Distribution Model of Grain Size on Coastal Transverse Foredune at  Changle in Fujian Province

Key words: 
• coastal zone /
• transverse foredune /
• distribution of grain size /
• Changle City in Fujian Province

Abstract: The 81 samples were collected over three profiles on typical coastal transverse foredune, which is directly across the foredune, at Changle coastal region in Fujian Province that is one of the most typical coastal aeolian distribution regions in China. The parameters of grain size of 81 samples were analyzed and calculated by use of the number of mean size, standard deviation, skewness and kurtosis. The results show that the basic characteristics of grain size over coastal transverse foredune are accordant with the normal rule of coastal aeolian dune grain size, such as fine sands, high sorting degree, symmetrical skewness and middle degree kurtosis. It was also found that the parameters of grain size at different sites over typical coastal transverse foredune were almost the same, which had no distinct difference. The reasons of this distribution pattern of grain size on coastal transverse foredune at Changle City in Fujian Province mainly lie on the change of wind directions depending on monsoon, the influence of typhoon, smooth surface and low height of dune as well as good vegetation cover.