(一)影响坡面冲刷的因素很多,而且还大部分都是未知数,因此,把所有的复杂因素综合起来去研究,在目前来说,还存在着一定的困难,只有采取个别因素分别研究最后再加以综合的方法。目前在坡面冲刷上主要存在着坡度与径流量和冲刷量的关系问题,也就是在其他因素相同的条件下,坡度由缓变陡,径流量或冲刷量是(1)由少变多呢?(2)由多变少呢?(3)还是基本上没有变化呢?这个问题直到现在还没有得到比较完满的解答。 (A) There are many factors affecting slope erosion, but most of them are unknown, therefore, all the complex factors to study together, at present, there are still some difficulties, only to take individual factors were the last Combined with a comprehensive approach. At present, there are mainly the relationship between slope and runoff and erosion amount on slope erosion. That is, under the same conditions of other factors, the gradient of gradient is steep, and the runoff or erosion amount is (1) from less to more (2) From less to less? (3) Still basically no change? This question has not yet been more complete answer.