武汉城市圈城市用地扩张对经济增长贡献度的动态研究——“两型社会”试验区设置前后的比较

A DYNAMIC RESEARCH ON THE CONTRIBUTION OF URBAN LAND EXPANSION TO ECONOMIC GROWTH IN WUHAN METROPOLITAN AREACOMPARISON BEFORE AND AFTER THE “RESOURCE-ECONOMICAL AND ENVIRONMENT-FRIENDLY SOCIETY” EXPERIMENTAL ZONE ESTABLISHMENT

运用索洛余值法量化测度武汉城市圈＂两型社会＂试验区设置前后（2000～2006年和2007～2012年）各县区的TEP以及资本、劳动、土地、中间投入品等生产要素供给对经济增长的贡献度,为促进武汉城市圈供给侧结构性改革及提升土地要素产出效率提供参考。结果显示：武汉城市圈经济发展主要依靠资本、劳动等生产要素的投入以及技术进步,土地扩张对经济增长的影响相对较低,中间投入品的影响微弱;武汉城市圈＂两型社会＂实验区的规划设置提升了土地要素供给对经济发展的贡献率,城市土地扩张的产出效率有所增强,但在要素投入中仍显微弱、增幅较小,ΔES与ΔTEP的差距与对应区域产业结构对土地投入的依赖性呈反比。研究发现：武汉城市圈在经济发展中需要继续推进技术革新,加大对劳动力素质的培训及优质人才的吸引,促进经济增长方式由粗放转向集约;大力推行政策扶持以提高土地对经济的参与程度,以城市圈为整体统筹规划城市用地的供给,根据区域产业结构和资源优势制定差别化的土地供给与经济发展政策,从＂供给侧改革＂出发在作用原理及机制上集约利用土地。

To promote structural reform of the supply front in the Wuhan Metropolitan Area and improve production efficiency of land, each county＇s TEP and the contribution of capital, labor, land, as well as intermediate inputs to economic growth were analyzed before and after the establishment of ＂Resource-economical and Environment-friendly Society＂experimental zone of the Wuhan Metropolitan Area（2000~2006 and 2007~2012） using the Solow residual method. The results showed that the economic development in Wuhan Metropolitan Area mainly relied on input of capital, labor and technology progress, while the contribution of land expansion to economic growth was relatively low. Remarkably,intermediate inputs had a weak effect on economic growth. Furthermore, ＂Resource-economical and Environment-friendly Society＂ experimental zone establishment elevated the land element contribution to economic growth. Although the output efficiency of urban land expansion was enhanced, but it was still weak and less increased compared with the input of other factors. We also observed that the gap between ΔES and ΔTEP was inversely proportional to the dependence of the corresponding industrial structure on land. The following conclusions can be drawn： on the one hand, the government should continue to promote technical innovation in the economic development, put efforts into labor force training, and attract high quality talents, so as to make the economic development direction from extensive growth to intensive growth.On the other hand, firstly, the government should push forward the corresponding policy to support industry development involving land and improve the participation degree of the land on the economy. Secondly, the government should make master planning of urban land expansion in the whole Wuhan Metropolitan Area and develop corresponding policy of land supply and economic development according to the difference of the industrial structure and resource superiority. Finally,the government should pay more attention to intensive land utilization on the principle and mechanism aim of structural reform of the supply front.