中国农业科学 ›› 2023, Vol. 56 ›› Issue (20): 4049-4066.doi: 10.3864/j.issn.0578-1752.2023.20.010

• 土壤肥料·节水灌溉·农业生态环境 • 上一篇    下一篇

我国农业碳排放的时空演化、脱钩效应及绩效评估

孟庆雷(), 殷宇翔(), 王煜昊()   

  1. 中南民族大学经济学院,武汉 430074
  • 收稿日期:2023-05-11 接受日期:2023-06-30 出版日期:2023-10-16 发布日期:2023-10-31
  • 通信作者:
    殷宇翔,E-mail:
    王煜昊,E-mail:
  • 联系方式: 孟庆雷,E-mail:277927606@qq.com。
  • 基金资助:
    国家社会科学基金一般项目(20BMZ114)

Spatial-Temporal Evolution, Decoupling Effect and Performance Evaluation of China’s Agricultural Carbon Emissions

MENG QingLei(), YIN YuXiang(), WANG YuHao()   

  1. School of Economics, South-Central Minzu University, Wuhan 430074
  • Received:2023-05-11 Accepted:2023-06-30 Published:2023-10-16 Online:2023-10-31

摘要:

【目的】科学分析我国农业碳排放的时序特征、空间格局、演变模式、脱钩关系和绩效评估等问题,为助力我国实现“双碳”目标、加强建设农业强国提供依据。【方法】构建我国农业碳排放和农业碳排放绩效评估的指标体系,基于2007—2020年我国省域农业碳排放的系统测度指数,采用核密度估计和标准化椭圆可视化分析农业碳排放的区域分布特征和时空演化趋势,选用Tapio模型考察农业碳排放与经济增长之间的脱钩关系,构建非期望产出的超效率SBM模型报告我国和七大经济区的农业碳排放绩效及分解效率。【结果】2007—2020年,我国农业碳排放整体呈现先上升后下降的“倒U型”曲线,区位差异明显,等级分布稳定。东部地区减排效果最优,中部地区出现“两极化”分布,西部地区减排压力较大。空间格局整体以东北-西南方向为主导,并向东北和西北方向趋向分散化。我国农业碳排放和农业经济发展之间已保持在弱脱钩水平并向强脱钩水平突破,可划分为平稳期(2007—2016年)和突破期(2017—2020年)两个阶段。农业碳排放绩效呈现出“迅速上升-缓慢下降-平稳改善”趋势,其中大西北经济区和北部沿海经济区分别居于首位和末位,农业生产技术变化(TC)相较于技术效率变化(EC)贡献更为突出。【结论】以2017年为拐点,我国农业碳排放整体呈现下降趋势,农业经济发展整体上逐渐摆脱对农业碳排放的依赖。各区块与各省份农业基础各异、减排目标不同,需因地制宜合理规划农业比较优势产业的规模和内部结构,合理选择区域内产业的资源禀赋生产特征,同时重视技术迭代与更新在农业经济发展与节能减排之中的推动作用,兼顾地区生态效益与经济效益。

关键词: 农业碳排放, 时空演化, 脱钩效应, 绩效评估

Abstract:

【Objective】The temporal characteristics, spatial pattern, evolution mode, decoupling relationship and performance evaluation of China’s agricultural carbon emissions were analyzed scientifically, so as to provide a basis for helping China achieve the goal of “carbon peaking and carbon neutrality” and strengthen the construction of an agricultural power. 【Method】This study constructed an index system for assessing agricultural carbon emissions and agricultural carbon emission performance in China, and measured the systematic measurement index of agricultural carbon emissions in Chinese provinces from 2007 to 2020. The Kernel density estimation and standardized ellipsoidal visualization analysis were used to analyze the regional distribution characteristics and spatial-temporal evolution trends of agricultural carbon emissions, Tapio model was used to examine the decoupling relationship between examining agricultural carbon emissions and economic growth, and the super-efficient SBM model with non-expected output was constructed to report the agricultural carbon emission performance and decomposition efficiency of China and the seven economic regions. 【Result】 From 2007 to 2020, the overall agricultural carbon emissions in China showed an “inverted U-shaped” curve of rising and then declining, with obvious regional differences and stable distribution of ranks. The eastern region had the best emission reduction effect, the central region had a “bipolar” distribution, and the western region had a higher pressure of emission reduction, with the overall spatial pattern dominated by the northeast-southwest direction, and tended to be decentralized to the northeast and northwest. China’s agricultural carbon emissions and agricultural economic development have been maintained at a weakly decoupled level and have made a breakthrough to a strongly decoupled level, which could be divided into two stages: a stable period (2007-2016) and a breakthrough period (2017-2020). The assessment of agricultural carbon emission performance showed a trend of “rapid rise - slow decline - steady improvement”, with the Great Northwest Economic Zone and the Northern Coastal Economic Zone in the first and last positions, respectively, and the contribution of technological change in agricultural production (TC) was more prominent than that of technical efficiency change (EC). 【Conclusion】With 2017 as the inflection point, China’s agricultural carbon emissions as a whole showed a decreasing trend, and the agricultural economic development as a whole was gradually getting rid of the dependence on agricultural carbon emissions, with different agricultural bases and different emission reduction targets in each region and province. It was necessary to reasonably plan the scale and internal structure of agricultural comparative advantage industries according to local conditions, reasonably select the resource endowment production characteristics of industries in the region. At the same time, we should pay attention to technology iteration and updating in the agricultural economic development and energy conservation and emission reduction in the role of promoting, taking into account the regional ecological benefits and economic benefits.

Key words: carbon emissions from agriculture, space-time evolution, decoupling effect, performance evaluation