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中国沙漠 ›› 2004, Vol. 24 ›› Issue (2): 149-152.

• 研究论文 • 上一篇    下一篇

陕西扶风黄土台塬全新世成壤环境变化研究

陈宝群, 黄春长, 李平华   

  1. 陕西师范大学 旅游与环境学院, 西北历史环境与经济社会发展研究中心, 陕西 西安 710062
  • 收稿日期:2002-09-06 修回日期:2002-11-25 出版日期:2004-04-20 发布日期:2004-04-20
  • 作者简介:陈宝群(1969-),男(汉族),江苏人,硕士,讲师,主要从事环境变迁研究。E-mail:chbq1292@sohu.com
  • 基金资助:
    教育部重大项目(01JAZJD770014); 国家自然科学基金(40071006)资助

Holocene Pedogensis and Environmental Change on the Loess Tableland in Fufeng County, Shaanxi Province

CHEN Bao-qun, HUANG Chun-chang, LI Ping-hua   

  1. College of Tourism and Environmental Sciences, Northwest Research Center for Historical Environment and Socio-economic Development, Shaanxi Normal University, Xi'an 710062, China
  • Received:2002-09-06 Revised:2002-11-25 Online:2004-04-20 Published:2004-04-20

摘要: 通过对陕西扶风全新世黄土剖面的土壤学和地层学研究、磁化率、酸碱度和粒度测定分析, 揭示了周原地区全新世成壤环境演变过程。黄土剖面中的埋藏古土壤S0形成于全新世大暖期的温湿环境中, 古土壤S0中黄土夹层(Lx)的存在, 表明6000aBP前后季风气候发生转折, 在6000~5000aBP出现一个干旱阶段, 并使得全新世大暖期分裂成为两个主要的温湿阶段。大约从3100aBP开始, 受全球降温过程的影响, 季风气候朝向干旱化方向发展, 全新世大暖期的成壤作用被黄土堆积所取代。现代表土大约从1500aBP开始发育。

关键词: 全新世, 环境演变, 季风气候, 周原地区

Abstract: The integrative pedological and sedimentary study was carried out in a Holocene loess profiles on the Zhouyuan loess tableland in Fufeng County, Shaanxi Province. The field investigation and the measurement of magnetic susceptibility, pH values and grain-size distribution has reveled the variations of the pedological environment during the last 11 500 years. Corresponding to the Holocene climatic optimum (8 500~3 100 a BP), Paleosol S0 was developed. The analytical results indicate that this soil is a soil complex. There was an arid phase (6 000~5 000 a BP) represented in the middle of the Holocene climatic optimum, during which a loess bed (Lx) was deposited. Therefore, the Holocene palaeosol S0 becomes two separated soils (S02 and S02)in this profile. It also shows that the period between 8 500 a BP and 6 000 a BP was the maxmum of the Holocene climatic optimum. From 3 100 a BP when the pre-dynastic Zhou people lived and built their Capital city "Qiyi" on the Zhouyuan loess tableland, the Holocene climatic optimum was ended and the monsoon climatic became colder-drier. The recent loess (L0) was accumulated. This is a widespread phenomenon over the Loess Plateau. The modern soil (MS) has been developed since about 1 500 a BP due to the disturbance of cultivation, the modern soil has been well developed in this profile.

Key words: Holocene, environmental change, monsoonal climate, Zhouyuan Region

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