|Title:||應用土壤地景模式繪製結核與灰斑深度土壤類別圖||Other Titles:||Mapping Soil Classof Depth to Concretions and Mottles Using a Soil-Landscape Model||Authors:||鄭智馨
|Keywords:||土壤地景模式;地理資訊系統;區別分析;土壤類別圖;土壤類別機率圖;最大機率圖;Soil-landscape model;Geographic information system;Discriminant analysis;Soil class map;Soil class probability map;Maximum probability map||Issue Date:||Oct-2000||Publisher:||台灣農業化學會與台灣食品科學技術學會||Journal Volume:||38||Journal Issue:||5||Start page/Pages:||402-411||Source:||臺灣農業化學與食品科學||Abstract:||
Conventional soil maps are made by trained soil surveyors based on observations gathered along transects determined from aerial photos and topographic and geologic maps. The relationships between the soil properties and landscapes are seldom studied in conventional soil surveys. This study used a soil-landseape model developed through multivariate discriminate analysis to integrate the spatial analysis of a geographic information system (GIS) and soil properties, and to establish a new technique for producing soil class maps, soil class probability maps and maximum probability maps. Databases for the depth to Fe concretions, Mn concretions, and grey mottles of the soils as well as the soil drainage class were used in this study. The site was located in the Nankang district, Taoyuan, northern Taiwan. Results showed that the frequency of high maximum probability was higher for soils derived from gravel or sand parent material than for soil derived from red earth material. The frequency of high maximum probability for predicting the depth of Fe and Mn concretions was also higher than that for gray mottles. Application of the soil-landscape model delineates not only the soil class map but also the soil class probability map and maximum probability map. The model could also be used to evaluate the quality of soil maps, to explain the uncertain areas in such maps, and to easily and quickly update them. The raster type of geographic information data created in this study can also be shared with researchers involved in other GIS applications in the natural sciences.
|Appears in Collections:||農業化學組|
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