国土空间是一切经济社会活动的载体,探究其生态效率时空演化特征及影响因素对国土资源可持续利用和区域经济社会高质量发展具有重要意义.基于三区空间视角和多源数据构建国土空间利用生态效率(Territory Use Eco-efficiency,TUEE)测度体系,综合非期望产出Super-SBM模型、空间自相关分析和多尺度地理加权回归(MGWR)定量分析2000～2020年江苏省53个县域单元的TUEE水平、时空差异及驱动因素.结果表明:(1)江苏省TUEE水平呈现逐步提升趋势,城镇空间、生态空间生态效率稳步提升,农业空间生态效率先降低后升高;(2)江苏省TUEE从高水平县域零星分布逐步转为南高北低格局,沿海县域TUEE相较于内陆县域具备一定优势.研究期内,其存在显著空间正相关关系且不断增强,高高集聚分布在苏南县域,低低集聚分布在苏北县域;(3)江苏省TUEE影响因素存在空间异质性,气温、对外开放水平对其有显著促进作用,高程因素对其有显著抑制作用,人口密度和经济发展水平对其有促进作用但不显著.据此,应通过加强县域间联系、因地制宜开展国土空间利用活动、优化产业结构和政府投入等方式,提升江苏省国土空间利用整体生态水平.
Spatial-temporal Differentiation and Influencing Factors of Territory Use Eco-Efficiency in Jiangsu Province from the Perspective of Three-Zone Space
Territory is the basis of all economic and social activity.Exploring the spatial-temporal characteristics and influencing factors of eco-efficiency is of great significance to the sustainable utilization of territory resources,as well as to economic and social development.Based on the Three-Zone Space perspective and multi-source data,the Territory Use Eco-Efficiency(TUEE)measurement system was constructed.The Undesirable Super-SBM model,spatial autocorrelation analysis and multi-scale geographically weighted regression(MGWR)were used in this study to analyze TUEE levels,spatial-temporal differences,and the driving factors in 53 counties in Jiangsu Province from 2000 to 2020.The results showed that:(1)the TUEE level of Jiangsu Province generally showed a gradual upward trend during the surveyed period.The urban space and ecological space eco-efficiency were steadily improved,while the agricultural space eco-efficiency decreased at first but then increased;(2)Jiangsu Province was in the procedure of changing from a scattered distribution of counties with high TUEE levels,to a pattern of high-TUEE counties in the south and low-TUEE levels in the north.The TUEE in coastal counties had certain advantages over inland counties.During the study period,there was a significant spatial positive correlation,and the correlation was increasing.High-high agglomeration was distributed in southern Jiangsu counties,and the low-low agglomeration was distributed in northern counties.(3)There was spatial heterogeneity in the influencing factors of TUEE levels in the province.Temperature and level of openness to the outside world had a significant promoting effect,while elevation had a significant inhibitory effect.Population density and level of economic development also had a promoting effect,but it was not statistically significant.Based on these findings,in order to enhance the overall TUEE of Jiangsu Province,it is necessary to strengthen inter-county connections,carry out territory utilization activities according to local conditions,optimize industrial structures and government investment structures.
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