| The particularity,complexity and diversity of landscape space make space composition a hot topic in landscape architecture.The study of space composition is of great significance for revealing the common rules behind the complex appearance of space.The lack of spatial information and the limitations of technical methods have led to more perceptual components than rationality in the research on the composition of traditional landscape space,which mostly stays at the qualitative level and lacks quantitative support.The development of technologies such as UAV oblique photography,3D laser scanning and other spatial information collection and spatial digital modeling have provided strong support for the scientific research on the composition of landscape space.This research aims to systematically,comprehensively and quantitatively explore the composition rules of landscape space,draw quantitative conclusions that can guide the construction of landscape space,explore refined and verifiable landscape design approaches.On the basis of systematically combing the spatial structure system of the landscape space,the research focuses on the four spatial composition levels of spatial unit,adjacent units,spatial sequence and spatial integrity.The research is carried out through the path of model acquisition,quantitative description,rule interpretation and design generation,comprehensively using spatial information collection technology,spatial data analysis technology,data statistical analysis method and spatial simulation construction technology.The closed-loop research from the case space to the composition rules,and then from the composition rules to the design has been realized.The research mainly includes the following three stages:The first is to construct a digital model library of the case space.The research uses spatial information acquisition,spatial modeling and other technologies to realize spatial 3D morphological data acquisition and spatial digital model construction,and proposes a set of methods to extract 3D model of spatial units,adjacent units and spatial sequences from the overall model.On this basis,14 excellent landscape spaces that have been built are selected as research cases to complete the construction of the digital model library of the case spaces.The second is to establish a variable index system of landscape space.The thesis converts the digital model information into digital index information by selecting the index factors that have the symbolic significance for the spatial features.A variable index system of spatial unit form,adjacent units relationship,spatial sequence change and spatial overall structure is built,and the digital description of the variables of landscape space is realized.The third is the threshold analysis of the landscape space composition.Supported by a large number of spatial case data,this paper classifies and summarizes the space according to the common features of the space composition.Using non-parametric testing,multiple comparison analysis,and threshold interval analysis methods,the common rules of landscape space composition are described as thresholds for quantitative characterization factors.In the thesis,the thresholds of spatial unit,adjacent units,spatial sequence and the overall space are obtained respectively.The classification of landscape space and the research conclusion of composition threshold provide a space paradigm that can be referred to and used for reference for design.The threshold of space composition can be applied to the design guidance in the early design period,the design inspection in the mid-period,and the optimization process of the design in the later period to assist the designer in the decision-making,judgment and optimization of the design program.The design method of landscape space based on composition threshold has a positive effect on the realization of refined and high-quality landscape space design.The innovation of this article lies in:1.Established a variable index system of spatial composition from the unit to the whole2.Obtain the threshold interval of landscape space composition;3.Propose a set of evidence-based and refined methods for the construction of landscape space. |
