PDF HTML阅读 XML下载 导出引用 引用提醒 快速城镇化过程中的城市蔓延与生态保护冲突空间识别与量化评估——以长三角生态绿色一体化发展示范区为例 DOI: 10.5846/stxb202102070402 作者: 作者单位: 作者简介: 通讯作者: 中图分类号: 基金项目: 国家重点研发计划项目(2016YFC0502702) Spatial identification and quantitative evaluation of conflict space between urban sprawl and ecological protection in the process of rapid urbanization: A case study of the Yangtze River Delta Eco-Green Integrated Development Demonstration Zone Author: Affiliation: Fund Project: National Key Research and Development Program(2016YFC0502702) 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:如何解决社会经济发展与生态环境保护之间的矛盾是实现区域和城市可持续发展的首要问题, 表现在空间上就是城市无序蔓延与生态环境保护用地的冲突, 本质上是建成区与非建成区的生态系统之间的冲突。以长三角生态绿色一体化发展示范区为例, 基于自然环境因子和社会经济因子构建城市蔓延风险空间量化评估模型, 得到城市蔓延风险空间分布并提取城市蔓延严重风险区;利用生态侵蚀度指数识别评估生态保护压力空间并提取生态保护压力高值区。根据城市蔓延严重风险区与生态保护压力高值区的重合空间, 对城市无序蔓延与生态保护的冲突程度进行分析, 进而探讨快速城镇化发展过程中二者的协调关系, 为城市国土空间规划与区域生态保护决策提供科技支撑。长三角生态绿色一体化发展示范区案例研究结果表明:(1)城市蔓延的严重风险区与生态保护压力高值区的重合面积达到583.83km2;其中较高风险区与侵蚀度高的地区重合面积为311.73km2, 冲突度为53.39%;高风险区与侵蚀度高的地区重合面积为47.70 km2, 冲突度为8.17%。(2)示范区内各类生态系统中, 耕地生态系统受城市蔓延冲突程度均为最高, 其在较高和高风险区的占比分别为91.58%、8.42%;其次是草地生态系统。为协调城市蔓延与生态保护空间的关系, 保障示范区生态绿色一体化发展。进一步识别了示范区内生态预警区和城市蔓延重点关注区, 其中生态预警区内需要充分的生态修复, 降低生态保护压力;城市蔓延重点关注区在建设时要注意保护原有生态保护压力大的区域, 加强生态工程建设, 管控建设用地规模, 保障蓝绿空间占比。 Abstract:How to solve the contradiction between the social economy and the ecological environmental protection is a basic problem to understand the regional and urban sustainable development, which is manifested in the conflict space between urban sprawl and ecological protection. It's an essential conflict between the ecosystem of built-up and unbuilt-up areas. This article selects the Yangtze River Delta Eco-Green Integrated Development Demonstration Zone as the research area. Based on natural environment and socio-economic factors, we constructed a spatially quantitative evaluation model for urban sprawl risks to generate the spatial distribution of several risk areas and extract the serious risk areas of urban sprawl. Moreover, the ecological erosion index was used to identify and evaluate the ecological protection pressure space and extract the high value areas of ecological protection pressure. According to the overlapping space between the serious risk area of urban sprawl and the high value area of ecological protection pressure, the conflict degree between urban sprawl and ecological protection was analyzed for the coordinated relationship between the urban sprawl and ecological protection in the process of rapid urbanization. We aim to provide scientific and technological support for urban territorially spatial planning and regionally ecological protection decision-making. The results showed that: (1) the overlap space between the serious risk area of urban sprawl and the high value area of ecological protection pressure reached 583.83 km2. The overlap area between the areas with higher urban sprawl risk and the areas with higher ecological erosion degree was 311.73 km2 and the conflict degree was 53.39%. The overlap area of the highest risk area and the highest erosion area was 47.70 km2, and the conflict degree was 8.17%. (2) In the demonstration area, the cultivated land ecosystem suffered the highest degree of urban sprawl conflict, accounting for 91.58% and 8.42% in the higher and the highest risk areas, respectively, followed by the grassland ecosystem. In order to coordinate the balance between urban sprawl and ecological protection, and ensure the sustainable development of the Demonstration Zone, this article further identified the ecological early warning area and key concern area in the demonstration area of integrated development of ecological green in the Demonstration Zone. In the construction of the key areas of urban sprawl, attention should be paid to the protection of the original areas under great ecological protection pressure, the ecological engineering construction should be strengthened, the scale of construction land should be controlled, and the proportion of blue and green space should be guaranteed. 参考文献 相似文献 引证文献
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