玉米生态效率的时空差异及收敛性
The temporal and spatial differences and convergence of maize eco-efficiency
李欠男 1叶锋2
作者信息
- 1. 湖北文理学院经济管理学院,湖北 襄阳 441053
- 2. 江西农业大学经济管理学院,南昌 330045
- 折叠
摘要
运用EBM-Super-Malmquist指数法对2004-2018年玉米主产省(市、自治区)的生态效率进行测算,分析玉米生态效率的时间演变和地区分布特征,并运用收敛性方法检验玉米生态效率的收敛性.结果表明,玉米生态效率表现出波动下降趋势,地区之间存在明显的非均衡性特征;全国及四大区域玉米生态效率不存在σ收敛和绝对β收敛,地区差异不会无条件地缩小;全国及四大区域玉米生态效率存在显著的条件β收敛,受灾率、财政支持力度、人力资本是影响玉米生态效率条件β收敛的重要因素.
Abstract
Maize eco-efficiency of the main producing provinces(cities and autonomous regions)from 2004 to 2018 was calculated by the EBM-Super-Malmquist index method,the temporal evolution and spatial distribution characteristics of maize eco-efficiency were analyzed,and the convergence of maize eco-efficiency was tested by the convergence method.The results showed that,maize eco-efficiency showed a fluctuating downward trend,and there were obvious characteristics of imbalance between regions.There were no σ convergence and absolute β convergence in maize eco-efficiency across the country and the four major regions,and regional dif-ferences would not be unconditionally narrowed.There were significant condition β convergence for maize eco-efficiency across the country and the four major regions.Disaster rate,financial support and human capital were important factors that affected β conver-gence of maize eco-efficiency condition.
关键词
玉米/生态效率/EBM-Super-Malmquist指数/时空差异/收敛性Key words
maize/eco-efficiency/EBM-Super-Malmquist index/temporal and spatial differences/convergence引用本文复制引用
基金项目
湖北省教育厅哲学社会科学研究青年项目(22Q183)
湖北文理学院科研启动基金(kyqdf2021009)
出版年
2024
国家科技期刊平台
NSTL
万方数据