Jingyi Yang, Ph.D.

Image Jingyi Yang
Soil Scientist, Nutrient Modeller in Agroecosystems | Agronome pédologue et modélisateur d’éléments nutritifs dans les écosystèmes agricoles

Dr. Jingyi Yang is a soil scientist and nutrient modeller in agroecosystem in the AAFC Harrow Research and Development Centre where he studies agro-environmental health with a special interest in nitrogen (N) modelling at both regional and field scales. At the regional scale, his research is in the development of a Canadian Agriculture Nitrogen Budget (CANB-Reactive N) model to estimate residual soil N and N losses from gas (N2O, NH3) emissions & nitrate (NO3) leaching. At the field scale, his research is in modeling crop growth, greenhouse gas emissions, soil carbon, N and water dynamics for various field managements on crop production and environmental risks using the DSSAT and DNDC models.

Current research and/or projects

Development of a Canadian Agricultural Nitrogen Budget (CANB- Reactive N) model to simulate two Agroenvironmental indicators: (1) Residual Soil Nitrogen (RSN) and (2) Indicator of Risk of Water Contamination by Nitrogen (IROWCN) in Canadian farmland

Assessing crop growth and soil N loss (N2O, NO3) and water dynamics using dynamic crop-soil models, DNDC and DSSAT

Research and/or project statements

The CANB-Reactive N project reports the progress of two Agro-environmental health indicators from 1981 to 2016 (or to the future census years, 2021, 2026 etc.)

The DNDC and DSSAT assessment project predicts the soil N loss in various management practices and rotations, then addresses best cropping methods to minimize N loss from field crop

Professional activities / interests

Model development using Intel Fortran (i.e., CANB, CANB-Reactive N, Ammonia-DSS)

Developing an EasyGrapher software to graph CANB and DSSAT models outputs using MS Visual Basic

Applied statistics in agriculture

Sensitivity analysis of crop yields and soil nutrients to model input parameters

Data handling and soil nutrient mapping using ArcGIS

Developing input data format programs for the CANB model from various public data sources

Education and awards

Outstanding Profile Award in the Professional category, Fairchild TV, Toronto, Canada, 2017

Ph.D. Soil Science and Modelling, The University of Reading, UK. 1999

MS.c. Soil Fertility and Management, China Agricultural University, China. 1989

BS.c. Soil Science and Agro-chemistry, Jilin Agricultural University, China. 1982

International experience and/or work

Worked as a teaching assistant, lecturer and associate professor at Jilin Agricultural University from 1982-1995

Key publications

  1. Jiang, R., He, W., He, L., Yang, J.Y., Qian, B., Zhou, W., He, P. (2021). Modelling adaptation strategies to reduce adverse impacts of climate change on maize cropping system in Northeast China. Scientific Reports, [online] 11(1), http://dx.doi.org/10.1038/s41598-020-79988-3

    2021 - View publication details

  2. Banger, K., Wagner-Riddle, C., Grant, B.B., Smith, W.N., Drury, C., Yang, J. (2020). Modifying fertilizer rate and application method reduces environmental nitrogen losses and increases corn yield in Ontario. Science of the Total Environment, [online] 722 http://dx.doi.org/10.1016/j.scitotenv.2020.137851

    2020 - View publication details

  3. Yang XM, Drury C, Reynolds D, Yang JY, Reeb M. 2019. Legume Cover Crops Boost Nitrogen to Corn during a 3-Year Transition to an Organic Cropping. 74th SWCS Annual meeting, July 28-31, 2019. Pittsburgh, PA

    2019 - View publication details

  4. The corn yields from an on-going organic cropping trial were presented and discussed. This study was characterized with using summer-seeded legume cover crops as the primary nitrogen (N) source for the corn in soybean-winter wheat-corn rotation in southern Ontario.

    2019 - View publication details

  5. Yang, J.Y., Yang, X.M., Drury, C.F., Liu, S. 2019. Simulating maize yield and soil inorganic N dynamics in South Ontario using the DSSAT model. Oral presentation In: SSSA International Soils Meeting, Jan. 6-9, 2019, in San Diego, California

    2019 - View publication details

  6. Yang, J.Y., Drury, C., Yang, X.M. 2019. Modelling Ammonia Emission from Nitrogen Fertilizer to Canadian Farmland from 1981-2016. Poster presentation In: SSSA International Soils Meeting, San Diego California 2019/01/06 - 2019/01/09.

    2019 - View publication details

  7. He, W., Yang, J.Y., Qian, B., Drury, C.F., Hoogenboom, G., He, P., Lapen, D., Zhou, W. (2018). Climate change impacts on crop yield, soil water balance and nitrate leaching in the semiarid and humid regions of Canada. PLoS ONE, [online] 13(11), http://dx.doi.org/10.1371/journal.pone.0207370

    2018 - View publication details

  8. He, W., Jiang, R., He, P., Yang, J., Zhou, W., Ma, J., Liu, Y. (2018). Estimating soil nitrogen balance at regional scale in China's croplands from 1984 to 2014. Agricultural Systems, [online] 167 125-135. http://dx.doi.org/10.1016/j.agsy.2018.09.002

    2018 - View publication details

  9. Jarecki, M., Grant, B., Smith, W., Deen, B., Drury, C., VanderZaag, A., Qian, B., Yang, J., Wagner-Riddle, C. (2018). Long-term trends in corn yields and soil carbon under diversified crop rotations. Journal of Environmental Quality, [online] 47(4), 635-643. http://dx.doi.org/10.2134/jeq2017.08.0317

    2018 - View publication details

  10. Yang, J.Y., Drury, C.F., Yang, X.M. 2018. Simulating Reactive Nitrogen in Canadian Farmland from 1981 to 2011. Oral Presentation In: The 9/t/h International Congress on Environmental Modelling and Software Fort Collins Colorado 2018/0625 - 2018/06/29.

    2018 - View publication details

  11. Yang, J.Y., Drury, C.F., Yang, X.M. 2018. Simulating ammonia emission from fertilizer application to Canadian farmland. Oral presentation In: 9th international congress on Environmental Modelling and Software. Fort Collins, Colorado 2018/06/25-2018/06/29

    2018 - View publication details

  12. Xueming Yang, Craig Drury, Dan Reynolds, Jingyi Yang, Mary-Anne Reeb. Winter-hardy legumes: important non-fertilizer N sources for corn in soybean-wheat-corn rotation. 2018 Joint Meeting of the CGU-CSSS-CIG-CSAFM-ESSSA, June 10-14, 2018, Niagara Falls, ON.

    2018 - View publication details

  13. Zhang, L., Yang, X., Drury, C., Chantigny, M., Gregorich, E., Miller, J., Bittman, S., Dan Reynolds, W., Yang, J. (2018). Infrared spectroscopy estimation methods for water-dissolved carbon and amino sugars in diverse Canadian agricultural soils. Canadian Journal of Soil Science, [online] 98(3), 484-499. http://dx.doi.org/10.1139/cjss-2018-0027

    2018 - View publication details

  14. He, W., Yang, J.Y., Drury, C.F., Smith, W.N., Grant, B.B., He, P., Qian, B., Zhou, W., Hoogenboom, G. (2018). Estimating the impacts of climate change on crop yields and N2O emissions for conventional and no-tillage in Southwestern Ontario, Canada. Agricultural Systems, [online] 159 187-198. http://dx.doi.org/10.1016/j.agsy.2017.01.025

    2018 - View publication details

  15. Canadian Society of Soil Science Annual Meeting 2017 June 10 - June 14, 2017 | Peterborough, Ontario

    2017 - View publication details

  16. Yang, J.Y., Drury, C.F. 2017. Developing a Reactive Nitrogen Model for Canadian Agricultural Land. Oral presentation In: The 72th Soil Water Conservation Service International Annual Conference Madison, Wisconsin Madison 2017/07/30 - 2017/08/02.

    2017 - View publication details

  17. Yang, J.Y., Drury, C.F., Yang, X.M., Reid, K. 2017. Developing a fertilizer and manure nitrogen database for crops in Canada. Oral presentation In: 2017 Annual Meeting of Canadian Society of Soil Science, The Trent University, Peterborough, Ontario 2017/06/10 - 2017/06/14

    2017 - View publication details

  18. Yang, J.Y., Drury, C.F. He, W.T., Smith, W.N., Grant, B.B., He, P., Qian, B., Zhou, W., Hoogenboom, G. 2017. Evaluating the impacts of climate change on crop yields and N2O emissions in Southwestern Ontario using the DNDC model. Poster presentation In: The annual meeting of Canadian Society of Soil Science, Trent University, Peterborough 2017/06/10 - 2017/06/14.

    2017 - View publication details

  19. 2017 Canadian Society of Soil Science Annual Meeting, Peterborough Ontario, Canada

    2017 - View publication details

  20. Soybean-winter_wheat-corn rotation is common for in humid s-Ontario. The objectives of this study were to determine: (1) how much nitrogen can be scavenged in legume cover crop; (2) what is the contribution of cover crop nitrogen to the yield of following corn. The cover crops were planted into the soil after winter wheat harvest, including Crimson clover (CC), hairy vetch (HV), red clover (RC), a non-cover crop conventional control (CKC) and a non-cover crop organic control (CKO). This study (2013-2016) was arranged in a randomized complete block design with 4 replicates on a sandy loam. No synthetic nitrogen fertilizer was added to the cover crop and CKO plots. One set of cover crop biomass samples were collected at the first killing-frost and another set was collected in following year before corn planting. At freeze-up, the amounts of total nitrogen in aboveground biomass were 126, 123, and 76 kg/ha, respectively, in CC, HV and RC treatments. The nitrogen contents in plant aboveground biomass changed to 104, 283 and 180 kg/ha in CC, HV, and RC plots before corn planting. The corn grain yields (3 year average) were 14525 kg/ha for the CKC and only 6181 kg/ha for the CKO. In comparison, the corn grain yields were 11762, 12765, and 12282 kg/ha for the CC, HV RC treatments, respectively. Without the use of synthetic N fertilizer, growing CC in the fallow seasons after winter wheat attained 81% of the corn grain yield of the CKC and growing HV and RC gained 88% and 86%, respectively, of the corn grain yield in the CKC achieved which received 160 kg N/ha. The CC, HV and RC can deliver significant amount of N to corn and the HV and RC performed better than the CC in term of N benefits to corn yield.

    2017 - View publication details

Research facility

2585 County Road 20
Harrow, ON N0R 1G0


Adjunct professor, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China



Other languages

Mandarin Chinese