頁籤選單縮合
題名 | 蘭陽平原地下水之主要化學成分 |
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作者姓名(中文) | 江漢全; | 書刊名 | 農業工程學報 |
卷期 | 40:4 1994.12[民83.12] |
頁次 | 頁85-95 |
分類號 | 351.85 |
關鍵詞 | 地下水; 水質; 主要成分; 鹽分污染; Groundwater; Water quality; Principal component; Salinity contamination; |
語文 | 中文(Chinese) |
中文摘要 | Ca,Mg,Na,K,CO₃⁻,HCO₃⁻,Cl⁻,SO₄⁻等地下水中主要化學成分之含量及比例,可提供吾人對地下水水質是否適合供各類用水標的之需求及是否受鹽分污染之訊息。蘭陽平原地下水區為本省九個地下水資源分區之一,地下水含水層透水性良好,地下水位高,屬地下水豐富地區,本區地下水一向為飲用、灌溉、工業用水之主要來源。然而,近年來,養殖魚塭之大量擴展及工業之發展,已造成本區部分地區地下水位下降,並對地下水水質造成威脅。本研究於蘭陽平原設35口採樣井,平均每11.4 km²一口,於82年9月至83年5月止,進行兩次採樣及九次地下水位測量,地下水位資料顯示,位於礁溪、壯圍、蘇澳等三個鄉鎮沿海地區的7口井,平均地下水位在海平面之下,尤其蘇澳沿海地區三年來之地下水位呈現迅速下降之情形。本區pH值偏微鹼性,由Piper水質結構圖及Collin水質柱狀圖分析,補注區至流出區鹽分濃度有漸次增加的趨勢,水質由以Ca(HCO₃)₂為主,漸次轉為以為主,再轉為Na₂SO₄以及NaCl為主之水質型態。 本文並以電導度、氯鹽、鈉吸著率、氯鹽/碳酸鹽類比值等參數,討論蘭陽平原地下水水質之狀況。 |
英文摘要 | The contents and ratios of principal chemical constituents, such as Ca, Mg, Na, K, CO₃⁻, HCO₃⁻ , Cl⁻, SO₄⁻ in groundwater offer the information not only for understanding availability of the groundwater but for evaluating the contamination of salinity. Lan-Yang Plain is one of nine important groundwater supply areas in Taiwan. In this area, groundwater is the main source for water consumptions of drinking, irrigation and industry. In recent years, the exploitation of aquacultural ponds and development of industry caused some problems on groundwater resources. These problems include drop of groundwater level and contamination of groundwater. Thirty-five wells were chosen for sampling groundwater twice and for measuring water level nine times from September, 1993 to May, 1994. The results show that 7 wells with water levels lower than sea were found nearby the coastal area of Chiao-Hai、Chuang-Wei and Su-Ao counties. According to Piper's Triangle and Collin's bar graph, the tendency of salinity content in groundwater was increased from recharge area to discharge area. The water quality type was changed from Ca(HCO₃)₂ type to NaHCO₃ type, then to Na₂SO₄ and NaCI types. The values of E.C., Cl⁻, S.A.R.(Sodium Absorption Ratio)and [Cl]/[CO+HCO₃] ratio were selected to evaluate the status of groundwater quality of Lan-Yang Plain in this paper. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。