山地丘陵农产品主产区主要作物碳足迹及碳排放研究——以四川省洪雅、开江、盐亭和兴文4县为例  

Carbon Print and Carbon Emission of Main Agricultural Products in Mountainous and Hilly Main Production Areas of Agricultural Products——Taking Hongya,Kaijiang,Yanting and Xingwen Counties in Sichuan Province as Examples

作　　者：罗怀良[1] LUO Huailiang(College of Geography and Resources Science,Sichuan Normal University,Chengdu,Sichuan 610101,China)

机构地区：[1]四川师范大学地理与资源科学学院,四川成都610101

出　　处：《作物研究》2023年第6期634-641,共8页Crop Research

基　　金：国家社科基金项目(17BGL137)。

摘　　要：细化作物产品碳足迹有助于深化农业组分碳收支研究,增强农业碳减排措施的针对性。以四川盆地山地丘陵农产品主产区的洪雅、盐亭、兴文和开江4县为研究对象,采用农户问卷调查、参数估算、政府间气候变化专门委员会(IPCC)清单估算和标准粮产量等方法,构建基于标准粮产量的作物碳足迹估算方法,估算该区5种主要作物碳足迹并进行碳排放及构成分析。结果表明:该区基于标准粮产量的作物碳足迹均值为0.751 kg/kg,具有碳汇效应;各县域作物碳足迹均值表现为:兴文(0.771 kg/kg)>洪雅(0.753 kg/kg)>盐亭(0.746 kg/kg)>开江(0.720 kg/kg);作物碳足迹表现为:油菜(1.046 kg/kg)>玉米(0.846 kg/kg)>水稻(0.744 kg/kg)>甘薯(0.632 kg/kg)>花生(0.487 kg/kg)。该区水稻碳排放以稻田甲烷为主(66.39%),农资投入(17.64%)和土壤N_(2)O排放(15.69%)次之,种子投入占比最小(0.27%);其余4种作物则以农资投入为主(49.90%,其中化肥占93.91%),土壤N_(2)O排放次之(29.66%),种子投入占比最小(19.26%)。该区各县应根据其县域作物生产碳足迹与碳排放构成的实际情况采取相应碳减排措施,才能取得明显效果。Refining carbon footprint of crop products will help deepen research on carbon budget of agricultural components and enhance pertinence of agricultural carbon emission reduction measures.Taking Hongya,Yanting,Xingwen and Kaijiang counties,the main agricultural products producing areas in mountainous and hilly areas of Sichuan Basin,as research objects,carbon footprint estimation method of crop products based on standard grain yield was constructed by using the me-thods of farmers'questionnaire survey,parameter estimation,IPCC inventory estimation and standard grain yield,to estimate carbon footprint and analyze their carbon emissions and composition of 4 main crop products in the area.The results showed that average carbon footprint of crop products based on standard grain yield in the region was 0.751 kg/kg,and the differences between counties and crops were obvious:Xingwen(0.771 kg/kg)>Hongya(0.753 kg/kg)>Yanting(0.746 kg/kg)>Kaijiang(0.720 kg/kg);rape(1.046 kg/kg)>maize(0.846 kg/kg)>rice(0.744 kg/kg)>sweetpotato(0.632 kg/kg)>peanut(0.487 kg/kg).Carbon emission of rice products in this area is mainly methane from rice fields(66.39%),agricultural inputs(17.64%)and soil N_(2)O emissions(15.69%)came second,with seed inputs accounting for the smallest proportion(0.27%);That of other 4 crops are mainly agricultural inputs(49.90%,of which chemical fertilizer accounts for 93.91%),followed by soil N_(2)O emissions(29.66%),and seed inputs(19.26%).Each county in the region should take corresponding carbon emission reduction measures according to the actual situation of carbon footprint and carbon emission composition of crop production in the county to achieve obvious results.

关 键 词：农产品 碳足迹 碳排放 山地丘陵地区 四川 

分 类 号：F205[经济管理—国民经济] F323.22[环境科学与工程—环境工程] X322