| 黄土与古土壤性质对坡面土生扭口藓分布的影响 |
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| 引用本文： | 伍铁牛,王林华,田磊,单志杰,周淑梅.黄土与古土壤性质对坡面土生扭口藓分布的影响[J].水土保持学报,2011,25(4):233-236,252. |
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| 作者姓名： | 伍铁牛 王林华 田磊 单志杰 周淑梅 |
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| 作者单位： | 1. 中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西杨凌712100／中国科学院研究生院,北京100049
2. 西北农林科技大学资源环境学院,陕西杨凌,712100 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目(KZCX2-YW-442) |
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| 摘 要： | 在杨凌营盘的黄土-古土壤坡面上,出露黄土的层位生长有较好的土生扭口藓,而出露古土壤的层位少有土生扭口藓分布,采样分析黄土与古土壤的物理性质和营养元素的含量,并进行室内培养实验。结果表明：古土壤的细颗粒（≤0.02 mm）含量高于黄土的;古土壤的速效K、速效Mn、速效Fe和有机质的含量高于黄土的;古土壤的CaCO3含量和速效P含量低于黄土的。在2个月的培养实验中,并未发现4个样品的生长状况出现显著差异。因此,黄土与古土壤营养元素的差异不是导致土生扭口藓空间分异的直接原因。由于古土壤粘粒含量较高,其表层更容易形成结皮,而且古土壤团聚体之间的粘合力较弱,在坡度约65°的坡面上,结皮在重力作用下脱落,而少有土生扭口藓分布。CaCO3含量与土生扭口藓分布的关联性还有待进一步研究。
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| 关 键 词： | 黄土 古土壤 土生扭口藓 土壤结皮 |
Effects of Loess and Paleosol Properties on the Distribution of Barbula vinealis on the Slope |
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| WU Tie-niu,WANG Lin-hu,TIAN Lei,SHAN Zhi-jie,ZHOU Shu-mei.Effects of Loess and Paleosol Properties on the Distribution of Barbula vinealis on the Slope[J].Journal of Soil and Water Conservation,2011,25(4):233-236,252. |
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| Authors: | WU Tie-niu WANG Lin-hu TIAN Lei SHAN Zhi-jie ZHOU Shu-mei |
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| Institution: | WU Tie-niu1,3,WANG Lin-hua2,TIAN Lei2,SHAN Zhi-jie1,ZHOU Shu-mei1,3(1.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau,Institute of Soil and WaterConservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling,Shaanxi 712100,2.College of Resources and Environment,Northwest A & F University,3.Graduate University of Chinese Academy of Sciences,Beijing 100049) |
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| Abstract: | On the loess-palaeosol slope in Yangling,there was little Barbula vinealis grown on the paleosol outcrop,while it grew well on the loess outcrop.The chemical and physical properties of loess and paleosol samples,and an indoor culture experiment were carried out.The results showed,for the contents of fine particles,the available K,available Fe,available Mn and organic matter,the values of paleosol were higher than those of loess,and as for the CaCO3 and available P,the content values of loess were higher tha... |
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| Keywords: | loess palaeosol Barbula vinealis soil crust |
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