多尺度绿地景观格局对滞蓄能力的影响研究

城市绿地系统作为构建城市海绵系统中的重要组成要素,通过优化绿地景观格局以提升城市整体滞蓄能力的方式更符合可持续发展的要求。以沈阳市三环内建成区为研究范围,利用景观格局指数方法,对城区、场地2个研究尺度的绿地景观格局进行评价,并利用相关性分析与回归分析等数理统计方法对2个研究尺度的绿地景观格局与内涝风险之间的关系进行分析。得到结论:在城区尺度上,各类绿地景观格局指数对于绿地滞蓄能力影响大小依次为绿地规模特征指数>绿地形态特征指数>绿地分布特征指数;在场地尺度上,各类绿地景观格局指数对于绿地滞蓄能力影响程度依次为绿地分布特征指数>绿地规模特征指数>绿地形态特征指数。通过量化研究得到了不同尺度绿地景观格局对于滞蓄能力的影响规律,可在未来的海绵城市规划中,为不同层次绿地系统布局的规划管理提供参考和借鉴。

Research on the Impact of Multi-scale Green Space Landscape Pattern on Stagnation Capacity

The urban green space system is an important component in the construction of the urban sponge system. It is more in line with the requirements of sustainable development to improve the overall stagnant storage capacity of the city through the optimization of the green space landscape pattern. This paper takes the built-up areas within the third ring road of Shenyang as the study area, and applies the landscape pattern index method to evaluate the green space landscape pattern at the urban area and site scales. It uses mathematical statistics methods such as correlation analysis and regression analysis to evaluate the two research scales, and analyze the relationship between green space landscape pattern and waterlogging risk. It concludes that on the urban scale, the impact of various types of green space landscape pattern indexes on the stagnation capacity of green land is as follows: green land scale characteristic index > green land morphological characteristic index > green land distribution characteristic index. On the site scale, the order of impact of various green land landscape pattern indexes on the stagnation capacity of green land is as follows: green land distribution characteristic index > green land scale characteristic index > green land morphology characteristic index. Through quantitative research, it obtains the influence of different scales of green space landscape patterns on the retention capacity, which provides reference for the planning and management of different levels of green space system layout in future sponge city planning.