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地理科学 >

2010 , Vol. 30 >Issue 3: 458 - 464

DOI: https://doi.org/10.13249/j.cnki.sgs.2010.03.458

论文

关中盆地西部黄土剖面年代序列及其记录的成壤环境演变

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  • 1. 北方民族大学管理学院, 宁夏 银川 750021;
    2. 陕西师范大学旅游与环境学院, 陕西 西安 7100621;
    3. 南京信息工程大学大气科学学院, 江苏 南京 210044

收稿日期: 2009-07-24

  修回日期: 2009-12-08

  网络出版日期: 2010-05-20

基金资助

国家自然基金项目(40771018)资助。

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Chronosequence of Loess Section and Evolution of Pedogenic Environment in Western Guanzhong Basin

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  • 1. North University for Nationalities, School of Management, Yinchuan, Ningxia 750021;
    2. College of Tourism and Environment, Shaanxi Normal University, Xi'an, Shaanxi 710062;
    3. College of Atmospheric Science, Nanjing University of Information Science & Technology, Nanjing, Jiangsu 210044

Received date: 2009-07-24

  Revised date: 2009-12-08

  Online published: 2010-05-20

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摘要

应用光释光技术确定匠杨村黄土沉积序列年代框架。结合地层沉积特征和其他指标测量结果,得到该区自末次冰消期以来成壤环境演变:16.66~13.16kaB.P.期间气候干旱,风尘输入量较大,成壤作用微弱;13.16~8.31kaB.P.期间气候转暖转湿,风尘输入量最小,但因植被没完全恢复致使成壤强度仍很弱;8.31~3.24kaB.P.期间气候湿润,风尘输入量较小,是重要的成壤期,其间6.19~5.77ka和末期3.78~3.24ka旱化趋势导致风尘输入量增加和成壤强度减弱;3.24ka以来,在气候旱化趋势下风尘输入量增加,成壤作用再次减弱。

本文引用格式

贾耀锋, 黄春长, 庞奖励, 毛龙江 . 关中盆地西部黄土剖面年代序列及其记录的成壤环境演变[J]. 地理科学, 2010 , 30(3) : 458 -464 . DOI: 10.13249/j.cnki.sgs.2010.03.458

Abstract

The sedimentary chronosequence of Jiangyaocun (JYC) loess section was made by application of optically stimulated luminescence (OSL) dating techniques. Combination of sedimentary characteristics and measurements of other indicators, the paper has explored the evolution of pedogenic environment since the last deglaciation in this area. During the period of 16.66-13.16 ka, the pedogenesis was weak, which caused by the arid climate and larger amount of dust input. During the period of 13.18-8.31 ka, the climate became warming and wetting in the eolian deposits area, and the amount of dust input was smallest, but pedogenesis was still weak because vegetation was not fully recovered. During the period of 8.31-3.24 ka, there was an important pedogenic period due to the humid climate and smaller amount of dust input, and the amount of dust input was increase and pedogenesis was weaken due to significant trend of drought during the 6.19-5.77 ka and 3.78-3.24 ka. The amount of dust input was increase and pedogenesis weaken again originated from a significant trend of drought since 3.24 ka.

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