Coordinated Development of Carbon Emission Efficiency and Grain Yield Increase in China's Major Grain-Producing Areas
Exploring the coordinated development of carbon emission efficiency of grain production and grain yield increase is conducive to ensuring food security under"China's dual carbon goals".By constructing a measurement system for carbon emis-sion of grain production,this paper adopts the non-expected super-efficiency SBM model to measure the carbon emission effi-ciency of grain production in China's major grain-producing areas from 2001 to 2022,and uses the coupling coordination degree model to analyze the coordinated development of carbon emission efficiency of grain production and grain yield increase.It is found as follows.① During the study period,the total grain yield in China s major grain-producing areas showed an increasing trend,and the center of gravity moved northward.② The carbon emission efficiency showed a U-shaped trend of decreasing first and then increasing,and the spatial distribution characteristics were"high in the north and south,low in the middle".③ The coupling coordination degree between carbon emission efficiency of grain production and grain yield increase continued to in-crease.In 2022,most provinces in the study area achieved coordinated development.Based on the above conclusions,policy rec-ommendations are provided for promoting the grain yield and production efficiency and green and low-carbon development.
万方数据
维普
