Fig. 3From: Impacts of biochar amendment and straw incorporation on soil heterotrophic respiration and desorption of soil organic carbonSeasonal variation of CO2 efflux under no amendment (CK), 1% biochar (B1), 2% biochar (B2), 1% wheat straw (S1) and 2% wheat straw (S2) application. Dashed line denotes 7-day mean temperature prior to the day of CO2 measured (no date in February and March due to the Covid-19 epidemic)Back to article page