不同的树种对土壤的形成和性质有不同的影响。

Different species have different influences on soil formation and soil properties.

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在此基础上，对流动砂丘上土壤的形成发育演变方向以及在土壤分类中的地位和命名等问题进行了探讨。

Onthe basis of above analysis, the formation, development and evolution direction of the soil on mobile sand dunes and its position and naming in soil classification are approached.

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随着土壤的流失，它会下降，形成一个尘土山，一个土丘。

As the soil is shed, it drops down and forms a little hill of dirt, a mound.

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