稻田秸秆还田的土壤增碳及温室气体排放效应和机理研究进展

被引:25
作者
史然 [1 ]
陈晓娟 [1 ]
沈建林 [1 ]
葛体达 [1 ]
隋方功 [2 ]
童成立 [1 ]
吴金水 [1 ]
机构
[1] 中国科学院亚热带农业生态研究所,亚热带农业生态过程重点实验室
[2] 青岛农业大学资环学院
基金
湖南省自然科学基金;
关键词
土壤增碳; 温室气体排放; 秸秆还田; 稻田土壤;
D O I
10.13758/j.cnki.tr.2013.02.007
中图分类号
S141.4 [堆肥、沤肥];
学科分类号
摘要
秸秆还田是水稻生产中普遍采用的一项措施,具有固碳和促进养分元素循环、减少生产中的化肥施用等生态环境功能,但亦存在温室气体排放问题。鉴于秸秆还田对稻田产生固碳和温室气体增排的双重效果,本文综述了稻田生态系统秸秆资源利用现状,探讨了秸秆还田的土壤增碳效应,总结了秸秆还田下的温室气体(CO2、N2O和CH4)排放过程及其微生物过程机理。提出了应加强秸秆还田增碳过程中的物理–化学过程与微生物过程的耦合机理及其对固碳功能的作用机理、稻田温室气体产生机制与控制途径的研究,以实现稻田土壤固碳减排增汇和增产的共轭双赢作用。
引用
收藏
页码:1193 / 1198
页数:6
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