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Yun-Ya Yang

Principal Faculty Specialist

Principal Faculty Specialist

0117 H.J. Patterson Hall College Park, Maryland 20742


  • Nutrient Management
  • Water Quality
  • soil health
  • Environmental Science
  • Soil Chemistry
  • Edge-of-the field nutrient losses
  • Emerging Contaminants


  • Ph.D., Environmental Soil Chemistry, Colorado State University, USA
  • M.S., Soil and Environmental Sciences, National Chung Hsing University, Taiwan
  • B.S., Soil and Environmental Sciences, National Chung Hsing University, Taiwan


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Peer-Reviewed Publications:

Soil Health:

Yang, Y-Y., Goldsmith, A., Herold, I., Lecha, S., Toor, G.S. 2020. Assessing Soil Organic Carbon in Soils to Enhance and Track Future Carbon Stocks. Agronomy.10(8): 1139. DOI: 10.3390/agronomy10081139. 

Toor, G.S., Yang, Y-Y., Morris, M., Schwartz, P., Darwish, Y., Gaylord, G., Webb, K. Phosphorus Pools in Soils Under Rotational and Continuous Grazed Pastures. Agrosystems. 3(1): e20103. DOI: 10.1002/agg2.20103.

Urban Water Quality:

Yang, Y-Y., Asal, S., Toor, G.S. 2020. Residential Catchments to Coastal Waters: Forms, Fluxes, and Mechanisms of Phosphorus Transport. Science of the Total Environment. 142767.

Jani, J., Lusk, M.G., Yang, Y-Y., Toor, G.S. 2020. Wet Season Nitrogen Export from A Residential Stormwater Pond. PLoS ONE. 15(4): e0230908. DOI: 10.1371/journal.pone.0230908.

Jani, J., Yang, Y-Y., Lusk, M.G., Toor, G.S. 2020. Composition of Nitrogen in Urban Residential Stormwater Runoff: Concentrations, Loads, and Source Characterization of Nitrate and Organic Nitrogen. PLoS ONE. 15(2): e0229715. DOI: 10.1371/journal.pone.0229715.

Yang, Y-Y., Toor, G.S. 2018. Stormwater Runoff Driven Phosphorus Transport in an Urban Residential Catchment: Implications for Protecting Water Quality in Urban Watersheds. Scientific Reports. 8: 11681. DOI: 10.1038/s41598-018-29857-x.

Yang, Y-Y., Lusk, M.G. 2018. Nutrients in Urban Stormwater Runoff: Current State of the Science and Potential Mitigation Options. Current Pollution Reports. 4: 112-127. DOI: 10.1007/s40726-018-0087-7.

Toor, G.S., Occhipinti, M.L., Yang, Y-Y., Majcherek, T., Haver, D., Oki, L. 2017. Managing Urban Runoff in Residential Neighborhoods: Nitrogen and Phosphorus in Lawn Irrigation Driven Residential Runoff. PLoS ONE. 12, e0179151. DOI: 10.1371/journal.pone.0179151.

Yang, Y-Y., Toor, G.S. 2017. Sources and Mechanisms of Nitrate and Orthophosphate Transport in Urban Stormwater Runoff from Residential Catchments. Water Research. 112: 176-184. DOI: 10.1016/j.watres.2017.01.039.

Yang, Y-Y., Toor. G.S. 2016. δ15N and δ18O Reveal the Sources of Nitrate-Nitrogen in Urban Residential Stormwater Runoff. Environmental Science & Technology. 50: 2881-2889. DOI: 10.1021/acs.est.5b05353.

Emerging Contaminants:

Yang, Y-Y., Toor, G.S., Wilson, P.C., Williams, C.F. 2017. Micropollutants in Groundwater from Septic Systems: Transformations, Transport Mechanisms, and Human Health Risk Assessment. Water Research. 123, 258-267. DOI: 10.1016/j.watres.2017.06.054.

Lusk, M.G., Toor, G.S., Yang, Y-Y., Mechtensimer, S., De, M., Obreza, T.A. 2017. A Review of the Fate and Transport of Nitrogen, Phosphorus, Pathogens, and Trace Organic Chemicals in Onsite Wastewater Treatment Systems. Critical Review in Environmental Science and Technology. 47, 455-541. DOI: 10.1080/10643389.2017.1327787.

Gray, J.L., Borch, T.S., Furlong, E.T., Davis, J.G., Yager, T.J., Yang, Y-Y., Kolpin, D.W. 2017. Rainfall Runoff of Anthropogenic Waste Indicators from Agricultural Fields Applied with Municipal Biosolids. Science of the Total Environment. 580, 83-89. DOI: 10.1016/j.scitotenv.2016.03.033.

Yang, Y-Y., Toor, G.S., Wilson, P.C., Williams, C.F. 2016. Septic Systems as Hot-Spots of Pollutants in the Environment: Fate and Mass Balance of Micropollutants in Septic Drainfields. Science of the Total Environment. 566-567: 1535-1544. DOI: 10.1016/j.scitotenv.2016.06.043.

Yang, Y-Y., Toor, G.S., Williams, C.F. 2015. Pharmaceuticals and Organochloride Pesticides in Sediments of an Urban River in Florida, United States. Journal of Soils and Sediments. 15: 993-1004. DOI: 1007/s11368-015-1077-7.

Yang, Y-Y., Gray, J.L., Furlong, E.T., Davis, J.G., ReVello, R.C., Borch, T. 2012. Steroid Hormone Runoff from an Agricultural Field Applied with Municipal Biosolids. Environmental Science & Technology. 46: 2746-2754. DOI: 10.1021/es203896t.

Yang, Y-Y., Pereyre, L.P., Young, R.B., Reardon, K.F., Borch, T. 2011. Testosterone-Mineralizing Culture Enriched from Swine Manure: Characterization of Degradation Pathways and Microbial Community Composition. Environmental Science & Technology. 45: 6879-6886. DOI: 10.1021/es2013648.

Yang, Y-Y., Borch, T., Young, R.B., Goodridge, L.D., Davis, J.G. 2010. Degradation Kinetics of Testosterone by Manure-Borne Bacteria: Influence of Temperature, pH, Glucose Amendments, and Dissolved Oxygen. Journal of Environmental Quality. 39: 1153-1160. DOI: 10.2134/jeq2009.0112.