Study On Land Consolidation Project Design By RS & GIS

As the development of computer technology and science, Geographic Information system, with its powerful spatial analysis functions and the management of geographic data has been widely used in the field of resources and environmental management. Chinese government has started the land development and consolidation project since the year of 2001, considering the fundamental realities of land resources in China and the sustainable land use.The advance research of GIS and land consolidation is developing, but it's necessary to carry on the applied research of GIS technology in the land consolidation project design. This paper selects Xiongji town in city of Zaoyang as the studying example region, tries to apply GIS technology in land consolidation design project, establishes the area's DEM model and the three dimensional virtual landscape of land-use in the research area. The main results of the paper are as follows.Firstly, on the basis of the DEM construction of the research area, it selects the types of DEM data source, finds the methods of data processing and DEM construction. After testing its accuracy, that ensures the accuracy of the established project area DEM to meet the requirements. In addition, choosing high-resolution remote sensing image as texture paper, taking a series of processing methods, DOM will be superimposed with DEM and the three-dimensional surface landscape construction of land-use will be completed.Secondly, through extracting relevant information from the established status DEM, planning and design have been conducted. The land consolidation project has been separated into items to design. From the land leveling, farmland water conservancy, roads and other projects, the paper discusses how to achieve each of the three-dimensional projects of landscape design. Frequently the two types of DEM are converted into mesh model. Through the subtraction of DEM, we can calculate the earthwork of the field to be leveled, in accordance with the area-configuration model to complete the deployment.Using the spatial analysis functions of GIS, the paper improves the methods and design of GIS technology in land consolidation project design to some extent, also the technical programmed on planning and design of a land consolidation. It considers the project's feasibility before the establishment of the project from a direct perspective through the establishment of three-dimensional planning outcome, also avoids the reciprocating amendment, and uses the function of GIS spatial data management to create a database on land consolidation project's planning and design in specific area.