鄱阳湖生态经济区土地利用效率测度及其提升路径分析

采用DEA模型和Malmquist生产率指数模型,从“低碳化”和“集约化”2个视角,揭示了2009—2011年鄱阳湖生态经济区土地利用效率水平.研究发现:1)鄱阳湖生态经济区土地集约化利用效率和低碳化利用效率均比较低,粗放式和高碳化利用现象较为普遍; 2)随着鄱阳湖生态经济区建设上升为国家战略,得益于技术进步的贡献,土地集约化和低碳化利用的全要素生产率总体呈现较为明显的增长态势; 3)鄱阳湖生态经济区土地利用效率类型包括低碳集约型、低碳粗放型、高碳集约型、高碳粗放型4种组合.为此,提出在土地利用过程中,应因地制宜选择单向突破式、渐进式和跳跃式的提升路径,合理增加对土地的投入,降低土地利用消耗,提高单位土地产出水平和减少CO₂碳排放总量,推进土地集约化和低碳化利用.

The Analysis on Efficiency Measuring and Improving Path of Land Use in Poyang Lake Eco-Economic Zone

The purpose is to reveal the land use efficiency of Poyang Lake Eco-economic Zone from 2009 to 2011 using DEA model and Malmquist productivity index.The results show that in the Poyang Lake Eco-economic Zone the land intensive and low-carbon use efficiency was low,land extensive and high-carbon use phenomenon was common; with constructing Poyang Lake Eco-economic Zone rose to national strategy,TFP of land intensive and low-carbon use show overall growth trend due to the contribution of technical progress; land use efficient portfolios include low-carbon intensive,low-carbon extensive,high-carbon intensive and high-carbon extensive.It concludes that government should suit local conditions to choose single-breakthrough,evolutionary and skipping paths in order to increase land investment reasonably,reduce land consumption,improve land output level,reduce the total amount of carbon dioxide emissions.