摘要
通过对辽宁省朝阳市凤凰山古土壤剖面中各地层土壤Rb、Sr含量的测定,分析Rb和Sr的分布特征并通过Rb/Sr比值判断土壤的风化成壤作用强弱。结果表明,在整个剖面中,Sr含量变化幅度明显大于Rb的变化幅度;Rb/Sr比值的变化与Sr含量变化呈显著的负相关系,且黄土层的Rb/Sr比值明显低于古土壤层;Rb/Sr比值可指示土壤风化成壤作用强弱,在朝阳凤凰山古土壤剖面中,S4层经受的风化成壤作用最强,而L1层经受的风化成壤作用最弱。
Based on the analysis of the Rb、Sr contents of the paleosol section at Fenghuang Mountain in Chaoyang,distribution regularity of Rb、Sr elements in the profile and development degree of different stratigraphy are discussed in this paper. The results show that the change range of Sr content in the whole profile is much higher than the change range of Rb. Rb/Sr ratio and the Sr content assumes the obvious negative correlation relations,and the Rb/Sr ratio in the loess is less than that in the paleosol. In the whole profile,S4 is influenced by the most intensity of weathering and pedogenesis,and pedogenesis was the most weakened in L1.
出处
《农业科技与装备》
2010年第4期9-11,共3页
Agricultural Science & Technology and Equipment
基金
国家自然科学基金课题(40671079)
