双碳目标下中国农业系统N_(2)O排放及主粮低碳化生产研究  

N_(2)O emissions and low⁃carbon production of staple grains in China's agricultural system under the dual carbon target

作　　者：王国峰 刘朴 邓祥征[2,3] 刘玉洁 孙志刚[2,3] WANG Guofeng;LIU Pu;DENG Xiangzheng;LIU Yujie;SUN Zhigang(Faculty of International Trade,Shanxi University of Finance and Economics,Taiyuan 030006;Institute of Geographic Science and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101;University of Chinese Academy of Sciences,Beijing 100049)

机构地区：[1]山西财经大学国际贸易学院,太原030006 [2]中国科学院地理科学与资源研究所,北京100101 [3]中国科学院大学,北京100049

出　　处：《南京信息工程大学学报（自然科学版）》2022年第4期484-492,共9页Journal of Nanjing University of Information Science & Technology（Natural Science Edition）

基　　金：中国科学院战略性先导科技专项(A类)(XDA23070400);国家自然科学基金(72003111)。

摘　　要：农业作为N_(2)O重要的排放源,厘清农业系统N_(2)O排放对“双碳”目标实现具有重要意义.本文基于2000—2019年中国种植业、养殖业数据,估算了农业系统N_(2)O排放量,并利用泰尔指数(Theil index)探求了中国大陆4大板块和8大经济区之间的差异性,对主粮低碳化生产提出对策建议.研究结果显示:1)中国农业系统N_(2)O排放呈现先增加后减少趋势,其中2000—2015年是上升阶段,从69.98万t增加到86.01万t,2016—2019年为下降阶段,2019年农业系统N_(2)O排放量为76.43万t.2)分省农业系统N_(2)O排放量差异显著,2019年农业系统N_(2)O排放量最少的是北京(0.056万t),最多的是河南(5.69万t);集中趋势更为凸显,广西、河南、江苏等排放量较多.3)省域之间、区域之间农业系统N_(2)O排放量差异呈现多样性变化,如省域差异前期先扩大后缩小,2009年以来表现平稳,8大区域中北部沿海、东部沿海、大西北区域泰尔指数呈现下降趋势,其他区域皆呈上升趋势.为实现N_(2)O减排,需要针对不同板块和经济区针对性开展主粮低碳化生产,需要重点针对中部板块、西部板块以及东北区域和大西南区域针对性开展低碳化生产.The proposal of carbon peak and carbon neutrality goals will have a transformative impact on the socioeconomic development of China.It is of great significance to clarify the agricultural N_(2)O emissions for the realization of the dual carbon goal.Here,we calculate the N_(2)O emissions from agricultural system using China's crop planting and manure management data from 2000 to 2019,use the Theil index to explore the difference in N_(2)O emission among four major regions and eight economic zones,and propose suggestions for China's low⁃carbon production of staple grains.The results showed an increasing then decreasing trend in N_(2)O emissions from China's agricultural sys⁃tem during 2000-2019.The N_(2)O emissions increased during 2000-2015 from 699,800 tons in 2000 to 860,100 tons in 2015,and then declined to 764,300 tons in 2019.The N_(2)O emission significantly varied between provinces,which was 560 tons in Beijing in 2019 and 56900 tons in Henan in 2019.Along with the concentrated trend,diverse variations in N_(2)O emission were observed between provinces and regions.The provincial differences first expanded and then narrowed,and have stabilized since 2009.For the eight economic zones,the Theil index showed a downward trend in the northern coast,eastern coast,northwest zone,and an upward trend in other zones.To reduce N_(2)O emission,it is necessary to carry out low⁃carbon production of major grains targeted for different regions and e⁃conomic zones,especially for the central region,western region,northeast zone and southwest zone.

关 键 词：双碳目标 农业系统 N_(2)O排放 泰尔指数 低碳化 

分 类 号：F322[经济管理—产业经济]