摘要
本文在３４个土壤剖面１８１个样品大量元素和３６个剖面１７６个样品的Ｚｎ、Ｎｉ、Ｃｎ、Ｃｏ、Ｖ等微量元素分析资料的基础上，讨论了天山及其邻近地区土壤成土的地球化学过程、这些元素的空间分异。认为天山及其邻近地区土壤的形成存在着三个主要的成土地球化学过程，即脱盐基过程、镁、钙积过程、钠积过程；随海拔高度的降低，水分减少、温度升高，元素的空间分异表现为：盐基自高山淋溶后，朝着盆地方向，按它们的盐类溶解度大小．分别富集钙、镁、钠等的盐类；微量元素含量自高山至盆地逐渐减少。
ased
on analyzed results of major elements of 181 samples from 34 profiles andtrace elements of
176 samples from 36 profiles,this paper discusses soil geochemicalfornung processes and the
spatial differentiation of major elements and trace elementssuch as Zn,Cu,Ni,Co and V in soils
of the Tianshan Mountains and their neighboringregions.During formation of the soils there are
three main geochemical processeswhich are Ca and Na-leach1ng process,Mg and
Ca-enrichment process and Na-enrich-ment process.Spatial differentiation of the elements was
from the leaching of Ca,Na and Mg in high mountain to the precipitating of salts of Ca,Mg
andNa,respectively,according to the increasing of their solubility andgradual decreaseof the
total content of trace elen1ents from high mountain to basins with loweringof
altitude,decreasing of moisture,and increasing of temperature.
出处
《土壤学报》
CAS
CSCD
北大核心
1994年第2期180-189,共10页
Acta Pedologica Sinica
关键词
元素
土壤
地球化学分异
天山地区
Elements,Soils,Geochemical differentiation,Tianshan mountainsand their neighboring regions
