Meta分析生物质炭对中国主粮作物痕量温室气体排放的影响

发布时间：2018-03-05 18:37

本文选题：温室气体　切入点：甲烷　出处：《农业工程学报》2017年19期 　论文类型：期刊论文

【摘要】：该文采用Meta分析方法定量分析生物质炭输入对中国主粮作物痕量温室气体的影响,研究可为农田痕量温室气体减排提供有效的途径。结果表明相对于不施加生物质炭,生物质炭输入对甲烷吸收/排放并无显著影响,而甲烷排放在不同耕作和施氮情况下发生显著变化。旋耕和不施氮情况下施加生物质炭分别显著提高稻田甲烷排放达30%和46%,而在翻耕和施氮的情况下施加生物质炭可减少稻田甲烷排放达9%和10%。生物质炭输入分别可显著减少主粮作物氧化亚氮、全球增温潜势(global warming potential,GWP)及温室气体排放强度(greenhouse gas intensity,GHGI)达41%、18%及25%。不同土地利用类型、耕作类型、生物质炭施用量及生物质炭类型均可显著影响农田氧化亚氮、GWP和GWPI。合理的管理主粮作物生物质输入可为减少温室气体排放做出贡献,建议生物质炭与施氮和翻耕2种农作措施相结合,施加小于10 t/hm~2及碳氮比(C/N)低于80的生物质炭,以利于主粮作物综合温室效应的减排。
[Abstract]:In this paper, the effects of biomass carbon input on trace greenhouse gases in main grain crops in China were quantitatively analyzed by using Meta analysis method. The results showed that the method could provide an effective way to reduce the trace greenhouse gas emissions in farmland, and the results showed that compared with no application of biomass carbon, Biomass carbon input has no significant effect on methane absorption / emission. However, methane emission changed significantly under different tillage and nitrogen application. Biomass carbon significantly increased methane emission by 30% and 46 under rotary tillage and no nitrogen application, respectively, while biomass was applied under tillage and nitrogen application. Carbon can reduce methane emission from paddy field by 9% and 10. Biomass carbon input can significantly reduce nitrogen oxide of main grain crops respectively. Global warming potential (GWPs) and greenhouse gas intensity (GHGI) reach 41% and 25% respectively. Different types of land use and cultivation, Biomass carbon application amount and biomass carbon type can significantly affect GWP and GWPI.The reasonable management of biomass input from main grain crops can contribute to the reduction of greenhouse gas emissions. It was suggested that biomass carbon should be combined with nitrogen application and tillage to apply biomass carbon with C / N ratio less than 10 t / h ~ (-2) and C / N ratio < 80 in order to reduce the emission of Greenhouse Effect.
【作者单位】：济南市环境研究院环境规划研究所;江西省农业科学院农业工程研究所;中国科学院生态环境研究中心城市与区域生态国家重点实验室;
【基金】：国家自然科学基金-青年基金项目(71003092) 中国科学院青年创新促进会项目
【分类号】：S181

【相似文献】