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Estimating the impacts of climate change on crop yields and N2O emissions for conventional and no-tillage in Southwestern Ontario, Canada

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Jan 2018 United States Publisher:Elsevier BVJournal:Agricultural Systems, volume 159, pages 187-198 (issn: 0308-521X,

Authors: Key Laboratory of Plant Nutrition and Fertilizers, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China ( host institution ); He, Wentian ( author ); Yang, J.Y. ( author ); Drury, C.F. ( author ); Smith, W.N. ( author ); Grant, B.B. ( author ); He, Ping ( author ); +3 Authors

doi: 10.1016/j.agsy.2017.01.025

Estimating the impacts of climate change on crop yields and N2O emissions for conventional and no-tillage in Southwestern Ontario, Canada

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Abstract

Abstract Accurately predicting the impacts of higher temperatures, different precipitation rates and elevated CO2 concentrations on crop yields and GHG emissions is required in order to develop adaptation strategies. The objectives of this study were to calibrate and evaluate a regionalized denitrification-decomposition (DNDC) model using measured crop yield, soil temperature, moisture and N2O emissions, and to explore the impacts of climate change scenarios (Representative Concentration Pathways (RCP) 4.5 and RCP 8.5) on crop yields and N2O emissions in Southwestern Ontario, Canada. This simulation study was based on a winter wheat-maize-soybean rotation under conventional tillage (CT) and no tillage (NT) practices at Woodslee, Ontario, Canada. The model was calibrated using various statistics including the d index (0.85–0.99), NSE (Nash-Sutcliffe efficiency, NSE > 0) and nRMSE (normalized root mean square error, nRMSE

Country

United States

Related Organizations

Institute of Agricultural Resources and Regional Planning
China (People's Republic of)
Agriculture and Agriculture-Food Canada
Canada
Harrow Research and Development Centre
Canada
Harrow Research and Development Centre
Canada
Chinese Academy of Agricultural Sciences
China (People's Republic of)

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Keywords

DNDC model, Nitrous oxide emissions, Soil temperature, Climate change, Crop yield, Moisture

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