Major Elements in Soils Along a 2.8-km Altitudinal Gradient on the Tibetan Plateau,China

查看全文 作　　者：WANG [1]Zhaofeng;Alfred [2]E.HARTEMINK;ZHANG [1]Yili;ZHANG [3]Hua;DING [3]Mingjun

机构地区：[1]Key Laboratory of Land Surface Pattern and Simulation,Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences;[2]University of Wisconsin-Madison,Department of Soil Science,FD Hole Soils Lab;[3]Key Laboratory of Poyang Lake and Watershed Resarch,Ministry of Education,Jiangxi Normal University

出　　处：《Pedosphere》索引2016年第26卷第6期,共9页

基　　金：supported by the Strategic Priority Research Program of Chinese Academy of Sciences (No.XDB03030500);the National Key Technology Research and Development Program of China (No.2013BAC04B02);the National Natural Science Foundation of China (Nos.40801042 and 90202012) 摘　　要：There are a series of special mountain soils on the Tibetan Plateau of China in an alpine environment for the high altitude.However,very few studies have focused on major soil elements in relation to soil formation in this area.Aluminum(Al),iron(Fe),calcium(Ca),sodium(Na),potassium(K) and magnesium(Mg) contents of 237 topsoil samples covering a 2.8-km altitudinal gradient in uncultivated areas along the Qinghai-Tibet Railway of China were measured using inductively coupled plasma atomic emission spectroscopy.The spatial distribution of the elements and its relationship to the parent rocks and climatic parameters were analyzed.Soils along the gradient are derived from a range of parent materials,but most are less than 30 cm deep with little development(Cambisols).Soil Al,Fe and Mg contents showed a decreasing trend from the start station(Xining Station) to end station(Lhasa Station) of the Qinghai-Tibet Railway,whereas soil K and Na contents were relative stable from Xining Station to the Kunlun Mountains and then increased gradually.Soil Ca content was lower in the southern part of the Tanggula Mountains.The major soil element contents clearly re?ected the parent rock and climatic in?uences.Soils with higher Ca content appeared in areas with Ca-Mg carbonate rocks,soils with higher Al were found in areas with silicate-rich and high-Al silicate clastic rocks and silicate-rich aluminosilicate loose sediments.Soils with higher K and Na contents appeared in areas with high-K,high-Na and silicate-rich aluminosilicate rocks.Soil Na and K contents were affected by temperature,whereas the contents of Mg,Fe,Ca and Al were more affected by precipitation.Soil Na and K contents increased with increasing temperatures,whereas the contents of Mg,Fe,Ca and Al decreased with increasing precipitation.This analysis provides a relationship between soil properties and rapidly changing environmental conditions.The data can be used to investigate the effect of the climate or land use change on soil properties. 关键词：土壤元素含量山地土壤西藏高原海拔梯度电感耦合等离子体原子发射光谱法中国铝硅酸盐岩铁路沿线

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Major Elements in Soils Along a 2.8-km Altitudinal Gradient on the Tibetan Plateau,China

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