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中文摘要：
通过将红原泥炭地泥炭灰分的粒度特征与典型风成沉积物、湖泊沉积物、河流沉积物的粒度特征进行比较，发现泥炭灰分的粒度特征与典型风成沉积（如黄土、古土壤）相似，而与湖泊沉积以及河流沉积有较大差异。环境判别参数也显示泥炭灰分来源为风成的。据此，作者认为该地区泥炭沉积中的灰分物质是风成堆积，进而提出该地区泥炭灰分含量可以指示冬季风强度的变化。
英文摘要：
Based on the comparison of the grain size characteristics of the Holocene peat sediment in eastern Tibetan Plateau with that of typical eolian sediments, fluvial sediments, and lacustrine sediments, the authors find that the grain size characteristics of peat sediment in the study site closely resemble that of eolian sediments （ e. g. loess and paleosol）, but differ from that of fluvial sediments, and lacustrine sediments, no matter in the distribution curves or the cumulative curves. The discriminant parameter for the sedimentological environment determining, calculated by the statistical parameters of grain size, also shows the same result. So, the ash content in peat sediment can be used as a proxy to indicate the winter monsoon intensity, higher ash content shows stronger winter monsoon, and the vice versa.
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