Fractal Characteristics Research on Soil Aggregates during Highway Slope Vegetation Restoration of Different Ages in Guanzhong Plain

LIU Ai-xia; GAO Zhao-liang; LI Yong-hong; WANG Tian-wei; GUO wen

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Fractal Characteristics Research on Soil Aggregates during Highway Slope Vegetation Restoration of Different Ages in Guanzhong Plain

更新时间：2024-11-07

- Fractal Characteristics Research on Soil Aggregates during Highway Slope Vegetation Restoration of Different Ages in Guanzhong Plain
- Vol. 25, Issue 1, (2011)
- 作者机构：
  
  1. 中国科学院水利部水土保持研究所,陕西,杨凌,7121002. 中国科学院水利部水土保持研究所,陕西,杨凌,712100
  2. 西北农林科技大学水土保持研究所,陕西,杨凌,7121003. 西北农林科技大学资环学院,陕西,杨凌,712100
- 作者简介：
- 基金信息：
- DOI：
  CLC： S152.4
- Published：2011
- 稿件说明：
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LIU Ai-xia, GAO Zhao-liang, LI Yong-hong, et al. Fractal Characteristics Research on Soil Aggregates during Highway Slope Vegetation Restoration of Different Ages in Guanzhong Plain[J]. 2011, 25(1).
DOI：

LIU Ai-xia, GAO Zhao-liang, LI Yong-hong, et al. Fractal Characteristics Research on Soil Aggregates during Highway Slope Vegetation Restoration of Different Ages in Guanzhong Plain[J]. 2011, 25(1). DOI：

摘要

选取14个关中平原高速公路路堤边坡样地

分析了不同植被恢复年限下土壤水稳定性团聚体特征.结果表明:(1)随年限延长

＞1 mm大团聚体表层含量基本大于亚表层含量;＜1 mm团聚体则相反;＜0.25 mm微团聚体含量呈现出先增大后又减小的趋势

而＞5 mm团聚体含量则先减小后增大.(2)研究区阳面边坡分形维数为2.45～2.79

阴面边坡分形维数为2.48～2.70

变化幅度较小;表层分形维数小于亚表层.(3)分形维数与＜0.25 mm团聚体含量显著正相关

与有机质、全氮显著负相关.(4)因子分析可简化多因子问题的研究

从15个因子中确定:有机质、全氮、硝态氮、速效磷和1～0.5

0.5～0.25

＜0.25 mm是影响团聚体分形维数的主要因子.植被恢复促进团聚体均匀分布

使土壤分形维数降低

改善土壤结构.

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