生态系统服务优化导向下城市绿色基础设施构建研究——以济南市西部新城为例

Research on the Construction of Green Infrastructure under the Guidance of Ecosystem Service Optimization: A Case Study of Jinan Western New District

绿色基础设施作为提升人居环境质量的重要手段,可为城乡居民提供多样化生态系统服务。快速城镇化进程不仅会引起绿色基础设施数量减少、布局不均,还会导致其内在的生态系统服务功能降低以及结构失衡。传统的绿色基础设施构建方法重点考虑生态空间的管制途径,忽视了各类生态系统服务的功能优化和结构平衡。在识别了济南市西部新城绿色基础设施供给、支持、调节、文化4类生态系统服务源的基础上,基于"结构—过程—功能—服务"评估框架,构建维持4类生态系统服务流的关键格局。同时,考虑建成区内部及城郊地区生态系统服务的核心功能差异,赋予其不同权重,重点提升城市建成区内部破碎斑块的文化、调节功能,维持城郊地区大面积生态斑块的供给、支持和调节功能,构建底线、适宜、理想3层级安全水平下的绿色基础设施。

As an important method to improve the quality of human settlements, green infrastructure can provide diversified ecosystem services for urban and rural residents. The rapid urbanization process will not only lead to less green infrastructure and unbalanced layout, but also lead to the reduction of intrinsic ecosystem services and the structural imbalance. The traditional construction methods of green infrastructure mainly consider the regulatory pathways of ecological space, ignoring the functional optimization and structural balance of various ecosystem services. In this study, on the basis of identifying the supply, support, regulation and culture ecosystem service sources of green infrastructure in Jinan Western New District, the key pattern of maintaining the four types of ecosystem service flow is constructed based on the evaluation framework of "structure-process-function-service". At the same time, considering the differences of core functions of ecosystem services in the urban and suburban areas, we give them different weights, focusing on promoting the culture and regulation function of broken patches in urban built-up areas and maintaining the supply, support and regulation function of large ecological areas in suburban areas. The integrated green infrastructure is constructed under the three-level protection level of bottom line, satisfactory and ideal.