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| 保护性耕作对土壤有机碳稳定化影响的研究进展 |
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祁剑英1,马守田1,刘冰洋1,阚正荣1,刘鹏1,王兴1,刘洋2*,张海林1*
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| (1.中国农业大学 农学院/农业农村部农作制度重点实验室, 北京 100193;2. 辽宁省农业科学院 耕作栽培研究所, 沈阳 110161) |
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| 摘要: |
| 为进一步明确保护性耕作对土壤有机碳固持(Carbon sequestration)的影响，系统分析2000—2018年农田生态系统中，保护性耕作对土壤有机碳稳定化(Stabilization)影响的相关研究文献。结果表明，保护性耕作并不直接影响土壤有机碳本身的稳定性(Stability)，而是通过改变土壤物理化学性质及有机碳分子结构(Molecular structure)促进土壤有机碳稳定化，增加土壤固碳。未来研究重点应在阐明保护性耕作条件下外源有机碳的投入(主要源于作物秸秆)与土壤有机碳变化的关系，保护性耕作条件下土壤理化性质对土壤有机碳矿化的影响以及保护性耕作对土壤有机碳分子结构及其对有机碳稳定的影响。 |
| 关键词: 保护性耕作 土壤有机碳 稳定化 稳定性 有机碳矿化 |
| DOI：10.11841/j.issn.1007-4333.2020.01.01 |
| 投稿时间：2019-03-09 |
| 基金项目:国家自然科学基金(31871582) |
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| Advances in effects of conservation tillage on soil organic carbon stabilization |
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QI Jianying1,MA Shoutian1,LIU Bingyang1,KAN Zhengrong1,LIU Peng1,WANG Xing1,LIU Yang2*,ZHANG Hailin1*
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| (1.College of Agronomy and Biotechnology/Key Laboratory of Farming System of Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100193, China;2.Institute of Farming and Cultivation, Liaoning Academy of Agricultural Sciences, Shenyang 110161, China) |
| Abstract: |
| To further investigate the effects of conservation tillage(CT)on soil organic carbon(SOC)sequestration, the literatures related to SOC stabilization under CT in the field ecosystem were reviewed. The results indicated that CT could not directly improve the stability of SOC itself. By changing soil physic-chemical properties and SOC molecular structure, CT improved SOC stabilization and sequestration. Future research should focus on: 1)Investigating the relationship between carbon input(sourced from crop straw)and SOC dynamics under CT; 2)Revealing the effects of soil physic-chemical properties on SOC mineralization; 3)Figuring out the effects of conservation tillage on SOC molecule structure and its influence on SOC stabilization. |
| Key words: conservation tillage soil organic carbon stabilization stability carbon mineralization |
