Si Gao

Photo of Gao, Si

Si Gao

PhD candidate, Forest & Conservation Science



  • Master of Science, Environmental & Forest Sciences, University of Washington, Seattle, 2014 - 2016
  • Bachelor of Science, Environmental Science, China Agricultural University, Beijing, 2010 - 2014

Research Interests

  • Soil nitrogen and phosphorus cycling following biochar applications in agricultural ecosystems
  • Functions of pyrogenic carbon in terrestrial ecosystems
  • Influence of agricultural and forest management practices on ecosystem function


Field of Study

Soil biogeochemistry, Soil microbial ecology, Terrestrial ecosystem ecology

Selected Publications

Gao, S. & T.H. DeLuca. 2019.  Use of microdialysis to assess short-term soil soluble N dynamics with biochar additions.  Soil Biology and Biochemistry 136: 107512.  doi: 10.1016/j.soilbio.2019.06.008

Gao, S., T.H. DeLuca & C.C. Cleveland. 2019.  Biochar additions alter phosphorus and nitrogen availability in agricultural ecosystems: A meta-analysis.  Science of the Total Environment 654: 463-472.  doi: 10.1016/j.scitotenv.2018.11.124

Gao, S. & T.H. DeLuca. 2018.  Wood biochar impacts soil phosphorus dynamics and microbial communities in organically-managed croplands.  Soil Biology and Biochemistry 126: 144-150.  doi: 10.1016/j.soilbio.2018.09.002 

Gao, S., K. Hoffman-Krull & T.H. DeLuca. 2017.  Soil biochemical properties and crop productivity following application of locally produced wood biochar at organic farms on Waldron Island, WA.  Biogeochemistry 136: 31-46.  doi: 10.1007/s10533-017-0379-9

Gao, S., K. Hoffman-Krull, A.L. Bidwell & T.H. DeLuca. 2016.  Locally produced wood biochar increases nutrient retention and availability in agricultural soils of the San Juan Islands, USA.  Agriculture, Ecosystems & Environment 233: 43-54.  doi:10.1016/j.agee.2016.08.028