| 沙盖黄土丘陵坡地土壤理化特性随地形变化规律研究 |
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| 引用本文： | 张丽萍,王小云,张赫斯.沙盖黄土丘陵坡地土壤理化特性随地形变化规律研究[J].地理科学,2011,31(2):178-183. |
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| 作者姓名： | 张丽萍 王小云 张赫斯 |
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| 作者单位： | 1. 浙江省亚热带土壤与植物营养重点研究实验室环境污染修复与生态健康教育部重点实验室, 浙江大学环境与资源学院, 浙江 杭州 310029;2. 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 |
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| 基金项目： | 中国科学院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基金项目(10501-230)资助 |
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| 摘 要： | 在陕西神木县与内蒙古东胜市交界的饮马泉小流域,选择有代表性的坡面进行地形剖面和土壤层垂直方向的系统采样。每个样品进行了粒级、土壤质量含水量、土壤有机质测试。经数据的分析模拟,得以下结论:①土壤粒级构成和物理性粘粒含量特征,可以指示研究区土壤的沙化程度和演化趋向,其具有向西北更干旱粗化方向过渡的倾向。②土壤水分随地貌部位的变化规律比较明显,在峁坡顶部和上部,垂向上具有自上而下增加的趋势,而在峁坡下部和坡脚却正好相反。不论何种地貌部位都存在一个相近的土壤蒸发、渗漏、持水能力相对的平衡深度。③土壤的物理性粘粒含量与土壤的水肥关系密切,物理性粘粒含量相对高的土壤剖面,土壤的水肥组合效果较好。④土壤水肥质地的组合效果,丘陵顶部的最差,依次过渡到坡脚的组合效果最好。其进一步表明,地貌因素在土壤形成后的一系列熟化、退化、被侵蚀和沙化的演化过程中,地貌仍起着至关重要的作用。
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| 关 键 词： | 沙盖黄土丘陵 物理性粘粒 土壤含水量 有机质 坡地剖面 |
| 收稿时间： | 2010-02-23 |
| 修稿时间： | 2010-06-01 |
Evolution of Physical and Chemical Characteristics of Loess with Different Landforms in Slope Field under Sand Cover |
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| ZHANG Li-ping,WANG Xiao-yun,ZHANG He-si.Evolution of Physical and Chemical Characteristics of Loess with Different Landforms in Slope Field under Sand Cover[J].Scientia Geographica Sinica,2011,31(2):178-183. |
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| Authors: | ZHANG Li-ping WANG Xiao-yun ZHANG He-si |
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| Institution: | 1. Zhejiang Provincial Key Laboratory of Subtropical Soil and Plant Nutrition, Key Laboratory of Polluted Environment Remediati and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang 310029, China;2. National Key Laboratory of Soil Erosion and Dry Land Agriculture in Loess Plateau, Institute of Soil and Water Conservation, Ministry of Water Conservancy, Chinese Academy of Sciences, Yangling, Shaanxi 712100, China |
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| Abstract: | The study aimed at the impacts of the different landforms on the soil physical composition,soil moisture content and soil fertility of the slope loess field under sand cover.The series of samples were collected at section planes and vertical soil layers,in Yinmaquan watershed located on the boundary between Shenmu County and Dongsheng City,where the slope field had the representations.The soil texture,gravimetric soil moisture content and organic matter content of the samples were measured.Based on the anal... |
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| Keywords: | slope loess field under sand cover physical clay granule soil moisture content organic matter section plane in slope field |
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