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Research on the GIS-based Fertility Evaluation System of the Farmland in Nong’an County

Author: ZhuJianFei
Tutor: OuYangDanTong;ZhangYongGang
School: Jilin University
Course: Computer technology
Keywords: GIS ARCGIS ARCVIEW Evaluation of Farmland
CLC: TP311.52
Type: Master's thesis
Year: 2008
Downloads: 197
Quote: 1
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Evaluation of Farmland System is the main content of the paper . In the course of the study , according to actual needs , use in Visual Basic , a small drawing program was developed to open the JPG format basemaps , then digitized points , lines , surfaces and set attributes , the digitization process can picture carried enlarge , shrink operations such . Chinese interface is both simple and convenient , the good then digitized maps into the evaluation system to be evaluated . The Nong'an arable land resource status quo , first collected the maps , information and sampling laboratory data , and the establishment of a repository of cultivated land resources based on 3S technology ; then use the land use map , the administrative zoning map and soil type map superimposed formation evaluation unit , selected the 19 elements of the five aspects of the profile and physical and chemical properties , site conditions , weather factors , soil nutrients , soil management as evaluation factors , and the weight of the Delphi method to determine the evaluation factors ; focusing on the use of fuzzy mathematical model Analytical Hierarchy Process (AHP) to calculate the the Nong'an of Farmland Composite Index ; Finally , through statistical analysis of the results of the evaluation , concluded .

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