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來源資料
頁籤選單縮合
題名 | 雲林田洋地區土壤水分滲漏之估計 |
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作者 | 張文亮; | 書刊名 | 農業工程學報 |
卷期 | 40:2 1994.06[民83.06] |
頁次 | 頁44-47+ |
分類號 | 434.222 |
關鍵詞 | 滲漏; 導水係數; Percolation; Hydraulic conductivity; |
語文 | 中文(Chinese) |
中文摘要 | 根據達西公式,推導出土壤水分滲漏速率是滲漏時間、土壤深度與導水係數的函數。以雲林田洋地區為例,根據理論推導,在地面灌溉停止後二個月,乾燥的表土水分的傳輸速率祇有19.5%的飽和導水係數,但是6公尺深的地下水有96.7% 的飽和導水係數的速率。已知該地區的地面水受豬糞尿污染,經過滲漏作用流至地下含水層,可能是導致該地區地下水質惡化的原因。 |
英文摘要 | The percolation rate, which is derived from the Darcy's equation, is a function of time, soil depth and hydraulic conductivity. In the case of Tian-yang in Yun-lin area, after two months of the last date of surface irrigation, percolation rate remained only 19.5% of saturated hydraulic conductivity at the soil surface, but 96.7% of saturated hydraulic conductivity at the 6m soil depth, which is the depth of groundwater. Since irrigation water is polluted by swine waste, percolation is the main cause of groundwater pollution in that area. |
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