论文部分内容阅读
长江为我国三大巨川之一,主干源委约5455公里,依其性质之不同,分为四段:上游为金沙江,中游由屏山至宜昌,下游由宜昌至南京,南京至海滨为三角洲。长江支流众多,整个流域面积占1950000余方公里。中外地学家对于长江发育的研究,皆极感兴趣,但由于所持的论点不同,故对其发生和演进的看法也不一致。事实上长江的发展过程是很复杂的,还待地学家们在实际工作和观察中多从事资料的搜集,进一步揭发长江发生和发育的真面目。由于时间短促,资料缺乏,现仅能大略地作一般的介绍,提出有关长江发育的三个主要问题,请讨论,并给以指正批评。
The Yangtze River is one of the three giant gorges in our country, with a total of 5,455 km of trunk source. According to its nature, the Yangtze River is divided into four sections: the upper reaches are the Jinsha River, the middle reaches are from Pingshan to Yichang, the lower reaches are from Yichang to Nanjing, Nanjing to the seaside are the delta . Many tributaries of the Yangtze River, the basin area of more than 1950000 square kilometers. Both Chinese and foreign geoscientists are extremely interested in the research on the development of the Yangtze River. However, due to the different arguments they hold, their views on their occurrence and evolution are also different. In fact, the development of the Yangtze River is very complicated. Geologists are also required to do more research in the actual work and observation to further reveal the true appearance of the Yangtze River. Due to the short period of time and the lack of information, we can only give general briefings and put forward three major issues concerning the development of the Yangtze River. Please discuss and give correct criticisms.