罗刚,舒秋贵
LUO Gang,SHU QiuGui

• 1:西华师范大学地理科学学院

摘要(Abstract)：

嘉陵江水电枢纽建成运行后，对嘉陵江中游河段江心洲演变产生了较大影响。选取了受人为影响较小的小龙门江心洲作为研究对象，通过Landsat历史遥感影像，结合嘉陵江多年的水文数据，对比分析了水电站建站前后小龙门江心洲的形态演变特征和影响因素。结果表明：水电枢纽运行前，江心洲处于自然发育状态，总体呈增长趋势；水电站运行后，江心洲总体呈衰退趋势。这主要是由于上游水电站拦截了大量泥沙，水电站的集中泄水对江心洲造成的强烈冲刷作用，以及洲体岸线受水位升降变化等综合影响，使得江心洲不断后退萎缩。
After the completion and operation of the Jialing River Hydropower Project, the central island evolution in the middle reaches of the Jialing River has been greatly influenced. The Xiaolongmen central island, which was less affected by human activities, was selected as the research object. Based on the Landsat historical remote sensing images and hydrological data of Jialing River for many years, the morphological evolution characteristics and influencing factors of the Xiaolongmen central island before the construction of the hydropower station in 2003 and 2005 and after the completion of the hydropower station in 2009-2017 were comparatively analyzed. The results showed that before the operation of the hydropower station, the Xiaolongmen central island was in a state of natural development and showed an overall increasing trend. After the operation of Fengyi Hydropower Station and Xiaolongmen Hydropower Station in 2008, the Xiaolongmen central island was generally declined, This was mainly due to the interception of a large amount of sediment by the upstream hydropower station, the strong scouring effect of water discharge from the hydropower station on the central island, and the comprehensive influence of the rise and fall of the surrounding water level on the coastline of the central island, which lead to the continuous retreat and shrinkage of the Xiaolongmen central island.

关键词(KeyWords)： 嘉陵江水电枢纽;江心洲;形态演变;水沙变化
Jialing River Hydropower Project;Central island;Morphological evolution;Water and sediment changes

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金面上项目（41871324）

作者(Author): 罗刚,舒秋贵
LUO Gang,SHU QiuGui

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