河流是许多天然风化产物和人类生产、生活活动产物从陆地进入海洋的主要通道。由于地理条件、人口分布等的差异,各河流所携带入海的物质种类和数量之间必然存在很大差別。所以,将测量一条河流所运载的物质通量的方法应用于其他河流或从几条河流以估计全球的入海物质通量时,必须考虑到达些条件的变化。为了计算物质从河流,经过河口,进入 Rivers are a natural source of many natural weathering products and human activities that produce the main passage of land into the ocean. Due to differences in geographical conditions and population distribution, there are bound to be significant differences between the types and quantities of substances carried into the sea by rivers. Therefore, changes in conditions must be taken into account when applying the method of measuring the flux of a substance carried by a river to other rivers or from several rivers in order to estimate global fluxes into the sea. In order to calculate the material from the river, enter through the estuary