頁籤選單縮合
題 名 | 臺灣地區河川水質之趨勢分析 |
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作 者 | 李漢鏗; 王金詮; | 書刊名 | 逢甲學報 |
卷 期 | 27 1994.11[民83.11] |
頁 次 | 頁127-144 |
分類號 | 445.22 |
關鍵詞 | 水質; 河川; 臺灣地區; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究主要目的是以線性迴歸及無母數Mann-Kendall法,探討臺灣地區河川水質 變化趨勢。藉河川水質機率分布特性,選擇適合之趨勢分析方法,並以流量調整濃度法提高 趨勢統計效果。 研究結果顯示(1)臺灣地區河川水質演變:西部河川污染有嚴重化趨勢,東部河川則減輕 。 (2)水質分布特性:DO 呈常態或近似常態分布,線性迴歸及 Mann-Kendall 法皆適合 分析水質趨勢。(3) RPI、SS、NH �陘� BOD 則屬非常態分布,適合以 Mann-Kendall 法 描述水質趨勢。(4)若水質濃度與流量間存在相關性,配合流量調整濃度法之趨勢分析, 可提昇統計之正確性。 |
英文摘要 | The objective of this study is to investigate the trends of water quality of rivers in Taiwan. Two analysis techniques including linear regression and Mann-Kendall method are employed. The major decision factor to choose optimal analysis method is the distribution characteristic of river-water quality. The flow-adjusted concentration (FAC) was used to improve the accuracy in trends analysis. Based on statistical tests, the following conclusions were obtained: 1. For the past 15 years, the river pollution index (RPI) increased in rivers of western Taiwan, and decreased in east. 2. Statistically, DO was found to be a normal or near-normal distribution. Therefore, both linear regression and Mann-Kendall method are suitable for trends analysis of DO. 3. RPI, BOD, SS, and NH �� were not normal distribution, and Mann-Kendall method is a better tool for trends analysis. 4. If the water-quality items were affected by river discharges, the FAC method could improve the trends analysis results. |
本系統中英文摘要資訊取自各篇刊載內容。