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Research on Map Generalization of1:0000-1-1:50000Land-use Current Map

Author: ZhangZhao
Tutor: LiDaJun
School:
Course: Cartography and Geographic Information Systems
Keywords: Land-use current map Generalization the rules of generalization GISsoftwares
CLC: P285.23
Type: Master's thesis
Year: 2013
Downloads: 110
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Abstract


Land-use current map is a thematic map,which shows the distribution of a regionalland use types,land area and land use status structure.Objective natural and geographicalconditions and human socio-economic activities together determine the results of thecurrent land use.On the contrary,land-use current map can be provided the overallplanning basis for the leadership.However,different levels of decision-making managersneed different scales of land-use current map.Generally,the more high-leveldecision-making, the smaller the dimensions of the required.So it’s necessary to performgeneralization on large-scale land-use current map.In term of map generalization bothfrom1:10000to1:50000,as the transition from large-scale map to small-scale map,andthe basis of subsequent small-scale land-use current map.This level of land-use currentmap generalization will directly or indirectly affect the accuracy of the subsequentsmall-scale data.However, in the face of complex terrain areas,generalization willincrease the difficulty,this may result in slow, poor accuracy,more difficult to reflect thecurrent of the land-use current map.This study was carried out under those requests,in combination with a project ofthe authors participated,according to the relevant technical norms and nationalstandards,using several GIS software,fulfil1:10000to1:50000land-use current mapgeneralization to Ganzhou County. The following works have been done in this paper:1) Introduction to the theory of land-use current map generalization,including theconcept of maps,the main content of the land-use current data generalization,dataclassification and the rules of the land use current map generalization and so on.2) The project of Gan County land-use current map generalization is on thehardware and software environment,and elements of the relevant standards andtechnical requirements was introduced.3) Ganzhou County, for example,specific embodiment of the1:1-1:5land use mapgeneralization,and analysis the characteristics of Gan County.The process of land-usecurrent map generalization,using a set of practical land-use current map generalizationapproach,and combined with a variety of software.Technical Reference can be providefor the future peers use GIS softwares for land-use current map generalization.4) Explores the problems encountered in the process of1:1-1:5land-use current map generalization.With examples, gives a solution through the graph and textcombination,control the difference of the before and after map generalization,to ensurethat the accuracy of the data.This paper aims to improve the efficiency and accuracy of land-use current mapgeneralization.In order to improve the quality and speed of land-use current mapgeneralization.Provide some technical guidance and reference to the same or similarresearch in the future.

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CLC: > Astronomy,Earth Sciences > Surveying and Mapping > Cartography ( Cartology ) > Specialized map production > Socio-economic map compilation > Figure preparation of land use ( planning )
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