| 黄土高原小流域土壤阳离子交换量分布特征及影响因子 |
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| 引用本文： | 王文艳,张丽萍,刘俏.黄土高原小流域土壤阳离子交换量分布特征及影响因子[J].水土保持学报,2012,26(5):123-127. |
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| 作者姓名： | 王文艳 张丽萍 刘俏 |
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| 作者单位： | 1. 浙江大学环境与资源学院,浙江省亚热带土壤与植物营养重点研究实验室,污染环境修复与生态健康教育部重点实验室,杭州310058
2. 浙江大学环境与资源学院,浙江省亚热带土壤与植物营养重点研究实验室,污染环境修复与生态健康教育部重点实验室,杭州310058 黄土商愿土壤仗馈与早地农业国家重点夹验室,陕西杨凌712100 |
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| 基金项目： | 黄土高原土壤侵蚀与旱地农业国家重点实验室项目(10501-297) |
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| 摘 要： | 通过对黄土高原陕北地区3个小流域(朱家沟、纸坊沟和泥河沟)27个采样点的54个土壤样品分析,应用统计方法讨论土壤阳离子交换量的分布特征和影响因子。结果表明:(1)在3个所选定的典型小流域中,土壤CEC呈现明显的地带性,从北到南,CEC值显著升高。(2)在同一流域,CEC垂直地带变化基本表现为随高度降低而增大;而在同一剖面中,表层土壤CEC值总是高于下层。通过相关性分析和逐步回归检验,得出在粘土矿物类型基本相同的前提条件下,影响CEC值变化的主要因素有pH值、土壤黏粒含量和有机质含量,粉粒含量的影响较小,而砂粒含量则与CEC表现出显著负相关。
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| 关 键 词： | 黄土高原 阳离子交换量 分布特征 |
Distribution and Affecting Factors of Soil Cation Exchange Capacity in Watershed of the Loess Plateau |
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| WANG Wen-yan,ZHANG Li-ping,LIU Qiao.Distribution and Affecting Factors of Soil Cation Exchange Capacity in Watershed of the Loess Plateau[J].Journal of Soil and Water Conservation,2012,26(5):123-127. |
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| Authors: | WANG Wen-yan ZHANG Li-ping LIU Qiao |
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| Institution: | 1 (1.College of Environment and Resource Sciences,Zhejiang University, Zhejiang Provicial Key Laboratory of Subtropic Soil and Plant Nutrition,Key Laboratory of Polluted Environment Remediation and Ecological Health,Ministry of Education,Hangzhou 310058; 2.State Key Laboratory of Soil Erosion and Dry Land Farming on the Loess Plateau,Yangling,Shaanxi 712100) |
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| Abstract: | Through analyzing 54 soil samples of 27 sample points in Shanbei watersheds which included Zhujiagou,Zhifanggou and Nihegou,the distribution and affecting factors of soil cation exchange capacity were discussed by statistical method.The results showed that:(1)The soil CEC had obvious zonality,and the CEC value increased markedly from north to south in three selected typical watersheds.(2)The vertical zonality changes displayed that soil CEC increased with height reduced in the same watershed;the CEC value of surface layer were higher than the lower in the same profile.Based on the premise that the clay minerals in the same basic types,by using the correlation analysis and stepwise regression testing,the conclusion as followed: The main factors that influenced CEC value changes had pH,the soil clay content and the organic matter content;the effect of silt content was small;while the sand content showed significant negative correlation with CEC. |
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| Keywords: | Loess Plateau cation exchange capacity distribution characteristics |
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