收缩情境下城市土地利用及其生态系统服务的研究进展

随着国际国内社会经济环境的变化,城市收缩这一新现象逐渐在我国部分城市区域空间中呈现,成为未来新型城镇化转型的挑战之一。在简要梳理城市收缩相关文献的基础上,以土地利用为主线,重点关注收缩情景下的土地利用模拟及其政策、空置土地与城市生态系统服务等方面的相关研究。研究结果表明:(1)当前对城市收缩问题的研究主要集中于人口变动和经济发展维度,对由此引发的土地利用以及生态系统变化关注较少。(2)土地利用模拟在分析和预测收缩情境下的城市土地利用变化上具有较大价值,但不同模型适用于不同研究情景,复合模型将具有更好的解释力。(3)土地利用政策的制定和实施应充分考虑经济社会各方面诉求,绿色空间存储制度是促进收缩城市可持续发展的有力措施。(4)城市收缩产生的空置土地为发展生态系统服务提供了空间,应发展适用于我国城市收缩的生态系统服务评估方法。在我国城镇化进入"存量模式"甚至"减量模式"的背景下,应加大对城市收缩情景下土地利用和生态系统维度的研究,要积极借鉴并整合资源科学、地理学、生态学、管理科学和城市规划等相关学科的研究方法,并紧密结合我国当前城市发展和空间规划所面临的现实问题,促进城市收缩研究的方法创新和收缩城市的可持续发展。

Research progress of urban land use and its ecosystem services in the context of urban shrinkage

With the transformation of international and domestic socio-economic environment, the new phenomenon of urban shrinkage has emerged in some urban areas of China, and become one of the new challenges in new-type urbanizing China. Based on a brief review of the literature on urban shrinkage, this paper focuses on land use simulation and its policies, vacant land and urban ecosystem services under the shrinkage scenarios. The research indicates that: (1) The current research on urban shrinkage in China has mainly concentrated on the dimensions of urban population loss and economic development while less attention is focused on land use and urban ecosystem changes. (2) Land use simulation has great value in analyzing and predicting urban land use change under shrinkage scenarios, but different models are applicable to different research scenarios, and compound models will have better explanatory power. (3) The formulation and implementation of land use policies should fully consider all aspects of economy and society; The green space storage system is a powerful instrument to promote the sustainable development of shrinking cities. (4) The vacant land generated by urban shrinkage provides space for the development of ecosystem services; an ecosystem service assessment method that is suitable for urban shrinkage in China should be developed. (5) In the context of China's urbanization entering the "stock model" or even the "reduction model", research on land use and ecosystem dimensions under urban shrinkage scenarios should be concerned. It is necessary to actively learn from and integrate research methods of related disciplines such as resource science, geography, ecology, management science and urban planning, and closely combine the practical problems faced by China's current urban development and spatial planning, thus promoting the innovation of urban shrinkage research methods and the sustainable development of the shrinking cities.