Through the pretreatment in prophase and the catchmentbasin chosen, the over-segmentation phenomena existing in traditional watershed algorithm can be restrained.
通过前期的预处理以及汇水盆地的选取，有效的抑制传统算法中的过分割现象。
2
They are hydrologically of catchment, basin character, with different ways of recharge and drainage, and occupying a special position in geomorphologic structure of the drainage area.
There are many factors that affect the low flow in a karst basin, such as climate, catchment area, lithology, soil, landform and so on, most of which are uncertain.