生物炭提高水田表土和底土的土壤有机固碳潜力

IF 3.7 Q2 ENVIRONMENTAL SCIENCES

Current Research in Environmental Sustainability Pub Date : 2024-01-01 DOI:10.1016/j.crsust.2024.100267

Kaiyue Song , Shuo Jiang , Zhiwei Liu , Ying Cai , Wei Liu , Rongjun Bian , Xuhui Zhang , Jufeng Zheng , Lianqing Li

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引用次数: 0

摘要

我们对使用生物炭改良了 4 年的水稻土壤的固碳潜力和内在机制进行了研究。通过在 0-15 厘米、15-30 厘米和 30-50 厘米深的土壤中加入玉米秸秆并在实验室中培养 60 天，我们发现生物炭分别减少了 13.5%、27.8% 和 16.5%的土壤有机碳矿化。生物炭还降低了所有深度由新鲜基质引起的累积净碳矿化度和代谢商值。此外，生物炭和秸秆还提高了表土水解酶的活性，增强了真菌和革兰氏阳性菌在底土中的竞争力。

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Biochar improves soil organic carbon sequestration potential in the topsoil and subsoil of a paddy field

We investigated the carbon sequestration potential and underlying mechanisms of a paddy soil amended with biochar for 4 years. By adding maize straw and incubating the soil for 60 days in the laboratory at depths of 0–15 cm, 15–30 cm, and 30–50 cm, we found that biochar reduced soil organic carbon mineralization by 13.5 %, 27.8 % and 16.5 %, respectively. It also decreased cumulative net carbon mineralization and metabolic quotient values induced by fresh substrates at all depths. In addition, biochar and straw increased topsoil hydrolase activity and enhanced the competitiveness of fungi and gram-positive bacteria in the subsoil.

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来源期刊

Current Research in Environmental Sustainability Environmental Science-General Environmental Science

CiteScore

7.50

自引率

9.10%

发文量

审稿时长

95 days