一、前言——三角洲的分类①从地貌学观点,我国三角洲主要有三种类型。一是多沙善变的黄河三角洲类型,它是北方多沙河口处形成的三角洲;二是强潮河口三角洲,如长江三角洲;三是放射状汊道系统的三角洲,如珠江三角洲。 First, the foreword - the classification of the delta ① from the geomorphological point of view, there are three main types of delta in our country. The first is the flourishing Yellow River delta, which is a delta formed at the northern sand mouth. The second is strong tidal delta mouth, such as the Yangtze River Delta. The third is a delta-shaped delta system, such as the Pearl River Delta.