生物炭
矿化(土壤科学)
土壤呼吸
孵化
化学
土壤碳
常绿
农学
呼吸
环境化学
环境科学
土壤水分
动物科学
土壤科学
植物
生物
热解
生物化学
有机化学
作者
Lina Gogoi,Rumi Narzari,Nirmali Gogoi,Bikram Borkotoki,Rupam Kataki
标识
DOI:10.1007/s40891-020-00214-1
摘要
Mineralization of soil organic carbon has a significant impact on the atmospheric CO2 concentration. Application of organic amendments can affect the dynamics of carbon present in soil through the process of mineralization and immobilization. This study assessed the efficiency of biochar on soil carbon mineralization through respiration and the priming effect (positive or negative) after addition of the external carbon biomass in a controlled incubation experiment (90 days) at two different temperature regimes viz. 15 °C and 30 °C. A decrease in total CO2 respired was found with the addition of biochar in the soil where 6 t ha−1 of biochar treatment (T7) produced the lowest amount of CO2 for both the temperature regimes. The calculated half-life (t1/2) and rate constant (k) showed resistivity towards mineralization with increasing doses of biochar. Significantly negative priming effects were observed with addition of biochar in comparison to the control treatment at the end of the incubation period.
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