珠江由西江、北江、东江及珠江三角洲暨入注三角洲诸河等四个水系所组成。主流西江,自上而下分成南盘江、红水河、黔江、浔江、西江等许多河段,但源于何处?上、中、下游又该如何划分?至今尚无定论。一条发育完整的河流,一般都可划分为河源、上游、中游、下游及河口五个段落。其中河源、河口往往分别包括在上游和下游段内。现将珠江各水系的河段划分初步意见,阐述如下: 一、珠源 The Pearl River from the Xijiang River, the North River, the East River and the Pearl River delta into the deltas and other four river systems. The mainstream Xijiang River is divided into many sections of rivers, including the Nanpanjiang River, the Red River, the Qianjiang River, the Qijiang River and the Xijiang River, from top to bottom. However, where are the origins? How are the upstream, middle and downstream divided? It is still inconclusive. A well-developed river can generally be divided into Heyuan, the upper reaches, the middle reaches, the lower reaches and the estuary five paragraphs. Among them, Heyuan and Estuaries are often included in the upstream and downstream sections respectively. Pearl River is now divided into the river of the initial comments, described as follows: First, the source of beads