低效工业用地再开发对土地生产率的影响研究——基于江苏A市的双重差分模型的实证分析

Research on the Impact of Inefficient Industrial Land Redevelopment on Land Productivity——An Empirical Analysis Based on the DID Model in A City of Jiangsu Province

科学评估低效工业用地再开发政策对提升土地生产率的实际效果及不同政策模式的绩效差异,对优化低效用地再开发政策具有重要意义。文章基于江苏A市2015—2020年企业层面数据,采用双重差分模型实证评估低效工业用地再开发及不同模式对企业土地生产率的影响。结果表明:①低效用地企业土地生产率在再开发项目实施后,相比其他低效用地企业提高162%。②政府主导模式、自主开发模式、市场参与模式下低效工业用地生产率比再开发前分别提高了194%、215%、179%;产业发展水平、政府收储成本、收益分配机制、工业用地等二级市场发育程度是解释不同再开发模式效应差异的主要因素。建议各地区以提高原土地权利人自主再开发积极性、健全土地收储收益分配机制、加强土地二级市场培育及工业用地全生命周期管理作为再开发政策改进的重点,因地制宜完善不同模式下低效工业用地政策。

Scientific evaluation of the actual effects of inefficient industrial land redevelopment policies on improving land productivity and the performance differences of different policy models are of great significance to optimizing the redevelopment policies of inefficient industrial land.Based on the firm-level data of A city in Jiangsu province from 2015 to 2020,the paper uses the difference-in-differences (DID) model to empirically evaluate the impact of inefficient industrial land redevelopment and different modes on firm land productivity.The results show that:①The land productivity of enterprises with inefficient land use is 162% higher after the implementation of redevelopment projects than that of other enterprises with inefficient land use.②Compared with that before redevelopment,the productivity of inefficient industrial land under the government-led mode,independent development mode,and market participation mode increased respectively by 194%,215%,and 179%.The level of industrial development,the cost of government acquisition and storage,the income distribution mechanism,and the development degree of secondary markets of industrial land are the main factors of the difference in the effects of different redevelopment modes.To improve the inefficient industrial land policies under different modes according to local conditions,it is suggested that all regions should take the following as the focus of redevelopment policy improvement:improve the enthusiasm of original land right holders for independent redevelopment,improve the income distribution mechanism of land acquisition and storage,strengthen the cultivation of land secondary market and the whole life cycle management of industrial land.