confluence basin

The paper gets the annual variable law of net amount and the confluence character in river basin through the comprehensive analysis of hydrological data over the years in each hydrological station of Chaoyang river main stream and tributary.

本文通过朝阳河干流及支流上各站历年水文资料的综合分析，得出流域产汇流特性及径流量的年际变化规律，为水库管理和调度提供了科学依据。

Based on some river basin characteristics collected from DEM ( Digital Elevation Model), such as the confluence network, length and gradient of flow route, and slope, a loose and coupled distributed hydrological model was developed for the Sanmenxia-Xiaolangdi section.

依据从DEM中提取的汇流网、水流路径长度和坡度等流域特征，建立了适合于黄河三门峡&小浪底区间水文过程的松散耦合型分布式水文模型。

The process that runoff and sediment material collect into the channel and migrate through the channel network is important in simulating the hydrological and erosion areas. And river confluence relations in the basin is the base of hydrological and erosion models.

径流和泥沙物质向沟道的汇集和通过沟道网络系统的运移过程，是水文和侵蚀模拟的重要环节，而流域之间汇流关系的建立，则是流域水文和侵蚀模型的基础。