Li Hongbo et al.: Agricultural Machinery Country III to Country IV: Environmental Benefits and Economic Costs

Li Hongbo, Zhang Qi, Zhang Zongyi, Wang Yun

china Academy of Agricultural Equipment Industry Development, Jiangsu University

abstract

in recent years, China has paid more and more attention to the emission control of pollutants from non-road mobile machinery. The environmental value and economic cost of emission reduction of large, medium and small agricultural tractors are studied under the background of non-road mobile machinery emission policy national III standard and national IV standard. At the national provincial level, the cost-benefit analysis method is adopted to quantitatively evaluate this policy, and further carry out the simulation analysis and sensitivity analysis of emission reduction scenarios. The study found that within the research time range (December 1, 2022-November 1, 2023), the country created a total of about 5.48 million yuan in emission reduction environmental benefits, of which Henan Province created the highest benefit of 760000 yuan. The average economic cost to achieve the environmental benefits of this volume is about 1191 yuan, which is about 23 times the average environmental benefits of Taiwan. By 2030, the emission reductions of CO, HC, NOX and PM particles will increase by 54.32, 42.25, 40.25 and 46.44 per cent. Before the country updates the fifth round of non-road mobile machinery pollutant emission standards, improving the utilization rate of tractors under the National IV standard is the most effective way to take into account emission reduction, economic costs and environmental benefits, and technological upgrading and cost reduction is the most favorable way to optimize the policy revenue-cost ratio.

Keywords

agricultural tractor; environmental regulation; cost-efficiency analysis; environmental benefit; economic cost; situation simulation

china Journal of Agricultural Mechanization, Volume 46, Issue 6, 2025, pp. 259-270.