2022 ESA Annual Meeting (August 14

10:00 AM-11:30 AM

520A

Mohd. Abdul Halim, PhD, University of Toronto;Melanie Sifton, MSc,University of Toronto;Wenxi Liao, BSc,University of Toronto (Forestry and Civil Engineering);IMRUL KAYES,University of Toronto;Jennifer Drake, PhD, PEng.,Civil and Mineral Engineering Department, University of Toronto;Liat Margolis, MLA,Daniels Faculty of Architecture, Landscape, and Design;Sean C. Thomas, PhD,University of Toronto;

Green roofs are becoming increasingly popular for several ecosystem services in urban settings, but their ability to consume atmospheric methane is relatively low and poorly explored. In this study, for the first time, we explored the methane consumption potential of biochar (18t/ha) amended green roof substrates. Results from two-year measurements show that mean (SE) methane consumption in biochar beds (-0.33±0.03 nmol.m-2.s-1) was ~200% higher than that in control beds (-0.17±0.05 nmol.m-2.s-1) (p< 0.01). The magnitude of methane consumption in biochar beds is highly comparable to urban forest soils (e.g., 0.174 nmol.m-2.s-1) and higher than urban lawns in this geographic region.

INS 10-6 Biochar boosts methane consumption by green roof substrates