金沙江泥沙输移特性及人类活动影响分析

Analysis on transport characteristics and influence of human activities in the Jinsha River

长江三峡水库入库站寸滩的泥沙主要来源于长江上游金沙江和嘉陵江。其多年平均悬移质输沙量有５２７％来自金沙江。这对该江的开发和三峡水利枢纽工程关系重大，经分析该江悬移质泥沙输移特性得出：近十年来悬移质输沙量增加显著，与该地区人类活动影响有密切关系。

The sediment at the Cuntan hydrological station, the inflow station of the Three Gorges reservoir on the Yangtze River,mainly comes from distributaries, the Jinsha River and the Jialing River. Of which, 52 7% of the long term annual suspended load comes from the Jinsha River, which significantly affects the exploitation of this river and the Three Gorges Project. By analyzing the characteristics of the suspended load, the following conclusion has been drawn: the suspended load increases obviously in recent decade and has close relation with the influence of the human activities in this area. \ \