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通过对抚河历史洪水位流量关系及大断面等水文情势分析 ,发现水文情势变化与水土流失有着较紧密的联系。水文情势变化主要表现在 (1 )在相同流量状况下 ,水拉抬高 ;(2 )洪峰时间滞后或提前。而水土流失造成河道泥沙淤积 ,河床抬高 ,是引起水文情势变化的主要原因之一。资料分析表明李家渡水文站测流断面河床自 1 982年至今 ,最大淤积达 1 m以上 ,断面平均淤积在 0 .8m,临川市以上的河床已抬高 2～ 3m,最高的达 4m之多。可见水土流失是导致洪水产生的重要原因之一
Through the analysis of the relationship between historical flood level and the hydrological situation in the Fuhe River, it is found that there is a close relationship between the change of hydrological conditions and soil erosion. Hydrological changes are mainly manifested in (1) under the same flow conditions, water lift; (2) peak time lag or advance. The erosion and sedimentation caused by soil and water loss and river bed elevation are one of the main causes of hydrological changes. The data analysis shows that the maximum bed volume of the riverbed at the Lijiadu Hydrological Station has been over 1 m since its establishment in 1982 and the average silt in the section has been 0.8m. The riverbed above Linchuan has been raised 2 ~ 3m and the highest up to 4m . Can be seen that soil erosion is one of the important causes of floods