南京林业大学学报(自然科学版) ›› 2024, Vol. 48 ›› Issue (3): 275-284.doi: 10.12302/j.issn.1000-2006.202208012

• 研究论文 • 上一篇    下一篇

城市绿地系统进化特征及驱动机制分析——以河南省许昌市为例

刘杰1(), 张浪1,*(), 张青萍2,*()   

  1. 1.上海市园林科学规划研究院,上海 200232
    2.南京林业大学风景园林学院,江苏 南京 210037
  • 收稿日期:2022-08-03 修回日期:2022-11-23 出版日期:2024-05-30 发布日期:2024-06-14
  • 通讯作者: *张浪(zl@shsyky.com),教授,负责选题及学术指导;张青萍(qpzh@njfu.edu.cn),教授,负责论文修改。
  • 作者简介:刘杰(liujie@shsyky.com),工程师,博士。
  • 基金资助:
    国家自然科学基金项目(32171569);上海市科委科技创新行动计划(19DZ1203301)

The evolution and driving mechanism of urban green space system: a case study of Xuchang City, Henan Province, China

LIU Jie1(), ZHANG Lang1,*(), ZHANG Qingping2,*()   

  1. 1. Shanghai Academy of Landscape Architecture Science and Planning,Shanghai 200232,China
    2. College of Landscape Architecture,Nanjing Forestry University,Nanjing 210037,China
  • Received:2022-08-03 Revised:2022-11-23 Online:2024-05-30 Published:2024-06-14

摘要:

【目的】 基于资源约束趋紧、用地集约发展的现状,分析城市绿地系统的生态、社会和经济功能,探讨其进化特征及深层驱动机制,为城市用地的高效配置、城市建设的决策支持提供依据。【方法】 选择河南省许昌市为研究对象,以2010、2014、2019年为研究时间节点,采用回溯法镶嵌土地利用模拟模型,结合随机森林(RF)回归从政策因素、自然因素、社会经济因素等方面解析城市绿地系统进化的驱动机制。【结果】 ①2010—2019年,许昌市城市绿地系统的空间进化趋势与城市规划政策的引导基本保持一致,主要向东北和北方向发展。②规划政策对于城市绿地系统的影响机制可能是积极的保护,也可能是消极的侵蚀;基于未来土地利用变化模拟模型,可反馈规划政策的作用机制,并建立政策失效的分析框架。③社会经济因素对乡镇级别城市绿地系统的面积变化和景观格局指数变化影响较为显著,自然因素的影响较小,尤其对位于平原地区的许昌市而言,地形的影响最微弱;景观格局指数斑块密度(PD)能较好反映城市绿地景观格局与各驱动因素之间的相关性。【结论】 规划政策因素为城市绿地系统进化的导向驱动,社会经济因素为城市绿地系统进化的直接驱动,而自然环境因素的驱动作用相对较弱;城市绿地系统进化驱动机制的探讨是增强新国土空间规划体系下城市绿地系统专项规划科学性、前瞻性的必要途径。

关键词: 城市绿地系统, 进化特征, 驱动机制, 社会经济因素, 政策因素, 许昌市

Abstract:

【Objective】 Owing to tighter resource constraints and intensive land development, we analyzed the ecological, social, and economic functions of urban green space system (UGSS), and determined its evolutionary characteristics and driving mechanism. To provide a basis for efficient urban land allocation and decision-making support for urban construction. 【Method】 Xuchang City (Henan Province) was selected as a case study, using time nodes data from 2010, 2014 and 2019. We applied the backtracking method with a land use simulation model and random forest regression; driving factors such as policy, natural and socioeconomic factors were analyzed. 【Result】 (1) From 2010 to 2019, Xuchang’s UGSS developed from the northeast and north, which was consistent with the guidance of urban planning policies. (2) The impact of planning policy on UGSS could either be positive protection or negative erosion. The GeoSOS-FLUS model and the backtracking method could simulate the changes in the UGSS, which could then be used to determine the impacts of the planning policy and establish an analytical framework for policy failure. (3) Socioeconomic factors had a significant impact on changes in the areas of township-level UGSS and the landscape pattern index, whereas natural factors had lower impacts. In Xuchang, which located on a plain, topography, had the smallest impact on changes in UGSS. The patch density changes in the UGSS had a high goodness of fit with each driving factor, which reflects the correlations between the UGSS landscape pattern and its driving factors. 【Conclusion】 Planning policy is the guiding driver of changes in UGSS, whereas socioeconomic factors directly drive changes in UGSS and natural factors have relatively little impact. Determining the evolution law of UGSS is necessary for enhancing scientific and forward-looking planning for UGSS under the new territorial spatial planning system.

Key words: urban green space system, evolution characteristics, driving mechanism, socioeconomic factors, policy factors, Xuchang City, Henan Province

中图分类号: