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生态学杂志 ›› 2020, Vol. 39 ›› Issue (11): 3795-3807.doi: 10.13292/j.1000-4890.202011.022

• 研究报告 • 上一篇    下一篇

成都市中心城区城市公园景观连通性

罗言云1,2,李春容1,谢于松1,王倩娜1*   

  1. 1四川大学建筑与环境学院, 成都 610065;2加州大学伯克利中国研究中心, 伯克利 94704)
  • 出版日期:2020-11-11 发布日期:2021-05-10

Landscape connectivity of urban parks in the downtown of Chengdu.

LUO Yan-yun1,2, LI Chun-rong1, XIE Yu-song1, WANG Qian-na1*#br#   

  1. (1College of Architecture and Environment, Sichuan University, Chengdu 610065, China; 2Center for Chinese Studies, University of California, Berkeley, Berkeley 94704, CA, USA).
  • Online:2020-11-11 Published:2021-05-10

摘要: 城市公园作为城市绿地系统的重要组成部分,是公园城市建设的空间载体,在高密度中心城区中发挥着重要的生态及社会效益。然而,景观连通性作为评价生态系统功能和生态格局的核心指标之一,在城市公园的研究中却鲜有论述。为进一步优化城市整体生态格局、改善城市人居环境,提高成都市公园城市建设质量和水平,以成都市中心城区内的32个主要城市公园为研究对象,采用2015年遥感影像数据,基于形态学空间格局分析(MSPA)及景观连通性指数分析,对公园的结构连通性与功能连通性进行了评价。结果表明:成都市中心城区内城市公园整体景观基底较好,网络结构要素占比均值前三位分别是大型核心(48.15%)、边缘(23.36%)、连接桥(10.83%),各公园呈现多样化的构成特点;与廊道相比,城市公园在斑块要素上优势明显;基于dIIC值分级结果,各城市公园在景观连通性重要程度上存在较为明显的空间分布差异;城市公园的结构连通性与功能连通性间存在互相支撑、互相影响的关系。建议未来加强三环路与四环路之间重要斑块及公园的保护,重视城市公园内大中小型核心的过渡及衔接,并结合相关战略行动提升城市公园景观连通性。

关键词: 风景园林, 景观连通性, 形态学空间格局分析, 斑块连通重要性指数, 高密度中心城区

Abstract:

 As an important component of urban green space system and space carrier of park city construction, urban parks play an important role in ecological and social benefits in high-density downtown. However, as one of the core indicators for ecosystem function and ecological pattern, landscape connectivity is rarely examined in urban parks. Using remote sensing image data of 2015, based on the Morphological Spatial Pattern Analysis (MSPA) and landscape connectivity index analysis, we evaluated the structural connectivity and functional connectivity of 32 main urban parks in the downtown of Chengdu. The aim of this study was to further optimize the overall ecological pattern of the city, improve the urban living environment, and promote the park city construction in Chengdu. The results showed that the overall landscape matrix of the urban parks behaved well. The top three mean proportions of network structure elements were the large core (48.15%), the edge (23.36%), and the bridge (10.83%). The parks were diverse in composition characteristics. Compared with corridors, urban parks had obvious advantages in patch elements. The classification results of dIIC value showed significant spatial distribution differences in the importance of landscape connectivity among urban parks. Urban parks were dependent on each other with respect to structural connectivity and functional connectivity. It is recommended to strengthen the protection of important patches and parks between the 3rd ring road and the 4th ring road, pay attention to the transition and connection of large, medium and small cores inurban parks, and improve landscape connectivity of urban parks in combination with relevant strategies and actions.

Key words: landscape architecture, landscape connectivity, morphological spatial pattern analysis, importance index of patch connectivity, high-density downtown of city.