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首页> 外文会议> >Fractal features of soil microaggregate and particle-size distribution during natural succession on grassland on the Loess Plateau, China
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Fractal features of soil microaggregate and particle-size distribution during natural succession on grassland on the Loess Plateau, China

机译：黄土高原草地自然演替过程中土壤微团聚体的分形特征及粒度分布

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摘要

Fractal method has been shown to be a useful tool to evaluate soil erosion, desertification and soil physical properties. In this study, fractal dimension was used to investigate the changes in soil microaggregate and particle-size distribution during natural succession on grassland on the Loess Plateau of China. The results showed that as the grassland succession proceeds, the microaggregate and particle fractal dimension increased in the early 13 years and thereafter decreased. The soil microaggregate and particle-size distribution are dominated by 0.01-0.25mm class size. Microaggregate fractal dimension are positively correlated with small-microaggregate (0.05mm). Particle fractal dimension are positively correlated with clay content (<0.002mm) but negatively with sand content (>0.05mm). It was suggested that fractal dimension of microaggregate and particle-size distribution has a significant implication for evaluating soil structure on the Loess Plateau.
机译：分形方法已被证明是评估土壤侵蚀，荒漠化和土壤物理性质的有用工具。本文利用分形维数研究了黄土高原草地自然演替过程中土壤微团聚体和粒径分布的变化。结果表明，随着草地演替的进行，微团聚体和颗粒的分形维数在13年初期增加，随后减小。土壤微骨料和粒度分布主要由0.01-0.25mm的颗粒大小决定。微骨料的分形维数与小微骨料（<0.01mm）呈正相关，而与大微骨料（> 0.05mm）呈负相关。分形维数与粘土含量（<0.002mm）成正相关，而与沙子含量（> 0.05mm）成负相关。研究表明，微骨料的分形维数和粒径分布对评价黄土高原土壤结构具有重要意义。

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  • 来源
    《》|2010年|p.361-366|共6页
  • 会议地点 Xian City(CN);Xian City(CN);Xian City(CN)
  • 作者

    Chao Zhang; Sha Xue; Guobin Liu; Liangxin Fan; Zilin Song;

  • 作者单位

    Institute Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resource Northwest AF University, Yangling, Shaanxi, 712100,PR China;

    Graduate School of Chinese Academy of Sciences, Beijing 100049,PR China;

    Institute Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resource Northwest AF University, Yangling, Shaanxi, 712100,PR China;

    Institute Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resource Northwest AF University, Yangling, Shaanxi, 712100,PR China;

    Institute Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resource Northwest AF University, Yangling, Shaanxi, 712100,PR China;

    Institute Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Res;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 环境规划与环境管理;环境规划与环境管理;
  • 关键词

    microaggregate; particle-size distribution; fractal dimension; succession;

    机译：微骨料粒度分布;分形维数;演替;

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