黄河三角洲典型潮沟发育演变过程分析  

Evolution process analysis of typical tidal creeks in the Yellow River Delta

作　　者：韩震 宗全利 金凯 祝秀芝[1] HAN Zhen;ZONG Quanli;JIN Kai;ZHU Xiuzhi(College of Resources and Environment,Qingdao Agricultural University,Qingdao 266109,China)

机构地区：[1]青岛农业大学资源与环境学院,山东青岛266109

出　　处：《水利水电科技进展》2024年第4期38-44,共7页Advances in Science and Technology of Water Resources

基　　金：山东省自然科学基金项目(ZR2021ME167);山东省重点研发计划项目(2022CXGC010401-04)。

摘　　要：以黄河三角洲东部、侧弯丁坝北部为研究区域,基于1997—2021年内共8期Landsat系列遥感影像,采用目视解译的方法提取潮沟网络,通过分析不同时期潮沟数量、长度、密度等特征,揭示了潮沟阶段性演变规律。结果表明:潮沟的全生命周期可划分为幼年期、青年期、成熟期和退化期4个阶段,其中幼年期潮沟数量和长度增长率最大,是青年期的3倍以上;青年期潮沟数量和长度继续增加,但增长率明显降低,潮沟网络系统逐渐趋于稳定;成熟期潮沟系统发育基本完成,潮沟长度、数量、曲率等形态特征无明显变化;退化期部分潮沟萎缩、消亡、废弃,2005—2007年Ⅰ组潮沟每年消亡10.8%。Taking the eastern part of the Yellow River Delta and the northern part of the side-bend spur dikes as the study area,the tidal creek network was extracted by visual interpretation based on the eight-phase Landsat series remote sensing images from 1997 to 2021,and the evolution laws of tidal creeks were revealed by analyzing the characteristics of the number,length and density of tidal creeks in different periods.The results show that the whole life cycle of tidal creeks can be divided into four periods:juvenile,young,mature and degraded periods,among which the growth rates of the number and length of tidal creeks are the highest in the juvenile period,which are more than three times those of the young period.In the young period,the number and length of tidal creeks continue to increase,but their growth rate slow down significantly,and the tidal creek network system gradually stabilizes.In the mature period,the development of the tidal creek system is basically completed,and there is no significant change in the length,number and curvature of the tidal creeks.During the degraded period,some tidal creeks shrink,die,and are abandoned,with 10.8%of tidal creeks in group I dying each year from 2005 to 2007.

关 键 词：黄河三角洲 潮沟 发育演变 时空特征 

分 类 号：P343.5[天文地球—水文科学]