【摘要】 据地貌特征、地质资料、文献记载、考古资料等综合分析 ,确定了渭河西安段春秋战国、唐代的河道位置 ;分析了春秋以来河道北移的平均速率为 1 .74～ 2 .71 m / a,并具有加速趋势 ,以及东西部河道北移速率差异的原因 ;计算了咸阳 -梁村 2 2 km长的河段春秋后期以来 (2 3 0 0 a B.P.- 0 a B.P.)、春秋后期至唐 (2 3 0 0 a B.P.- 1 2 5 3 aB.P.)以及唐以来 (1 2 5 3 a B.P.- 0 a B.P.)河流侧蚀形成的年均土壤侵蚀量分别为 2 4 1 1 87,1 4 2 1 4 9,3 2 3 94 2 t更多还原

【Abstract】 Based on integrated analysis of landform characteristics,geological information,documents datum and archaeology information,the paper confirms the Xian reaches of Weihe Rivers location in different period of the Chunqiu & Zhanguo Dynasty,Tang Dynasty.Through analyzing, the paper points out that the average speed in the Chunqiu of Weihe River bed moving to north is 1.74~2.71 m/a, in the same time the paper considers that the speed have its particularities: on the one hand it have been changing faster; on the other hand it is different between east and west. The reasons which arouse the speed changing were analyzed.The amount of Weihe Rivers lateral erosion which from Xianyang to Majiawan(22 km) is calculated: since the end of Chunqiu Dynasty (2300 a B.P.-0 a B.P.) the amount is 241 187 t/a;since the end Chunqiu to Tang Dynasty(2300 a B.P.-1253 a B.P.) the amount is 142 149 t/a;since the Tang Dynasty (1253 a B.P.-0 a B.P.) the amount is 323 942 t/a.更多还原