Research On The Construction Method Of Urban Open Space System In Mountainous Cities Based On Visual Landscape Mapping

Urban open space is the only space type in the city with the dual attributes of "protecting the natural ecological environment and meeting the needs of human recreation activities".Systemizing urban open space is an important measure to maximize the protection of natural ecological environment and optimally meet the needs of human leisure activities.The current urban open space system planning methods,either take the natural ecology as the constraint,frame the ecological function of important,ecological sensitive land composition;Or the area that radiates the most urban population is anchored based on the accessibility scale,which is dominated by the needs of human recreation activities.However,both methods lack the consideration of the cascade relationship between natural ecology and human activities,and fail to give the urban open space system dual attributes.In view of the current urban open space system planning method,the lack of double attributes of problems in this study introduced a cascade of natural ecology internal and external service human activity needs,in a larger scale and scope of converting the natural ecology to landscape aesthetics by using the theory of visual landscape concept and visual landscape management,visual landscape for knowledge resources,The natural ecological inner beauty(landscape)mapping for building urban open space of the visual landscape "source",the demand for human recreation activities on landscape beauty of urban open space "with" visual landscape,natural ecological beauty of internal and external service idea league in human visual understanding relationship between leisure demand reflects as the visual landscape "flow",A visual landscape mapping method consisting of "identifying the ’source’ of the visual landscape,mining the ’use’ of the visual landscape and the trade-off of the ’flow’ of the visual landscape" was established.Yiliang County,Zhaotong City,Yunnan Province,a mountainous city with a rich visual landscape level,with "three-dimensional ecology,multi-dimensional landscape and intensive construction",was selected for practical verification.The urban open space system is endowed with the "dual attributes" of cascading natural ecological protection and human recreation activities.This paper adopts four research frameworks: background research,research review method construction case study.Firstly,background research is conducted to understand the importance of urban open space for urban ecological security and the improvement of people’s quality of life under the current background of the era,and to make clear that the construction of open space in mountain cities needs to link natural ecology and human activities.Secondly,in the research review,through the analysis of the characteristics of open space in foreign mountain cities and traditional mountain towns in China,the construction characteristics of three-dimensional ecology,landscape culture and intensive complexity of open space in mountain are clarified.And on this basis to guide subsequent urban open space system planning method of the search and based on the natural ecological dominance,demand leading to activities,based on visual landscape resources of the trend of urban open space system planning method,clear contact with visual landscape of natural ecology and human activities to guide urban open space system planning,At the same time,the principle of "source-use-flow" method is extracted from the application of the current visual landscape in the open space.Then,in the construction of the method,the construction method of the open space system of mountain city based on the visual landscape "source","use" and "flow" mapping is established.At last,the feasibility of the method is confirmed through the case study of Yiliang County urban area.The research results meet the comprehensive consideration of the needs of natural ecology and human activities in urban open space,provide a new method for urban open space system planning,and provide a case reference for the construction of open space system in mountain cities.