Construction And Application Of Spacial Structured Organization Model Of Vegetation Landscape Spatial Data

Vegetation landscape is an important part of the construction of ecological civilization,and it is also the main way for the people to share the fruits of green development.Geographic information systems can collect,store,manage,and display vegetation landscape data effectively.This requires spatial data models to provide necessary support.However,the landscape of vegetation has the characteristics of hierarchy,structure,and tense,and the traditional data model is difficult to realize the visualization of vegetation landscape.Therefore,the research on the structural model of spatial data of vegetation landscape is of great significance for the visualization and location of large-scale vegetation landscape.This paper reviews various common spatial data organization models and concludes that cannot meet the needs of visualization and location services of vegetation landscapes at large scales.On this basis,according to the principle of layout of vegetation landscape,the author concluded that the vegetation landscape has the characteristics of hierarchy,structure,integrity,tense and so on,and proposes a structured spatial data organization model.This model based on the vector data and object-relation,and abstracts the single vegetation,street tree landscape,and patchy landscape in the spatial data of vegetation landscape into basic elements such as points,lines,and planes,and builds structured organization.The main contents are as follows:1.Point associated.Different types of vegetation exist in the same landscape independently and as a whole.Vegetation of the same type is distributed in different areas.The establishment of connection can show the distribution of the plant cover.2.Points and linear associated.In this structure,vegetation is individual and belongs to the linear street tree structure.3.Points associated with polygon elements,and individual vegetation is an integral part of planar elements.4.The "point,line,surface" hybrid structure.It is reflects the level and integrity of the vegetation.In the hybrid structure,in order to not affect the display effect,the article creatively increases the probe" point,which 1s used as a virtual point,uniform Dispersed in the boundary and interior of the mixed planar structure,the probe appears in the position buffer and the overall landscape of the area is displayed.5.Vegetation multi-scale expression.Vegetation landscape data 1s more complex and diversified,in the visualization of the necessary mapping synthesis,a small scale shows the macro-vegetation distribution and key landscapes,a comprehensive display of large-scale structural landscape.This paper constructs a data organization model with a structured idea,optimizes the visualization effect of vegetation landscape,and applies it in the vegetation landscape data intelligent push mobile phone APP to provide a highly efficient organization and expression method for complex spatial data.