黄河三角洲潮滩发育时空谱系

研究黄河三角洲潮滩发育的时空话系指出：在时间上，黄河三角洲潮滩系由不同时期河口滩发育而成，各段潮滩发育时间因素的差异在比较形态学上有清晰反映，在空间上，并存着处于不同发育阶段上的四种类型（阶段）。由此构成了黄河三角洲前沿所特有的湖滩形态时空体系。

^THE MORPHOLOGIC PHYLOGENETIC TEMPORAL SPACIAL SYSTEM OF THE TIDAL FLAT OF THE YELLOW RIVER DELTA

The tidal flat of the Yellow River Delta consists of four different phylogenetic stages in temporal and spatial scales. The tidal flat of the Yellow River Delta was shaped from stream outlet banks of different periods and consists of four models as follows: (1 ) The morphologic model (or stage ) of the present stream outlet banks. (2) The intermediatc morphologic model (or stage) of stream outlet banks and tidal flat. The original stream outlet banks were abandoned 20-30 years ago.(3) The tidal flat model (or stage ) of the Yellow River Delta in the modern history (developing stage). The original stream outlet banks were abandoned about 100years ago. (4) The tidal flat model (or stage )of the ancient Yellow River Delta (developing stage). The original stream outlet banks were abandoned 800 - 900years ago. The four morphologic models (developing stages ) of tidal flat of the Yellow River Delta form the features of 'a unified phylogenetic system in temporal and spatial scales.