Environmental and Hydrological Implications Revealed by Hydrogen and Oxygen Isotope Compositions for the Watershed of the Wuchi system in the Nantou Area
|Keywords:||氫;氧同位素;水文環境;埔里盆地;貓羅溪流域;集水區;南投;Hydrogen and oxygen isotopes;Hydrological environment;Puli basin;Maolouchi river basin;Watershed;Nantou||Issue Date:||Aug-2002||Publisher:||台北：台灣農業化學會與台灣食品科學技術學會||Journal Volume:||40||Journal Issue:||4||Start page/Pages:||238-253||Source:||台灣農業化學與食品科學||Abstract:||
Seasonal samples of rain, surface, and gorund- waters were collected and analyzed to determine hydrogen and oxygen isotope compositions in order to better define their isotope characteristics and to differentiate groundwater origin and recharge in the watersheds of the Wuchi system, Nantou. The results showed that maritime airmass is the dominate source of local precipitation. The isotope signals of summer precipitation are relatively depleted compared with those of winter, primarily due to the effect of the precipitation amount. Isotope evidence also indicated the surface waters mainly orginate during rainy seasons. A statistical comparison of isotope characteristics between surface and ground-waters showed that 90% of the groundwater in the Puli Basin is derived from the south side of its watershed. As for the Maolouchi river basin, it swa estimated that water from the Choshuichi contribute to the groundwater system with about half the total amount deriving from the eastern side of its watershed.
|Appears in Collections:||農業化學組|
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