| 亚热带紫色沉积岩的成土过程及特点 |
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| 引用本文： | 唐时嘉,罗有芳.亚热带紫色沉积岩的成土过程及特点[J].西南农业大学学报,1994,16(6):550-555. |
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| 作者姓名： | 唐时嘉 罗有芳 |
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| 作者单位： | 中国科学院成都山地灾害与环境研究所 |
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| 摘 要： | 对四川盆地紫色沉积岩的成土演化过程及特点研究表明，亚热带紫色泥岩成土和演化分４个阶段，依次为紫色岩体石灰质淋洗，岩体表面机械破碎成岩尿质紫色土，紫色岩屑单粒化成壤质紫色土，壤质紫色土酸化与层状硅酸盐矿物分解和黄化。每一阶段有其特定的诊断属性和分异指标。
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| 关 键 词： | 紫色沉积岩 土壤形成 成土因素 亚热带 |
SOIL FORMATION PROCESS AND EVOLUTIONARY CHARACTERISTICS OF PURPLE SBDIMENTARY ROCKS IN THE SUBTROPICS |
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| Tang Shijia,Luo Youfang.SOIL FORMATION PROCESS AND EVOLUTIONARY CHARACTERISTICS OF PURPLE SBDIMENTARY ROCKS IN THE SUBTROPICS[J].Journal of Southwest Agricultural University,1994,16(6):550-555. |
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| Authors: | Tang Shijia Luo Youfang |
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| Abstract: | A study was carried out on purple argillaceous rocks and the soils drived from them in theSichuan Basin to understand the soil formation process and evolutionary characteristics of purplesedimentary rocks in the subtropics.The results demonstrated that soil formation from purpleargillaceous rocks to purple soils and subsequently to subtropic soils undergoes four stages:(1)carbonate leaching in the rocks,(2)mechanical slacking of the surface rocks,(3)single graindevelopment of purple rock fragments,and(4)decomposition of phyllosilicate mineral,soilacidification and soil yellowing. Each stage results in a certain type of soil with distinct soilproperties and diagnostic indexes. |
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| Keywords: | purple sedimentary rocks soil formation factors of soil formation subtropicalzone |
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