地表迳流是自然界水循环的最重要的部分,也是水文地理上的一个基本问题。为发挥水的最大效能而了解各地地表迳流并研究共变化规律,无疑是规划工作的重要基础。在我国大规模地进行社会主义建设的今天,地表迳流的研究和了解是很重要的。

1. Some major problems of the surface flow of China The calulation of the hydrographical records over 200 stations makes it possible to prepare two maps, viz.,that of the annual discharge (in m³/sec) of the different rivers showing the gradual increase toward dowmstream and that of the relative discharge (in litre/sec/km²).