论文部分内容阅读
盐沼前缘陡坎是潮滩环境中盐沼与粉砂—淤泥质光滩交界处的独特地貌形态,研究其形成过程与机理有助于理解盐沼湿地对潮滩发育及其稳定性的影响。根据江苏中部海岸盐城自然保护区核心岸段互花米草盐沼前缘陡坎形态参数(凹槽长度、凹槽宽度和陡坎高度)的分析,发现不同的形态参数组合对应于不同的陡坎演化阶段。根据陡坎形态特征差异,可将盐沼前缘陡坎韵律性形态发育过程分为三个阶段,而这三阶段的交替旋回过程与近岸波向的季节性变化有关。陡坎处的地貌特征与前缘光滩的沉积物特征表明陡坎形态特征形成与波浪作用有关,且显著的陡坎韵律性形态能够部分地应用边缘波理论来解释。
The fringe of the front of the salt marsh is a unique topography of the salt marsh and the silt-silt beach in the tidal flat environment, and its formation process and mechanism are helpful to understand the development and stability of the salt marsh on the tidal flat influences. According to the analysis of morphological parameters (length of groove, width of groove and height of scarp) on the front of Spartina alterniflora in Yancheng Nature Reserve, Jiangsu Province, it is found that different morphological parameters correspond to different steepness Evolution stage. According to the difference of morphological characteristics of scarp, the rhythmic morphological development of the scarp of the salt marsh can be divided into three stages. The alternation of these three stages is related to the seasonal variation of the coastal wave direction. The geomorphologic features at the steep ridge and the sediment features of the front littoral bank indicate that the formation of scarp morphological features is related to the wave action and the significant rhythmic morphology of scarp can be partially explained by the edge wave theory.