论文部分内容阅读
长江中游江汉洞庭地区的地貌环境,由荆江河段、江汉平原和洞庭湖地区三部分组成,历史时期演变错综复杂,导致该地区生态环境,至今存在许多严重问题。因此,研究该地区的环境演变过程,其重要性是不言而喻的。荆江以北的江汉平原,地貌演变的历史过程,从外力因素考虑,汉江中下游的来水来沙和河道演变,是仅次于长江影响的第二个关键因素。
The geomorphic environment of the Dongting area in the Jianghan area in the middle reaches of the Yangtze River consists of three parts: the Jingjiang reach, the Jianghan Plain and the Dongting Lake. The historical evolution has been complicated and led to the ecological environment in the region. So far, many serious problems have been encountered. Therefore, the importance of studying the evolution of the environment in the area is self-evident. The Jianghan Plain to the north of Jingjiang River is the second key factor affecting the Yangtze River after the evolution of water and sediment in the middle and lower reaches of the Hanjiang River due to external factors.