收缩城市建设用地利用效率时空分异及影响机制——以黑龙江省伊春市为例

建设用地是城镇经济社会活动的空间载体,其利用效率是调控建设用地扩张和配置的重要基础。论文以收缩型城市——黑龙江省伊春市为例,利用DEA模型测算了1995—2015年伊春市建设用地利用效率分析其时空演变规律,并运用地理探测器模型探究伊春市建设用地利用效率空间分异的影响机制,结论如下：① 1995—2015年伊春市建设用地利用效率整体水平不高,呈现“先上升、后下降”的发展态势,从时间演变来看,伊春市建设用地利用效率的区域差异性逐渐缩小,整体效率水平向低水平均衡方向发展;② 从建设用地利用效率的区域差异和空间特征来看,伊春市建设用地利用效率区域差异明显,效率水平呈现自南北两端向中部递减趋势,大体形成“外围区高、核心区低”的空间格局分异特征;③ 伊春市建设用地利用效率分异是多因素共同作用的结果,人均二、三产业GDP,非农人口密度,产业结构合理度,产业结构高级度和非农化率的差异与建设用地利用效率的空间格局分异具有高度关联性,但不同时期部分因素的影响程度和作用敏感性略有差异。

Spatiotemporal differentiation and influencing mechanism of construction land use efficiency of shrinking cities :A case study of Yichun City of Heilongjiang Province

Construction land is a spatial carrier of urban economic and social activities, and its utilization efficiency is an important basis for regulating the expansion and allocation of construction land. This study took the shrinking city Yichun of Heilongjiang Province as an example, and used data envelopment analysis (DEA) model and Geodetector to analyze the spatiotemporal change and influencing mechanism of spatial differentiation of construction land use efficiency from 1995 to 2015. The research reveals the following points: 1) The overall level of construction land use efficiency in Yichun City is not high, and it generally shows a trend of "rising first and then descending" from 1995 to 2015. From the perspective of temporal change, the regional differences of construction land use efficiency in Yichun were gradually decreasing, and the overall efficiency level developed towards a low-level equilibrium. 2) From the perspective of regional differences and spatial characteristics, the regional differences of construction land use efficiency in Yichun were obvious. Construction land use efficiency showed a decreasing trend from the northern and southern ends to the central part, which generally forms a spatial pattern of "high in the peripheral area and low in the core area". 3) Construction land use efficiency change in Yichun is the result of the joint action of multiple factors. The differences in per capita GDP of secondary and tertiary industries, non-agricultural population density, rationalization of industrial structure, optimization of industrial structure, and non-agriculturalization rate are highly related to the spatial differentiation of construction land use efficiency. However, the influence degree and sensitivity of some factors are slightly different in different periods.