基于景观织补理论的城市街道景观分析

我国城市正面临存量精细化建设的新阶段，城市街道景观的破碎化导致了部分街道忽略了其承载市民公共活动的重要功能。以破碎环境织补和连接为理念的景观织补理论对街道景观建设具有指导意义。本文总结了街道景观织补理论的特征，使用金字塔场景分析网络（pyramid scene parsing network，PSPNet）分析哈尔滨市1098条街道的街景影像，并以景观织补理论为视角分析哈尔滨市街道景观质量，最终发现研究区域内建筑与天空界面的变化剧烈程度、街道围合度、线密度、建筑可视因子、步行道路、各类兴趣点（point of interest，POI）的密度分布相似，均呈中心高四周低的分布态势，而植物界面变化剧烈程度、天空可视因子、植被可视因子、交通标识在图像中的占比、机动车道路在图像中的占比分布相反。本研究揭示了哈尔滨城市街道景观织补理论特征的分布和内在关系，丰富了景观织补理论研究体系，以期为城市视角下街道景观织补策略提供一定思路。

Analysis of Urban Street Landscape Based on Landscape Weaving Theory

China''s cities are facing a new stage of refined stock construction. The fragmentation of the urban street landscape has led to some streets neglecting their important function of carrying out the public activities of citizens. The landscape weaving theory based on the concept of broken environment patching and connection has guiding significance for street landscape construction. The characteristics of the street landscape weaving theory were summarized, the street landscape images of 1098 streets in Harbin were analyzed by using Pyramid Scene Parsing Network (PSPNet), and the street landscape quality of Harbin was analyzed from the perspective of the landscape weaving theory. Finally, it is found that the intensity of changes between the building and sky interface, street enclosure, linear density, building visual factors, pedestrian roads, and the density distribution of various Points of interesting (POI) in the study area are similar, showing a distribution trend of high in the center and low around, However, the intensity of plant interface change, sky visibility factor, vegetation visibility factor, the proportion of traffic signs in the image, and the proportion of motor vehicle roads in the image are opposite. This study analyzes the distribution and intrinsic relationship between the theoretical features of Harbin''s urban street landscape weaving and enriches the research system of landscape weaving theory, intending to provide some ideas for street landscape weaving strategies from an urban perspective.