第四纪黄土剖面多元古土壤形成发育信息的揭示
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* 国家自然科学基金项目资助(编号49474039;19832060)


REVELATION OF INFORMATION ON GENESIS OF MULTI PALEOSOL FROM QUATERNARY LOESS PROFILE
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    摘要:

    以时间尺度20万年以来的洛川黄土剖面为研究对象。采用间隔30~50cm的密集采样,通过土样的物理、化学、矿物组成和孢粉分析及土壤微形态镜鉴的综合研究,对第四纪生物气候环境演变提出了新的见解。对原以代表干冷环境沉积为主的黄土地层(L),揭示了内伏半干旱环境的演化及相应的土壤发育过程;对原以代表暖湿环境的红褐色古土壤层,揭示了内伏干旱、半干旱环境的演化及干旱与湿润型孢粉共存的矛盾实质。研究证示:深厚的黄土剖面是在第四纪生物—气候环境演变过程中,通过黄土沉积、成壤强弱交替演化,形成发育的由不同土壤类型组成的特殊的多元古土壤剖面体系。

    Abstract:

    New Viewpoints on bio-climatic environmental evolution in Quaternary were proposed based on analysis of physical,chemical,mineralogical composition,spore pollen and micro-morphology studies on soil samples taken at 30~50 cmintervals from Luochuan loess profile dating back to 200,000 BC.The Loess layer(L),formerly interpreted as deposition in arid and cold climate,revealed semi-arid environmental evolution and corresponding soil formation.The red-brown paleosol layer(S),formerly represented warm and humid environment essentially revealed interior arid and semi-arid environmental evolution as shown by contrasting coexistence of both arid and humid type of spore pollen.The present study confirmed that thick Luochuan loess profile is a special multi-paleosol profile system eomprising different soil types and formed by alteration of loess deposition and soil formation in the course of bio-climatic environmental evolution in Quaternary.

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唐克丽,贺秀斌.第四纪黄土剖面多元古土壤形成发育信息的揭示[J].土壤学报,2002,39(5):609-617. DOI:10.11766/trxb200008010501 Tang Ke-li, He Xiu-bin. REVELATION OF INFORMATION ON GENESIS OF MULTI PALEOSOL FROM QUATERNARY LOESS PROFILE[J]. Acta Pedologica Sinica,2002,39(5):609-617.

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  • 收稿日期:2000-08-01
  • 最后修改日期:2001-10-15
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  • 在线发布日期: 2013-02-25
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