摘要
羊卓雍湖地区面积8600平方公里。在区内用网格法和随机布点法,采土样54个,采水样53个。分析了土壤中的14种元素(Cr,Cu,Pb,Zn,Zr,Be,Ni,Co,Mn,Ti,Ga,Yb,Y,V)含量,以及水体中的8种元素(Cr,Cu,Pb,Zn,Ni,Co,Mn,V)含量。用偏度-峰度法和偏态系数检验了土壤中的元素,并统计了土水环境背景值。检验结果表明,本区土壤中,除Mn,Yb的含量属对数正态分布外,其余12种元素含量均呈正态分布。水体中地表水比地下水的元素含量丰富。
The Yamzho Yumco Lake Region, located between 28°18′-29°12′N and 90°12′-91°36′E, has an area about 8,600km2.Net-point method and Random Sampling were used to collect samplings in the lake region so that mean value could be restricted and sample number could be defined. 107 samples of soil and water were collected, in whicb there were 54 soil samples and 53 water samples repectively.Contents of 14 elements; Cr, Cu, Pb. Zn, Zr, Be, Ni, Co, Mn,Ti, Ga, Yb, Y and V were analysied in soil samples. Meanwhile Cr,Cu,Pb,Zn,Ni,Co,Mn and V were analysied in water samples.Contents of elements and their distributed formations in soil were inspected by deviation--peak value method and skewness; meanwhile environmental background values of water and soil were counted, too.As a result, contents of Mn,Yb belong to logarithmic normal distribution and rest elements all belong to normal distribution. Based on more or less than 14 element contents at the region, the order of soil types is: mountain bog soil >mountain cold soil >meadow soil >Baga soil > Shaga soil >black meadow soil >mountain barrier soil; the order of 14 element contents is. Ti >Mn>Cr>Zr>V>Zn>Cu>Ni>Co>Y>Pb>Ga>Be>Yb. They are more aboundant in bottom and surface than in median.Some differences of element contents were found in different water bodies. There water in stream and lake would be more aboundant than in underground water. The order of 8 element contents in water body at Yamzho Yumco Lake Region is Zn,Mn>Cr>Co,Ni,V>Pb>Cu.
出处
《山地研究》
CSCD
1990年第1期27-33,共7页
关键词
西藏
湖泊
土壤
水体
环境
背景值
Xizang, Yamzho Yumco Lake, soil, water, environmental background value
