Besides the natural process of sediment production the paper calculates the total process lines of sediment production and the corresponding natural process line of sediment production when the accelerated erosion is 30% and 44% of the total.

• 文中除给出自然产沙过程以外,还计算加速侵蚀占30%25和44%25两种情况下总产沙过程线和相应的自然产沙过程线。