US Forest Service Research & Development
Contact Information
  • US Forest Service Research & Development
  • 1400 Independence Ave., SW
  • Washington, D.C. 20250-0003
  • 800-832-1355
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Ying Ouyang

Research Hydrologist
100 Stone Blvd., Thompson Hall, Room 309
Mississippi State, MS 39762
Phone: 662-325-8654
Fax: 662-325-3278
Contact Ying Ouyang

Current Research

Investigate impacts of land management (e.g., reforestation) and climate change upon surface and groundwater flow, sediment/contaminant transport, water quantity, and water quality using mathematical models (e.g., BASINS-HSPF, MODFLOW/MT3D, and HYDSTRA); develop approaches for low flow selection associated with minimum flows/levels technique for water resource supply, management, and conservation; design a Dynamic Data Driven Application Systems (DDDAS) in conjunction with field measurements for real-time monitoring of surface water quality (e.g., N and P); characterize surface water quality trends using load duration curve and recurrence interval analysis techniques; simulate short-rotation woody biomass production in the soil-tree-atmosphere continuum using STELLA model; identify temporal/space patterns and key parameters of water quantity/quality in forest watersheds using multivariate statistics (e.g., 3D-Kringing, PCA and Wavelet); assess CO2 flux in short-rotation woody crop lands using STELLA model, and perform in-situ field measurements of surface and ground water quality in selected forest watersheds using the YSI sensors.

Collaborate with faculty members from Universities and scientists from state agencies in nutrient removal from constructed wetlands; fate and transport of contaminants in soils and sediments; greenhouse gas emission from land surface; and short-rotation plant biomass production associated with their adverse environmental impacts.



  • Oregon State University, Ph.D. Soil Science (Soil Physics), 1991
  • Oregon State University, M.S. Soil Science (Soil Physics), 1987
  • South China Agricultural University, B.S. Soil Chenistry , 1982

Professional Experience

  • Research Hydrologist, USDA Forest Service, Center for Bottomland Hardwoods Research
    2010 - Current
    As a Research Hydrologist, my major research responsibilities are to: (1) investigate impacts of forest and agricultural management upon water quality and quantity in the Lower Mississippi Alluvial Valley (LMAV) using computer models (e.g., BASINS-HSPF; MODFLOW/MT3D); (2) develop low flow selection method using minimum flows and levels approach in conjunction with Hydstra model; (3) estimate short-rotation woody biomass production in the soil-tree-atmosphere system using STELLA model; (4) evaluate real-time variations and loads of surface water quality in southeast area using Dynamic Data Driven Application System; (5) detect temporal patterns of watershed hydrology and water quality in response to climate change using Wavelet Analysis; (6) identify most important water quality parameters and environmental variables in forest watershed ecosystems using multivariate statistical analysis (e.g., Principal Component Analysis); (7) assess greenhouse gases (i.e., CO2) flux in forest lands using STELLA model; (8) predict pesticide leaching and loading in agricultural soils; and (9) collaborate with faculty members from Mississippi State University for scientific publications and grant applications as well as serve as graduate student committee members.
  • Environmental Scientist , St. Johns River Water Management District of Florida
    1999 - 2010
    As an Environmental Scientist in water quality and watershed hydrology, my responsibilities were to apply complex computer models, statistical techniques, computational algorithms, and basin-scale field measurements for analyzing surface, wetland, and ground water quality; investigate groundwater discharge, wetland attenuation, and surface load of contaminants, excess nutrients, and sediments into the St. Johns River (SJR) for the purpose of TMDL refinement; ascertain river flow and groundwater drawdown hydrology for water supply impact study; evaluate water use and nutrient application efficiencies in agricultural ecosystems; prepare reports and manuscripts for peer-reviewed publications; develop research projects and manage contracts; and mentor field workers for surface and ground water sampling. During my 12 years' employment at the St. Johns River Water Management District, I had completed the following major projects: (1) modified watershed models (e.g., BASINS-HSPF, GLEAMS, GIS-WAM) for simulating surface water runoff, sediment/contaminant and Hg transport, and total organic carbon load into the SJR; (2) applied the Storm Water Management Model (SWMM) to evaluate surface water runoff, sediment transport, and pollutant loading into the Ortega River and Julington Creek for different land use conditions (e.g., agricultural, forested, urbanization, and industrial lands); (3) performed 3D kriging (geostatistical) analysis on spatial and temporal variations of sediment contaminants using ISATIS model; (4) performed multiple regression on water quality monitoring data for N, P, refractory and labile TOC, and water color in related to basin-scale land uses; (5) applied the principal component analysis to evaluate the SJR basin water quality parameters and monitoring networks; (6) quantified groundwater nutrient discharges into the SJR using field data, Visual MODFLOW/MT3D models, and system dynamic model (STELLA); and (7) applied STELLA model for simulating phytoremediation of contaminants that includes the processes of leaf water evapotranspiration, xylem and phloem chemical transport, and root chemical uptake.

Professional Organizations

  • American Institute Of Hydrology, Professional Hydrologist (2002 - Current)
    Prefessional registration
  • American Geophysical Union, Member (1991 - Current)
    Member of American Geophysical Union
  • Soil Science Society of America, Member (1989 - Current)
    Member of Soil Science Society of America

Awards & Recognition

  • Certificate of appreciation for work as Associate Editor , 2010
    Certificate of appreciation from the American Society of Agronomy/Crop Science Society of America/Soil Science Society of America for work as Associate Editor of the Journal of Environmental Quality for six years (two terms) in 2010.
  • Ten years service award , 2009
    Ten years service award by the St. Johns River Water Management District, Florida, 2009.

Publications & Products

Last updated on : 10/07/2014