基于SFA模型的城市土地利用效率评价与开发潜力提升研究OA北大核心CSTPCD
Evaluation of Land Use Efficiency and the Promotion of Development Potential in Yangtze River Delta Using SFA Model
[目的]揭示城市土地利用效率评价与开发潜力情况,为推进长三角地区城市土地高效集约利用提供科学依据.[方法]以长三角地区为考察对象,构建SFA模型评估城市土地利用效率,并测算了土地开发潜力.[结果](1)城市土地利用效率逐年上升,区域间效率差距扩大,从2005年的0.357升至2020年的0.478.空间分布上,"核心—外围"布局特征明显,沪宁杭等核心城市效率值较高,低值区分布于苏中的南通、扬州与浙北的舟山、台州等外围城市,呈现"大集聚—小分散"的分异特点,效率布局的非均衡趋势明显.(2)长三角地区土地集约潜力规模逐年上升,从2005年的1 183.2 km2增至2020年的2 590.8 km2,而土地集约潜力占比从2005年的66.18％降至2020年的59.00％.城市土地集约利用规模分级与占比分级表现出相异的变化规律,从不同视角共同揭示土地开发潜力的时空演变特征.(3)城市土地产出增加潜力规模在时间纵向轴上不断扩大,而土地产出增加潜力占比不断下降,从2005年的239.91％降至2020年的171.75％,其中上海、杭州等城市资本投入比重高、劳动力配置相对合理,土地利用集约程度高,产出增加占比降幅仅有30％.[结论]研究期间长三角地区城市土地利用效率逐年升高,土地集约潜力规模和比例也不断上升,这为明确城市经济内涵式发展提供了现实路径,也为城市土地高效利用、潜力挖掘提供了新方法.
[Objective]The aims of this study are to reveal the evaluation and development potential of urban land use efficiency,and to provide scientific basis for promoting efficient and intensive use of urban land in the Yangtze River Delta region.[Methods]The Yangtze River Delta region was used as the research object.An SFA model was construct to evaluate urban land use efficiency and calculate land development potential.[Results](1)During the research period,the land use efficiency of cities in the Yangtze River Delta increased year by year,and the efficiency gap between regions increased from 0.357 in 2000 to 0.478 in 2020.In terms of spatial distribution,'core periphery'layout features were obvious,and the core cities such as Shanghai,Nanjing and Hangzhou had higher efficiency values.Low value areas were distributed in Nantong,Yangzhou,Zhoushan,Taizhou and other marginal cities in the middle of Jiangsu Province,showing the differentiation feature of'large agglomeration and small dispersion'.At the same time,the unbalanced development trend of efficiency layout was significant.(2)The scale of land intensive potential in the Yangtze River Delta had increased year by year,from 1 183.2 km2 in 2000 to 2 590.8 km2 in 2020,while the proportion of land intensive potential had decreased from 66.18％in 2000 to 59.00％in 2020.The scale classification and proportion classification of urban land intensive use showed different rules of change,and revealed the space-time evolution characteristics of land development potential from different perspectives.(3)The scale of potential increase of urban land output had been expanding in the vertical time axis,while the proportion of potential increase of land output in 16 cities had been declining,from 239.91％in 2000 to 171.75％in 2020.Among them,capital investment and labor allocation in Shanghai,Hangzhou and other central cities were relatively reasonable,land use intensity was high,and the proportion of output increase was only 30％.[Conclusion]During the research period,land use efficiency in Yangtze River Delta region had been increasing year by year,and the scale and proportion of land intensive potential had also been continuously increasing,which can provide a practical path for clarifying the connotation of urban economic development,and also provide new methods for efficient use and potential exploration of urban land.
杨清可;王磊;赵金丽;李颖;朱高立;王雅竹
南京财经大学公共管理学院,南京 210023中国科学院南京地理与湖泊研究所,南京 210008山东师范大学地理与环境学院,济南 250358
地理科学
随机前沿分析土地利用效率土地开发潜力长三角地区
stochastic frontier analysisland use efficiencyland development potentialYangtze River Delta
《水土保持研究》 2024 (006)
328-335,343 / 9
国家自然科学基金(42371191,42101163,42201317);中国科学院南京地理与湖泊研究所自主部署项目(NIGLAS2022GS06);南京财经大学校级科研课题一般项目(XKYC3202404)
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