千山土壤类型及土壤镉、铅、锌、铜、铬、汞微量元素背景值的研究

Study on the Soil Types and Background Levels of Cd、Pd、Zn、Cu、Cr、Hg in Qian Mountain

本文以植被类型为依据,讨论了各成土因素,将千山土壤确定为棕壤一大土类,下属三个亚类,分别为生草棕壤、棕壤、草甸棕壤以及粗分为八大土种,并做了一定量的化学分析。用原子吸收及冷原子法、测定了千山土壤中的铜、铬、汞、锌、镉、铅的含量,得出了千山土壤中六种元素的背景值。背景值用平均值及标准差来表示。讨论了土壤母质类型及土壤剖面的理化性质对土壤中元素背景值有一定影响。结论是土壤成土母质既使相同,由于地形,水热条件,理化性质等影响也会使其元素产生重新分配,因而影响土壤背景值的含量。

A famous natural Conservation,Qian Mountain is located in LiaoNing Province.On the basis of Plant community types, the Soil—forming factors were discussed.The Soil in Qian Mountain was classified one great group (brown earth),three subgroups (grass brown earth,brown earth and meadow brown earth)and eight soil species.Some chemical elements,Cu.Cr、Hg、Zn、Cd、Pb background levels in Soil were measured.They were expressed by average and standard error,The influence of the physical and chemical characters on the element background levels in soil were studied. It was found that chemical element background levies are different because of the efects of topgraphy,water and heat condition and the physical and chemical characters,even on the same soil type.