優養化水質變遷模擬

Simulating the Change of Water Quality in an Eutrophicated Lake

賴美倫(Mei-Lun Lai)

指導教授 ： 陳鶴文

朝陽科技大學/理工學院/環境工程與管理系/碩士(2009年)

摘要

由於人類活動頻繁、經濟活動空間不斷往郊外或山坡地擴張，造成水源地上游農牧、工礦業廢水及家庭汙水大量流入河川及水庫，導致水庫優養化情形發生。為了有效的模擬優養化水體水質進行改善，故本研究採用生物復育方法，並藉由系統動態學具有處理動態、回饋且具時間延遲等問題，能提供整體、長期且較周延的解決方法，透過Vensim軟體進行模擬，探討不同的參數與情境模擬的結果變化。
由不同參數模擬結果發現，國外參數應用至國內研究其結果差異不顯著，故可將其引入國內水質模擬並以此成功建立本土化參數做為國內水資源模式參考方針。情境模擬結果發現，當模擬降雨量、溫度及營養鹽變化時，其模擬結果對於浮游生物量趨勢變化不顯著，顯示可能其參數設定對於模式模擬影響不彰顯，以致於模擬結果變化不明顯。故未來必須進一步了解復育劑量對於影響生態系統之關係做深入探討，以達到較佳模擬結果且提高模擬之完整性。

關鍵字

Vensim ； 優養化 ； 系統動態學

並列摘要

Eutrophication, which means excessive growth of phytoplankton, can affect ecological balance, reduce dissolved oxygen, increase turbidity, produce colouring of water, and lead to loss of biodiversity in a water body. The Liyu Lank is the study area, is considered to be highly eutrophic. In this project one system dynamic model were developed to analyse and model the process of eutrophication in the reservoir. Models were developed using a software called VENSIM. Environmental factors affecting eutrophication such as rainfall, temperature and nutrient inflow were reflected in the models.

The simulation result of rainfall, temperature and nutrient inflow parameters were not significant. And to establishment of national water resources model reference approach. In the future, we will have to understand the dosage. It''s will make a thorough of discussion relations and regarding the influence ecosystem of ecosystem, In the end it not only will achieve integrity of the good analogue result, but also the enhancement simulation

並列關鍵字

Vensim ； System Dynamic ； Eutrophication

參考文獻

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