Stn.

citation_journal_title=Water Resources Res.; citation_title=Electromagnetic determination of soil water content: measurement in coaxial transmission lines; citation_author=G.C. Topp, J.L. Davis, A.P. Annan; citation_volume=16; citation_publication_date=1980; citation_pages=574-582; citation_id=CR27

citation_journal_title=Nutr. Cycling Agroecosyst.; citation_title=Nitrous oxide emissions from agricultural fields during winter and spring thaw as affected by management practices; citation_author=C. Wagner-Riddle, G.W. Thurtell; citation_volume=52; citation_publication_date=1998; citation_pages=151-163; citation_id=CR28

citation_journal_title=Can. J. Soil Sci.; citation_title=Estimates of nitrous oxide emissions from agricultural fields over 28 months; citation_author=C. Wagner-Riddle, G.W. Thurtell, G.E. Kidd, E.G. Beauchamp, R. Sweetman; citation_volume=77; citation_publication_date=1997; citation_pages=135-144; citation_id=CR29

Zhang T.Q., Drury C.F. and Reynolds W.D. 2000. Nitrogen mineralization as influenced by soil compaction and legume amendment. Soil Sci. Soc. Am. Annual Meeting 5–9 Nov. 2000, Minneapolis, Minnesota.

Thông tin
Thông tin xuất bản

Nutrient Cycling in Agroecosystems

Tập 66 Số 2

107-118

Thông tin tác giả