本研究利用可視化流場之分析以影像擷取處理懸浮質濃度之方法，找出在逆坡輸沙中懸浮質濃度分布與流量、坡度、隨顆粒雷諾數間之關係，並將懸浮質濃度利用迴歸方式換算為輸沙量與李及林（1998, 1999）之輸沙量作比較。研究發現輸沙量皆隨流量的增加而增加，而懸浮質換算之輸沙量相較於實驗量測之輸沙量為小頗為合理，而輸沙量亦隨坡度增加而減少，隨顆粒雷諾數增加而增加。 By using computerized image processing method, this study analysis thechanges of the sediment concentration along an adverse sloping sandychannel in order to find the relations with particle Reynolds number,slope and the flow discharge. The comparison among Lee & Lin (1998,1999) with this study have been made. This research has found that asthe flow discharge increases the sediment transport increases. Theresults computed by the regressional curves are more reasonable thanLee & Lin (1999). Those results also show that as the slope increasesthe sediment transports decreases. As the particle Reynolds numberincreases, the sediment transports also increase.
