| 知識類型 | 期刊 |
| 標題 | The effect of young biochar on soil respiration |
| 作者 | Jeffrey L.Smith, Harold P.Collins, Vanessa L.Bailey |
| 名稱(期刊/節目) | Soil Biology and Biochemistry |
| 期刊期數/節目集數 | Volume 42, Issue 12, Pages 2345-2347 |
| 出版單位 | ELSEVIER |
| 出版年月日 | December 2010 |
| 原文摘要 | The low temperature pyrolysis of organic material produces biochar, a charcoal like substance. Biochar is being promoted as a soil amendment to enhance soil quality, it is also seen as a mechanism of long-term sequestration of carbon. Our experiments tested the hypothesis that biochar is inert in soil. However, we measured an increase in CO2 production from soils after biochar amendment which increased with increasing rates of biochar. The ∂13C signature of the CO2 evolved in the first several days of the incubation was the same as the ∂13C signature of the biochar, confirming that biochar contributed to the CO2 flux. This effect diminished by day 6 of the incubation suggesting that most of the biochar C is slowly decomposing. Thus, aside from this short-term mineralization increasing soil C with young biochar may indeed be a long-term C storage mechanism. |
| 原文摘要簡述 | 有機材料的低溫熱解產生生物炭，一種木炭般的物質。生物炭被晉升作為一種土壤改良方法以提高土壤品質，以及一種長期碳固存的機制。我們的實驗驗證了生物炭在土壤中是惰性的假設。然而，我們測量了生物炭改良後土壤中二氧化碳的增加，該增加與生物炭比率成正比。在培養的前幾天中，二氧化碳的碳-13標記與生物炭的碳-13標記相同，這證實了生物炭有助於二氧化碳通量。在培養的第6天，這種作用減弱了，表明了大多數生物炭的碳正緩慢地分解。因此，除了這種短期礦化作用外，以年輕的生物炭增加土壤碳確實可能為長期的碳儲存機制。 |
| 關鍵字 | Biochar; Carbon sequestration; Soil respiration; ∂13C |
| 連結 | https://doi.org/10.1016/j.soilbio.2010.09.013 |