Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/13734
標題: 地理資訊系統應用於集水區水文特性分析
Using Geographical Information System to Analyse the Hydrologic Character of Watershed
作者: 李宏珠
Lee, Hon-chu
關鍵字: GIS;地理資訊系統;watershed;physiographic factor;集水區;地文因子
出版社: 土木工程研究所
摘要: 
本研究主要係以複迴歸方法配合地理資訊系統之技術求取集水區諸地文因
子,再推求集水區尖峰流量與流域地文因子之間關係式。地文因子關係著
河流由上游往下游至河口時動力現象,對於逕流發生及流量歷線分佈有極
大影響,但以往受限於人工求取地文資料的不便,今以地理資訊系統求取
集水區地文因子,證實其為一快速可行之工具。本研究求出台灣省中部地
區及南部地區各集水區地文因子,除依此以複迴歸方法推求集水區各頻率
年尖峰流量外,並由地文因子更可充份瞭解集水區內水文現象,以形狀而
言,南部地區集水區形狀以狹長居多;而中部地區集水區多略似方圓,並
由中部地區及南部地區複迴歸相關係數得知,即使集水區面積甚為廣大,
尖峰流量受地文因子影響仍是很明顯,相關係數亦反應出水文均一性問題

This study first uses geographical information systems
technologies to calculate watershed phy- siographical factors
,and then uses multiple regression analysis to find the
design runoff flowrate for different return periods﹒Usually,
the physiographic factors basically respond dyn- amic
characteristics of stream flow systems wit- hin watersheds﹒
In addition , they also play important roles on deter-mining
general shape of runoff hydrographs at watershed outlet﹒
Because the traditional method in calculating physiogra- phic
factors are somewhat considered to be both time-consuming and
costly ,the GIS-basd method is thus introduced herewith and
has been proved to be able to estimate all that factors not
only fast but accurately﹒Also,the regression result show
that the watershed peak runoff rates are highly related with
these physiographic factors﹒ On the other hand ,these
factors also specify the general shape of watersheds in
Central and Southern Taiwan,which could be quite useful in
understanding watershed characteristics﹒Finally,the
regression results of this study also imply the 〝
hydrologic homogeneity〞 of the wat- ersheds in Central and
Southern Taiwan areas﹒
URI: http://hdl.handle.net/11455/13734
Appears in Collections:土木工程學系所

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