基于碳排放测算的湖北省土地利用结构效率的DEA模型分析与空间分异研究

Regional Differentiation Characteristics and Optimization of the Structural Efficiency of Land Use in Hubei Province Based on the Carbon Emissions

运用湖北省16个城市2000、2005、2010和2012年的土地利用结构数据,综合考虑城市用地的经济产出和环境产出,采用含有非期望产出的DEA模型,测算并分析各城市的土地利用结构效率的空间差异及演变规律,并提出改进方案。结果表明:1湖北省各城市土地利用结构效率整体水平较高,各城市的效率值大体呈现出先上升后下降再提升的趋势;2土地利用结构效率的空间分异格局由2000年以武汉市为最高值向周边城市递减的单一中心格局,逐步演变为2012年的鄂东南和鄂西部的双中心格局;3武汉周边城市土地利用结构效率偏低,且具有较大的减碳提效空间;4湖北省大部分城市建设用地冗余、二三产业产值不足、净碳排放量过高,以上问题的存在制约着土地利用结构效率的提升;5省会城市、城市圈城市、鄂西圈城市的理想土地利用结构具有明显的差异性。

Based on the land use structure data of 2000, 2005, 2010, 2012 and the calculation of Carbon emissions, ecosystem service valuation of 16 cities in Hubei Province, we used the method of DEA to analyze the efficiency of the land use structure and its spatial variance. It can be concluded that： 1 ）The overall efficiency of land use structure in Hubei Province was in a relatively high average, the efficiency of each city generally shown signs of fluctuating increase during the study period; 2） the spatial variance of the efficiency has been changed, in 2000 the highest value appeared in Wuhan which was the single center, but gradually evolves into the structure of two centers in southeastern and western in 2012; 3）to the cities around Wuhan, the efficiency of land use structure was relatively low, these cities havb great space on carbon emissions; 4）Most cities in Hubei Province are confronted with problems such as redundant construction land, lack of tertiary industry output, high net carbon emissions , which restricts enhance the efficiency of land use structure; 5）There are significant differences in the optimal land use structure of cities in Hubei province.