【摘要】 通过对陕西扶风新店村剖面的土壤学和地层学研究 ,以及磁化率、全铁和粒度成分分析 ,认为 :周原黄土台塬表面完整的土壤剖面表现为多期发育的复合土壤 ,是由于全新世季风气候变化 ,导致以风尘堆积占优势的成黄土期与以生物风化成壤占优势的土壤发育期相互更迭造成的 ;仰韶文化时期的农业耕作是在下层古土壤 (S20 ) ,其主要发育时代为 85 0 0～ 6 0 0 0 a B.P.,青铜器时代先周文化时期的耕种土壤是上层土壤 (S10 ) ,其发育时代是 5 0 0 0～ 3 1 0 0 a B.P.,这个发育良好的复合土壤又被黄土层 (L0 )所埋藏覆盖 ,因而就成为古土壤 ;黄土 (L0 )是在过去 3 1 0 0多年来以降尘堆积为主形成的 ,它在堆积增长的同时被不断地耕种利用发展农业。更多还原

【Abstract】 Pedological and stratigraphic observation indicate that the Chernozem soil (S 0) on the Zhouyuan loess tableland is polycylic soil. Magnetic susceptibility, total Fe and grain-size analysis in the profile of soil complex at Xindiancun, Fufeng County identified two well developed soils (S 2 0 & S 1 0) overlying each other, and separated by a thin eolian loess bed, and then, buried by the most recent eolian loess (L 0). This soil complex has been developed because of the change in the intensity of eolian dust-fall and pedogenesis controlled by the change in strength in the northwest and southeast monsoon. The lower soil (S 2 0) was developed between 8 500～6 000 a B.P. and cultivated by the early Neolithic people for arable farming. The upper soil (S 1 0) was developed between 5 000～3 100 a B.P. and cultivated by the Bronze-age people. The recent loess (L 0) is the agricultural soil has been cultivated since the West Zhou Dynasty while it grows thicker because of eolian dust deposit.更多还原