干旱区生态环境知识资源中心(Arid): 施用生物炭对干旱区玉米农田碳足迹的影响

Arid

	施用生物炭对干旱区玉米农田碳足迹的影响
其他题名	Effects of biochar on carbon footprint of corn fields in arid regions
	王冠丽 1; 孙铁军 2; 刘廷玺 1; 程功 3
来源期刊	农业环境科学学报
ISSN	1672-2043
出版年	2019
卷号	38 期号:11 页码:2650-2658
中文摘要	为粮食稳定增产的同时降低农田生态系统的温室气体排放和碳足迹。本研究在科尔沁沙丘-草甸梯级生态系统中的玉米农田设置施入不同含量生物炭的对比试验,其施用生物炭量分别为:0(CK)、15(C15)、30 t·hm~(-2)(C30)和45 t·hm~(-2)(C45),就各处理生命周期内温室气体(CO_2、CH_4及N_2O)通量进行观测,对其农资投入进行统计,并进行碳足迹的计算。结果表明:施用生物炭会有效降低玉米农田生态系统的温室气体累计排放总量,处理C15、C30、C45与对照CK相比,其温室气体累计排放量分别降低21.4%、14.2%、16.8%;碳足迹及单位产量碳足迹则随着生物炭添加含量的增加而明显增大,处理C15、C30、C45与对照CK相比,其碳足迹分别增大73.1%、149.1%、227.8%,其单位产量的碳足迹分别增大59.8%、121.2%、195.9%。相比对照C15,处理C30和C45分别提高了玉米产量的4.2%和2.2%,但增幅均并不显著。因此综合经济效益和环境因素考虑,建议科尔沁地区玉米农田在生产过程中施用15 t·hm~(-2)生物炭,在保证增加产量的同时将农田生态系统的碳足迹控制在较低范围内。
英文摘要	Agricultural research is now more concerned about the problem of reducing the cumulative greenhouse gas emissions and the carbon footprint of farmland production systems while maintaining production. This study is based on comparative experiments, applying different amounts of biochar in corn farmland in the Horqin dune-meadow cascade ecosystem. The biochar amounts were:0 t·hm~(-2)(CK), 15 t·hm~(-2)(C15), 30 t·hm~(-2)(C30), and 45 t·hm~(-2)(C45). Observations on the greenhouse gas(CO_2, CH_4, and N_2O)fluxes within a life cycle of the four treatments, financial costs, and the calculation of the carbon footprint were conducted. The results showed the application of biochar would effectively reduce the total greenhouse gas emissions of corn production. Compared with the CK treatment, the cumulative greenhouse gas emissions of C15, C30, and C45 decreased by 21.4%, 14.2%, and 16.8%, respectively. The carbon footprint and the per unit output increased significantly with the increase in biochar addition. Compared with the CK treatment, the carbon footprint of C15, C30, and C45 increased by 73.1%, 149.1%, and 227.8%, respectively. Moreover, the per unit output of the carbon footprint increased by 59.8%, 121.2%, and 195.9%, respectively. The treatments of C30 and C45 increased corn yield by 4.2% and 2.2%, respectively, in comparison to that of the C15 treatment, which were both not significant. Therefore, considering the comprehensive economic benefits and environmental factors, it is recommended 15 t·hm~(-2) biochar be applied to the corn farmland in the Horqin area during production, which will greatly reduce the carbon footprint during production while maintaining the increased production.
中文关键词	碳足迹 ; 温室气体
英文关键词	CH_4 N_2O CH_4 N_2O carbon footprint greenhouse gas
语种	中文
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:6618472
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/316064
作者单位	1.内蒙古农业大学水利与土木建筑工程学院;;内蒙古自治区水资源保护与利用重点实验室, ;;内蒙古自治区水资源保护与利用重点实验室, 呼和浩特;;呼和浩特, ;; 010018;;010018; 2.内蒙古自治区水利水电勘测设计院, 呼和浩特, 内蒙古 010020, 中国; 3.内蒙古农业大学水利与土木建筑工程学院, 呼和浩特, 内蒙古 010018, 中国
推荐引用方式 GB/T 7714	王冠丽,孙铁军,刘廷玺,等. 施用生物炭对干旱区玉米农田碳足迹的影响[J],2019,38(11):2650-2658.
APA	王冠丽,孙铁军,刘廷玺,&程功.(2019).施用生物炭对干旱区玉米农田碳足迹的影响.农业环境科学学报,38(11),2650-2658.
MLA	王冠丽,et al."施用生物炭对干旱区玉米农田碳足迹的影响".农业环境科学学报 38.11(2019):2650-2658.