- 期刊
濁度對水庫優養化指標辨識度之影響
Effect of Water Turbidity on the Eutrophication Index for Reservoir Water Quality
摘要
近年來台灣地區水庫隨著經濟發展、農業活動頻繁及集水區地質條件不良崩塌地多等影響，對水庫水質造成嚴重的負荷。因此，在水庫水質日益惡化下，判定水庫水質的指標尤為重要，而台灣普遍使用的是卡爾森優養指標，卡爾森指標之參數為透明度、葉綠素a、總磷所組成。然而卡爾森指標在高濁度下，會使透明度及總磷參數產生偏差，而使卡爾森指標產生高估的情形，而影響卡爾森指標的辨識度。本研究選用翡翠水庫、石門水庫以及曾文水庫為研究區域，探討卡爾森優養指標辨識 度的問題。由分析結果可以證實，在高濁度時，卡爾森優養指標確實會受到干擾，造成指標辨識力的下降，石門水庫高濁度現象較為顯著，卡爾森優養指標辨識力下降的情形較為顯著。
並列摘要
Economic development impacts environment. Increased pollution worsens reservoir water quality. It is significant to apply eutrophication index to evaluate reservoir water quality. Carlson's trophic state index (CTSI), calculated by chlorophyll (Chl), phosphorus (P), and Secchi depth (SD), is a popular eutrophication index. When water turbidity is high, it may highly raise the value of CTSI and influence the recognition of CTSI. This study selects Feitsui, Shihmen, and Tsengwen reservoirs for case area. The objective is to discuss the influence of environmental factor, such as turbidity, on the recognition of CTSI. The results demonstrate that the recognition of CTSI is certainly influenced by water turbidity. When water turbidity is high, it decreases the recognition of CTSI. Because the water turbidity is higher in the Shihmen reservoir than in the other two reservoirs, this situation in the Shihmen reservoir is more noticeable.