查詢結果分析
來源資料
頁籤選單縮合
| 題 名 | 多變量分析在流域特性研究上之應用--以臺灣東部流域為例=Application of the Multivariate Analysis on the Research of Characteristics of Drainage Basins--Case of East Taiwan |
|---|---|
| 作 者 | 潘文富; | 書刊名 | 花蓮師院學報 |
| 卷 期 | 7 1997.06[民86.06] |
| 頁 次 | 頁395-426 |
| 分類號 | 351.7 |
| 關鍵詞 | 流域特性; 因子分析; 群落分析; 判別分析; 流域均質區; Characteristics of drainage basin; Factor analysis; Cluster analysis; Discriminant analysis; Hydrologic homogeneous region; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 區域分析為未量測地區水資源分析之重要方法,而區域分析首需藉助於均質性區域 之劃分。地理學從事地表現象之空間分布與區域特性之研究,亦以均質性區域之劃分為首要 工作。就水文地埋學而言,流域均質性區域之劃分乃以流域特性為其基本指標。因此,本文 以臺灣東部流域為研究範圍,從中抽取40個流域為樣本,並選擇17項流域特性指標為變 數,以因子分析、群落分析及判別分析等多變量統計分析方法,分析流域特性之基本結構與 特徵,據以劃分流域均質區,以探討其空間差異與區域特性,並建立流域歸屬之判別函數, 俾供水文地理學區域研究之參考。研究結果顯示,17項流域特性指標可綜合成4個重要共 同因子,其總解釋量達84.24%。根據因子得點,可將本區劃分為4個流域均質區,其 與地理分布及流域特性皆相吻合。所建立之4群判別函數,均通過顯著差異性檢定,且其總 判中率高達95.00%,為本區未量測流域之流域均質區歸屬的良好判別準則。 |
| 英文摘要 | Regional analysis, a technique based on the identification of homogeneous regions, is significant in analyzing water resource in ungauged areas. Geography, which studies the spatial distribution of phenomena as well as the regional characteristics, also takes the identification of homogeneous regions as the primary task. To hydrological geography, the characteristics of watersheds is the basic index for the identification of homogeneous regions. Therefore, by taking the watersheds in East Taiwan as the studied area, this paper uses samples from 40 watersheds and selects 17 characteristic indicators of drainage basins as variables for multivariate analysis methods to analyze the fundamental structure, to identify the homogeneous regions and to establish the discriminant function of drainage basins. The outcome of the research reveals that the aforementioned 17 characteristic indicators of watersheds can be reduced into 4 important common factors, which can account for 84.24% of the common variance. There are 4 hydrologic homogeneous regions, which coincide with both the spatial distribution and the characteristics of watersheds. The discriminant function of 4 homogeneous regions has statistical significance, and the correct ratio of discrimination reaches 95.00%, which is a very reliable index for estimating the attributes of the ungauged areas. |
本系統中英文摘要資訊取自各篇刊載內容。