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題名 | 以判別分析方法歸類判定大鵬灣海域底質受鄰近河川污染之研究=Discriminant Analysis to Recognize Source of Pollution of Sediment Properties from Neighboring Rivers in Tapeng Lagoon |
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作者姓名(中文) | 廖少威; 賴文亮; 陳振正; 許嘉裕; 邱俊彥; | 書刊名 | 海洋工程學刊 |
卷期 | 7:2 2007.12[民96.12] |
頁次 | 頁85-100 |
分類號 | 445.259 |
關鍵詞 | 判別分析; 大鵬灣潟湖; 底質污染; 重金屬; Canonical discriminant analysis; Tapeng lagoon; Sediment pollution; Heavy metal; |
語文 | 中文(Chinese) |
中文摘要 | 本研究以大鵬灣海域爲主體,期藉由數理統計方法,以確定潟湖底質受鄰近河川(高屏溪、東港溪及林邊溪)之污染影響。經由典型判別分析的結果,在建立的二個線性判別函數裏,所含的判別變數大部份均有顯著性的貢獻。此兩判別函數以因子結構係數來說明主要影響參數爲孔隙率、鎘、鉻、鋁、鉛,可說明主要是「重金屬影響因子」,判別能力分別是82.6%、17.4%。大鵬灣在污染自淨能力上因只有一囊袋開口與外海流通,灣內外水體交換能力嚴重不足,平均滯留時間約爲7天,可能受當地生物地質化學反應的影響深遠。故從底質特性的角度並沒辦法統計歸類出大鵬灣海域底質主要係受何河溪之影響。然此判別分析結果對於大鵬灣潟湖及鄰近三河川在水資源之經營管理上,將可提供莫大助益。 |
英文摘要 | This work investigated sediment samples collected from the Tapeng Lagoon and three neighboring rivers (the Kaoping River, Tungkang River and Lingbeng River) in southwestern Taiwan. Canonical discriminant analysis (CDA) was applied in order to distinguish the sediment-quality parameters from neighboring rivers, and to recognize similarities of sediment properties between lagoon and neighboring rivers. Two constructed discriminant functions showed a marked contribution to most of the discriminant variables, and the recognition capacities of these two discriminant functions were 82.6 and 17.4%, respectively. The annual mean of water exchange time of about seven days, insufficiently eliminates pollutants and has significantly influences the carbon and nutrient biogeochemical processes and budgets in the semi-enclosed ecosystem. The sediment properties between lagoon and neighboring rivers do not show obvious similarities. The results will be helpful in developing a methodology for use by the government in refining its management programs. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。