New knowledge of distribution character of fossil soil in the Middle reaches of the Yellow River has been presented in this paper.

本文对黄河中游地区古土壤分布特征提出了一些新的认识。

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Worldwide food production requires around 30% of the total soil available, 20% of fossil fuel energy and a major part of the fresh water flow3.

世界粮食生产大致需要30%全球土地，20%化石能源和大部分的淡水流量。

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