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  • CN 62-1070/P
  • ISSN 1000-694X
  • 双月刊 创刊于1981年
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生物与土壤

沙漠-黄土南北样带土壤物理性质区域分异特征

  • 杨岩岩 ,
  • 刘连友 ,
  • 曹恒武 ,
  • 贾振杰
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  • 北京师范大学 减灾与应急管理研究院, 北京 100875

收稿日期: 2012-06-28

  修回日期: 2012-07-27

  网络出版日期: 2013-01-20

Change of Soil Physical Properties from Desert Area to Loess Area in China

  • YANG Yan-yan ,
  • LIU Lian-you ,
  • CAO Heng-wu ,
  • JIA Zhen-jie
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  • Academy of Disaster Reduction and Emergency Management, Beijing Normal University, Beijing 100875, China

Received date: 2012-06-28

  Revised date: 2012-07-27

  Online published: 2013-01-20

摘要

采集了沙漠-黄土南北样带从北到南的沙漠区、过渡区、黄土区的土壤样品,测量和分析了不同区域土壤容重(D)、粒度特征。结果表明:①D沙漠区>D过渡区>D黄土区,土壤容重的平均值依次为1.53 g·cm-3、1.51 g·cm-3、1.41 g·cm-3,过渡性明显;②沙漠区以中砂和细砂为主,过渡区以细砂为主,黄土区以细砂和粉砂为主。从沙漠区到黄土区,土壤颗粒逐渐变细,粘粒含量增加,分选性变差,偏度均属正偏,且在增大,峰态从常峰态向窄峰态类型变化,过渡区和黄土区属于双峰态,沙漠区属于单峰态。

本文引用格式

杨岩岩 , 刘连友 , 曹恒武 , 贾振杰 . 沙漠-黄土南北样带土壤物理性质区域分异特征[J]. 中国沙漠, 2013 , 33(1) : 146 -152 . DOI: 10.7522/j.issn.1000-694X.2013.00021

Abstract

Through collecting the soil samples from desert area, desert-loss transitional area, and loss area, which are located in a meridional desert-loess transition zone in north Loess Plateau, we analyzed the soil bulk density and grain-size. The results showed that: (1) Ddesert>Ddesert-loss>Dloss, and the average soil bulk densities were 1.53 g·cm-3, 1.51 g·cm-3, 1.41 g·cm-3 for the three sub-areas, respectively, which had a transitional trend. (2) Medium and fine sand were higher in the desert area, fine sand was higher in the desert-loess transitional zone, while fine and silty sand were higher in the loess area. From the desert area to the loess area, the soil grain size became smaller; the content of clay particle increased; the sorting gets worse; the skewness belonged to a right skewness but having an increasing trend; the kurtosis changed from mesokurtic to leptokurtic. It was single-kurtosis in the desert area, and it is double-kurtosis in the transitional zone and loess zone.

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