粉砂淤泥质潮滩潮沟形态特征及发育演变过程研究现状

Reviews of morphological characteristics and evolution processes of silty mud tidal creeks

从潮沟分类、潮沟地貌形态特征及发育演变过程等方面回顾分析了潮沟系统的研究进展。认为Strahler在Horton分级方法基础上提出的潮沟分级模式相对更为合理;潮沟总长与潮盆集水面积之间存在正相关关系,潮差与潮沟密度间存在正相关关系,植被对潮沟密度的影响尚无一致结论;对于潮沟截面形态的研究主要集中于宽深比、不对称性以及沉积物和植被对其影响作用;潮沟发育演变动力机制的研究在定性层面的成果较多,定量研究成果相对较少。指出潮沟内复杂的水流结构、潮沟边壁稳定性,以及通过物理模型试验、数值模拟、遥感分析等综合性手段建立影响因素与潮沟形态特征的定量关系等是今后的研究热点。

Research progress on the tidal creek system is reviewed in terms of classification, morphological characteristics, and evolution processes of tidal creeks. It is suggested that the classification mode of tidal creeks proposed by Strahler based on the Horton＆#39;s classification method is relatively reasonable. The total length of the tidal creek is positively correlated with the water catchment area, the tide range is positively correlated with the tidal creek density, and the influence of vegetation on the tidal creek density is inconclusive. Studies on the cross-sectional morphology of the tidal creek focus on the influence of the width-depth ratio, asymmetry, sediment, and vegetation on the cross-sectional morphology of the tidal creek. There are more qualitative results and fewer quantitative results regarding the dynamic mechanisms of tidal creek evolution. It is pointed out that, in future research, more attention should be paid to the complex flow structure in tidal creeks, the stability of side walls of tidal creeks, and the quantitative relationship between morphological characteristics of tidal creeks and their factors through physical model, numerical simulation, and remote sensing analysis techniques.