Six pedons of southern part of Tengger Desert, China, were studied comparing with a humid coastal sand dune soil of Tottori, Japan. Textual composition of moving sand dune which occupied the most part of the Desert were characterized by fine sand as the main component, While Tottori coastal sand dune was composed mainly of coarse sand. At the lower part of the Deser, the soil were wet, white colored salts were accumulated on the part of surface and salt tolerant vegetations were dominant. Clay, silt and fine sand particles were accumulated on the surface of cultivated lands along with the irrigation water from the Yellow River. In the orchard soils the thickness of the sediments derived from the Yellow River reached about fifty centimeters during 32 years irrigation, or, it corresponded to about 1.5 cm accumulation per year. These sediments wer considerably compact and required to be improved. In lowlands and ill-drained areas prominent accumulation of white colored salts was observed, while at the areas where the effective drainage was carried out the irrigation cultivations were continued for a long time. An artificial windbreak utilizing wheat straw was recognized to be very effictive to fix the surface soil of the moving sand dune, though it requires many years and prodigious labor.
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