《Table 2 The proportional ratio between sandy paleosol samples and sand samples for each grain size

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《Comparison of two classification methods to identify grain size fractions of aeolian sediment》

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Note:Pp is the average proportion of sandy paleosol samples，Ps is the average proportion of sand samples.Grey shade reflects a better grain size fraction for each grain size data sequence.

The average proportion ratio between samples of sandy paleosol and of sand was calculated for each grain-size fraction of all grain size data sequences（Table 2）.Compared to the grain size fraction uc-GSC-dD，the proportion ratio of uc-GSCStd shows lower value in all three sections（the gray shade in Table 2）.Similarly，the differences of us-GSCStd vs.us-GSCdD also display in all three sections，larger proportion ratios in JJ and SDG correspond to us-GSCStd，while the larger proportion ratio in XL corresponds to us-GSC-dD（the gray shade in Table 2）.However，the difference of uf-GSCStd vs.uf-GSCdD only exist in XL（the gray shade in Table 2）.It seems that the classification differences between GSCStd and GSCdD methods come from grain-size fractions uc and us.AN-OVA was also conducted for each of three grain size fraction pair of uf，uc and us.The results show that，the proportion ratio produced by the GSCStd method does not significantly differ from that of the GSCdD method（at the 0.05 significant level）.