首页> 中文期刊> 《生态与农村环境学报》 >不同生物质炭对稻田土壤CH4排放的影响研究进展

不同生物质炭对稻田土壤CH4排放的影响研究进展

         

摘要

Paddy field is one of the important sources of CH4 emission. Hence reduction of CH4 emissions from paddy soil is of great significance to retarding global climate changes. Being quite high in stability, absorptivity and alkalinity, biochar has drawn extensive attention in the study on how to mitigate CH4 emissions from paddy field. In recent, a good few researches have been carried out on effects of biochar amendment on CH4 emissions from paddy field, nevertheless, little has been done on effects of type of the biochar amended on CH4 emissions. In order to explore effects of type of the biochar amended on CH4 emissions from paddy fields and their mechanisms, recent progresses in the study on impacts of biochars different in parent material, pyrolysis temperature and pore structure on CH4 emissions from paddy soils have been re⁃viewed. Results show that biochars vary sharply in property. The amendment of biochar affects CH4 emission from paddy soil through its effects on soil aeration, soluble organic carbon content, pH and rice plants, and then in turn on activities and abundances of methanogens and methanotrophs. Besides, the effects of biochar amendment were also related to type of soil. In the light of the status quo of the studies at home and abroad on the effects of biochars mitigating CH4 emissions from paddy soils, directions for future studies in this aspect are proposed with a view to providing some ways of thinking and references for application of biochar to mitigate CH4 emissions in paddy fields.%稻田是CH4的重要排放源,降低水稻土CH4排放对减缓全球气候变化具有重要意义。生物质炭因其具有较强的稳定性、吸附性和碱性等特性,在稻田CH4减排研究中受到广泛关注。综述了不同生物质和不同热解温度制成及不同孔隙结构的生物质炭对稻田土壤CH4排放的影响及其机制等方面的国内外研究进展。结果发现,不同生物质炭的性质有很大差异。不同生物质炭的添加,通过对稻田土壤的通气性、可溶性有机碳含量、pH及水稻植株的不同作用来影响产甲烷菌和甲烷氧化菌的活性和丰度,进而影响CH4排放。此外,生物质炭对CH4排放的影响还与土壤类型有关。结合目前国内外生物质炭对CH4排放影响的研究现状,提出了未来生物质炭在稻田CH4排放领域的研究方向,旨在为生物质炭在稻田CH4减排中的应用提供思路和参考。

著录项

  • 来源
    《生态与农村环境学报》 |2016年第4期|525-530|共6页
  • 作者单位

    宿州学院环境与测绘工程学院;

    安徽 宿州 234100;

    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;

    湖南 长沙 410125;

    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;

    湖南 长沙 410125;

    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;

    湖南 长沙 410125;

    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;

    湖南 长沙 410125;

    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;

    湖南 长沙 410125;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 生态系统与生态环境;
  • 关键词

    生物质炭; 水稻土; CH4排放; 生物质; 热解温度;

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