Design Of Land-use Dynamic Change Description By Map Language

With the in-depth study of land use/land cover change and advances in science and technology,land use change research has made great strides in data acquisition and organization of data storage structures.The main research techniques and methods of land-use change research still rely on remote sensing images,and the remote sensing data are stored and interpreted by GIS technology,and the vector data is modified according to GPS sampling.By drawing a map of land use status and comparing the data of land use data at different times,an analysis model is constructed to predict land use change trends.On the other hand,the expression of land-use change mainly expresses changes in the data,and there is no unified map semantics standard to express land-use changes in full coverage.Under the above background,it is necessary to design a semantic standard of Land-use change description map that conforms to the existing Land-use classification standards,and ensure the standardization of map semantic design based on guaranteeing the expression of land use change information.By studying the current land use classification and land use change expressions,this paper proposes a design standard that uses map semantic information to express land use change semantics.This article mainly completed the following research work:(1)Based on the existing land-use change expressions and the existing land-use classification criteria,analyze the change information of land-use change,and design express the land-use change from the macroscopic and microscopic perspectives.Macroscopically,according to the statistical data of land-use change,construct the factor transfer matrix to perform the overall statistical expression;microscopically,according to the full-vector symbol theory,construct the land use change description symbol,and use the change description symbol to carry out the element level of land use change.On the local expression.(2)Construct the design flow of the Land-use change description symbol,design the Land-use change description symbol,use the Land-use change data to perform the symbol rendering test on the completed change description symbol,improve the design flow through the test result,and complete the Land-use dynamic change description symbol flow design and change description symbol design..(3)Using Microsoft SQL Server database tools to design the semantic storage of the map,based on database constraints,the use of land-use change elements,using C# programming semantics and ArcEngine development components to design the Landuse dynamic change map semantics rendering methods,and build map evaluation indicators on the rendering results evaluation.