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頁籤選單縮合
題 名 | 地理統計結合地理資訊系統應用於土壤污染防治=Applications of Geostatistics and Geographic Information System for Soil Pollution Protection |
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作 者 | 張尊國; 徐貴新; 林裕彬; | 書刊名 | 農業工程學報 |
卷 期 | 47:4 2001.12[民90.12] |
頁 次 | 頁20-28 |
分類號 | 434.223 |
關鍵詞 | 土壤; 重金屬; 地理統計; 克利金; 地理資訊系統; Soil; Heavy metals; Geostatistics; Kriging; GIS; |
語 文 | 中文(Chinese) |
中文摘要 | 地理資訊系統可以快速、精確、綜合地對複雜的地理特徵進行空間定位和過程動態分析,土壤污染防治關注地表及地下土壤中污染質之成分與來源分布,因此二者密切相關,再者地理統計為分析空間變異與關聯詮釋之工具。本文利用環保署臺灣土壤重金屬含量之調查資料,汞、砷、鎘含量數據,應用上述工具以最小平方法模擬建立之指數變異模式推估克利金網格值涵蓋全區,並以此建立土壤砷、汞、鎘之濃度分佈圖,以改進傳統網格之表達方式,使得調查結果更能彰顯。這些分佈圖將有助於研判土壤中重金屬含量空間分佈與土壤母質之相互關係,亦有助於對污染來源之追蹤研究。應用此法,以視覺展示濃度分布與工廠排放源位置,可迅速瞭解其污染之範圍及探討可能之污染來源,可作為土壤污染防治管理重要之參考依據。 |
英文摘要 | GIS provides representations of the spatial features of the Earth, while soil pollution protection is concerned with the soil and its pollutant constituents over the land surface and in the subsurface environment. There is obviously a close connection between the two subjects. Meanwhile, geostatistics provides a set of statistical tools for analyzing spatial variability and spatial interpolation. Examples of Applications of Geostatistics and Geographic Information System for Soil Pollution Protection were illustrated and discussed in this paper. Maps illustrating the heavy metals Hg As and Cd content of soils of Taiwan was developed using geostatistics and geographic information systems. Data were collected from Environmental Protection Administration's study targeting agricultural soils in 1980s. An exponential variogram model was fitted using least squares and used to krige a grid covering study area. The map will be useful in future research to determine the relationship between heavy metals ad parent soil material and industrial emission, and in considering the consequences of land disposal of sludge. The method has ability to support and foster scientific visualization and mapping. By doing so, decision maker can acquire an intuitive understanding of the effects of local information simply from visual inspection. |
本系統中英文摘要資訊取自各篇刊載內容。