武汉城市圈土地低碳 高效利用耦合特征及时空分析

研究土地低碳利用与土地高效利用的耦合协调关系，有利于合理高效地配置土地资源，推动土地利用向低碳、高效的方式倾斜。以武汉城市圈为例，分别构建了土地低碳利用水平与土地高效利用水平的评价指标体系；运用熵权法分别对2005-2013年土地低碳利用水平以及土地高效利用水平进行评价，探究两者的时空差异特征，并运用耦合度和耦合协调度模型对两者之间的耦合协调关系进行分析。结果表明：从时间演变来看，武汉城市圈土地低碳与土地高效利用水平均呈现上升趋势，但地区之间的上升情况存在差异；从空间特征来看，武汉城市圈内各城市土地低碳利用与土地高效利用的耦合协调度不断增强，总体朝着有序的方向发展，在空间上具有较为显著的正相关关系，存在一定的聚集特征。提出了促进武汉城市圈土地低碳 高效利用的政策建议：实行差别化的土地利用政策、探索低碳土地利用模式、增强武汉市的辐射带动作用等。

Coupling Characteristics and Spatial Temporal Analysis of Land Use in a Low carbon and Efficient Way in Wuhan City Circle

Research on the coupling coordination relationship between the low carbon use of land and the efficient use of land, is conducive to the rational and efficient allocation of land resources, and land use in an efficient and low carbon way. This paper takes Wuhan city circle as an example to separately establish the evaluation index system of low carbon use of land and the system of efficient use of land. Then, the low carbon utilization level and the efficient utilization level from 2005 to 2013 are evaluated by the method of entropy weight. On the basis of the analysis of the characteristics of space and time difference, the coupling degree and coupling coordination degree are analyzed by coupling degree and coupling degree model. The result shows that there is an increase in the low carbon utilization level and the efficient utilization level as time goes by yet the degree of increase varies from region to region. In terms of spatial characteristic, low carbon use and efficient use of land, the coupling coordination degree of which is strengthening in an orderly manner, show the feature of positive correlation and aggregation somehow. Finally, the paper proposes to use the land in a low carbon and efficient way by methods of flexible policy making and using, new land use models and radioactive effect of Wuhan city circle.