文明起源时期河南孟津地区人类活动对土壤化学性质的影响

The impact of human activities on the chemical properties of paleosol in Mengjin, Henan Province during civilization

通过对河南孟津地区古土壤元素质量分数及比值的分析,研究文明起源时期该地区人类活动对土壤化学性质的影响．结果表明:研究地点王湾三期(4．3-4．0 kaBP)和二里头时期(3．9-3．5kaBP)的人类活动对古土壤化学性质产生了明显影响,土壤中有机碳、全氮和有机磷质量分数明显增加,人类活动还使古土壤中元素质量分数的比值发生了明显变化,w(C)／w(N)和w(OP)／w(TN)明显增加,二里头时期人类活动强度比王湾三期有所增强．

Based on chemical analysis of paleosol in Dayanghe site, Henan Province, we studied the impact of human activities on the chemical properties of paleosol during period of initial civilization. As shown by the results, during the third Wangwan period（4300～4000 aBP） and Erlitou period （3900～3500 aBP）, human activities caused OC, TN and OP contents to increase evidently in paleosol and w（C）/w（N） and w（OP）/w（TN） also obviously increased when human activities strengthened during Erlitou period in this region.