Title :
Integration and Application of Geographic Information System (GIS) and Spatial Analysis Model--A Case Study of Simulation for Soil Environment
Author :
Zhang, Junhua ; Li, Guodong
Author_Institution :
Coll. of Environ. Sci., Anhui Normal Univ., Wuhu, China
Abstract :
The database of geographic information system (GIS) is built based on space positions data of Global Positioning System (GPS) and experimental data of soil organic carbon in Hexi corridor. Then, GIS data are analyzed, including testing data distribution, the trend analysis and voronoi map to identify possible outlier. According to the result of data set analysis, appropriate model is chosen to simulate and predict the soil organic carbon spatial distribution. The cross validation method is used to verify the simulation accuracy and validity of model. Root mean squared error (RAISE) and mean error (ME) are regarded as the evaluation standard. Kriging model is selected, and simulation map is output by optimal parameters. Through model verification, simulation accuracy is high, RAISE and ME of the model is equal to 0.552 and 0.089 respectively. The results show construction and implementation of spatial analysis model based on GIS is feasible and precise.
Keywords :
Global Positioning System; computational geometry; geographic information systems; mean square error methods; soil; statistical analysis; GIS; GPS; Global Positioning System; Hexi corridor; Kriging model; ME; RMSE; cross validation method; data set analysis; geographic information system database; mean error; model verification; outlier; root mean squared error; soil environment; soil organic carbon spatial distribution; spatial analysis model; trend analysis; voronoi map; Analytical models; Data analysis; Geographic Information Systems; Global Positioning System; Information analysis; Mathematical model; Power system modeling; Predictive models; Soil; Spatial databases; GIS; Simulation; Spatial analysis model; soil environment;
Conference_Titel :
Computational Intelligence for Modelling Control & Automation, 2008 International Conference on
Conference_Location :
Vienna
Print_ISBN :
978-0-7695-3514-2
DOI :
10.1109/CIMCA.2008.106