Relief Analysis Of Liaoning Based On SRTM3

Terrain type determines the basic direction of land utilization and economic andsocial development. Therefore, learn analyze and evaluate certain regional terraincharacteristics, understand the classification criteria of all kinds of terrain, measure andcalculate the acreage，the constitution and the spatial distribution characteristics of allkinds of terrain types have very important and realistic significance for formulatingoverall strategy of regional development and corresponding development andconstruction planning.But for a long time, Liaoning Province has been using "experience" terrain typesto constitute the basic data. There are certain problemsin the classification criteria of terrain and the accuracy of terrain data and the datasource are not in detail.Therefore, to meet the province’s economic and social development needs, underthe premise of making necessary terrain classification standards, based on the basicdata of Certain scale，using geographic information system (GIS) technology which isalready mature， objectively analyzing the terrain of the whole province，understanding the quantity proportion and spatial distribution of various terrain types,various terrain type boundary, topographical landmarks and watershed boundary line，have very important significance for rational exploitation of the province’s land spaceresources，various types of zoning adjustment changes, the exact expression of terrainin various publications and government documents and establishing various regionaldevelopment planning.According to the requirement for realistic and basic information of terrain, thispaper strives to make necessary research in the following aspects: first, combined withthe existing reference standards, propose terrain classification criteria which issuitable in the whole province; second, according to the standard, useing the GIStechnology, public data in250000domestic published topographic maps and SRTM3(Shuttle Radar Topography Mission) and through classic terrain analysis tools toextract key terrain boundary； third, count the composition ratio of Various terrain aswell as the composition of every city; fourth, according to various mapping needs,proposed DEM basic drawing standards of Liaoning.