Reconstruction And Decomposition Of Agricultural Green Total Factor Productivity Based On MRIO Model

Clarifying the source of agricultural green growth is the premise and basis for exploring its low-carbon and high-quality development path.Based on the expansion of the existing growth accounting theory,this paper constructs a model chain of "multi-regional input-output model+data envelopment analysis+productivity index decomposition",uses the multi-regional input-output model(MRIO)to estimate the energy and environmental factor footprint of the agricultural sector and incorporate it into the total factor productivity(TFP)accounting framework to effectively identify the overall impact of technological innovation and efficiency improvement on total factor productivity through input/output variables.Then,we explore effective ways to improve total factor productivity.Different from the research that only focuses on resource utilization,greenhouse gas and pollution emissions,this paper first focuses on the "hidden" footprint calculation of resources and environmental factors as a reasonable alternative to the "direct" amount of resource utilization and environmental emissions.Then,we use the data of 43 major economies in the world to construct the frontier of agricultural production,improve the bounded adjustment linear programming technology and the Luenberger index decomposition model,which help us observe the overall growth level of agricultural total factor productivity,and realize the three-dimensional decomposition and comprehensive identification of the contribution of input/output variables to TFP changes according to different sources of technological innovation and efficiency improvement.On this basis,this article finally proposes path optimization measures for green,low-carbon,and high-quality agricultural development.This paper uses the environmental accounting data provided in Eora26 for empirical analysis.The empirical results show that:(1)energy use,carbon emissions and pollutant emission footprints are the main sources of low agricultural production efficiency,which can verify the value theory and externality theory of resources and environment,and fully reflect the scientific nature of incorporating the footprint of resources and environment elements into the accounting framework;(2)During the whole sample period,the average growth of agricultural productivity in 43 major economies in the world was 0.616%,and the efficiency improvement played a major role in promoting(0.380%),but the contribution of technological innovation cannot be ignored(0.236%);(3)The total factor productivity of advanced economies increased rapidly,while the total factor productivity of backward economies increased slowly(even regressed);(4)The growth of total factor productivity of agriculture in the sample economies remained continuous on the whole;(5)During our sample period,technological innovation of agricultural energy use(footprint)and improvement of agricultural land use efficiency are the most effective ways to promote the growth of agricultural total factor productivity.In the future,leading economies should promote the efficiency of the agricultural sector,while backward economies should accelerate their technological innovation.Therefore,in the sample period from 2000 to 2014,the most effective way to improve agricultural total factor productivity is to promote the innovation of agricultural energy use(footprint)technology and the improvement of agricultural land use efficiency.In the future,the efficiency improvement of agricultural sector productivity and technological innovation should become the "new normal" for leading and lagging economies to learn from each other;For China,the lack of technological innovation capacity related to energy use footprint,CO2 emission footprint and land use is the main factor that leads to the relatively backward total factor productivity.Therefore,China’s agricultural sector should focus on improving the innovative capacity of environment-friendly technologies in the agricultural sector in the later stage,and give full play to the role of green technology as an engine for the transformation and development of low-carbon economy.