%0 Journal Article
%T Genetic and micromorphological studies of the Holoence soil complex on the southern Loess Plateau<br>黄土高原南部全新世土壤微结构形成机理探讨
%A PANG Jiang-li
%A HUANG Chun-chang
%A CHEN Bao-qun
%A <br>庞奖励
%A 黄春长
%A 陈宝群
%J 地理研究
%D 2002
%I 
%X Detailed soil micromorphological analysisin Holoence loess-palaeosol profile in southern Loess Plateau, along with comparisons withanother profile nearby, the thesis discusses the characteristics of weathering and forming processes. It indicates that the micro-texture ofthe Holoence loess-palaeosol sequence is divided into both cementing texture including type 1, type 2 and type 3, and granular textureincluding type 4, type 5 and type 6.Cementing textureisalways in the palaeosol layers and was formed in warm-humid forest environment. Granular textureisalways in typical loess layers or weathering loess layers and was formed in a dry environment. It has been discovered that the palaeosol S 0 is separated into two distinct types of soils, namely palaeosols S 02 and S 01, because of the deposition of a layer (L x) inthe aridness. Soil S 0 substantively is a polycyclic soilthat is composed of two layers interbedding a loess layer, with two remarkable soil-formingprocesses. The lower soil S 02 is brown palaeosol, with the strongest argillification and eluviation, and was formed in early soil-forming phase. Argillic horizons were identified in the soil S 02. The upper soil S 01 is leached cinnamon palaeosol, with distinct argillification and weak calcification, and was developed in late soil-forming phase. The polycyclic soilS 0indicates that pedogenic environment has distinct variations. Cover layer above the polycyclic soilS 0is not a manured aggradated layer because of continuously piling up of loessial dung. It is a loess layer because of accelerated aeolian dust deposit. The cover is divided into both lower loess L 0weakly disturbed by cultivation activities and upper plough horizon strongly disturbed by cultivation activities. It indicates that it has been a relative arid period after the ending of formation of palaeosol S 0, with clear northwestmonsoon domino effect andaccelerated aeolian dust deposit. The polycyclic soilS 0 has been buried and become palaeosol of the Holoence.
%K soil complex
%K micromorphology
%K Holoence
%K Loess Plateau
%K climatic change<br>土壤微结构
%K 全新世
%K 黄土高原
%K 风尘堆积
%K 成土过程
%K 风积黄土层
%K 人类耕作活动
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=869B153A4C6B5B85&jid=C0C75E88BA2EE501C8298896F64A711F&aid=E751EF6FFF6F5A2D&yid=C3ACC247184A22C1&vid=659D3B06EBF534A7&iid=E158A972A605785F&sid=036D726259190A01&eid=3F419E61BD389CC8&journal_id=1000-0585&journal_name=地理研究&referenced_num=10&reference_num=26