Fractal Characteristics and Related Affecting Factors of Particle Size Distribution of Different Forest Soil in Simian Mountains,Chongqing

WANG Xian; ZHANG Hong-jiang; CHENG Jin-hua; ZHANG Kun; ZHANG Jing-wen; SONG Nan; SUN Long

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Fractal Characteristics and Related Affecting Factors of Particle Size Distribution of Different Forest Soil in Simian Mountains,Chongqing

更新时间：2024-11-07

- Fractal Characteristics and Related Affecting Factors of Particle Size Distribution of Different Forest Soil in Simian Mountains,Chongqing
- Vol. 25, Issue 3, (2011)
- 作者机构：
  
  北京林业大学水土保持学院,北京,100083
- 作者简介：
- 基金信息：
- DOI：
  CLC： S152.3
- Published：2011
- 稿件说明：
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WANG Xian, ZHANG Hong-jiang, CHENG Jin-hua, et al. Fractal Characteristics and Related Affecting Factors of Particle Size Distribution of Different Forest Soil in Simian Mountains,Chongqing[J]. 2011, 25(3).
DOI：

WANG Xian, ZHANG Hong-jiang, CHENG Jin-hua, et al. Fractal Characteristics and Related Affecting Factors of Particle Size Distribution of Different Forest Soil in Simian Mountains,Chongqing[J]. 2011, 25(3). DOI：

摘要

运用分形模型研究了重庆四面山几种林地土壤颗粒的分形特征

并探讨了分形维数与粒级分布的关系及其影响因素。结果表明:①0-60cm土壤分形维数平均值的顺序为:针叶林>针阔混交林>楠竹林>阔叶林

阔叶林和楠竹林土壤具有相对疏松、通透性好的结构

而针叶林和混交林地土壤质地较细

具有较好的持水保肥性能。②随着土层深度的增加

阔叶林地土壤的分形维数减小最为显著

楠竹林地呈增大的趋势

而针叶林和针阔混交林地减小不显著。这种变化与4个剖面上粘粒含量的变化规律完全一致。③分形维数能够表征土壤颗粒的大小和数量

但对不同粒级颗粒含量的反映程度不同

主要由粘粒含量决定(R=0.964)

与砂粒含量显著负相关(R=-0.873)

与粉粒含量相关关系不显著(R=-0.004)。④多元回归分析表明

分形维数与有机质含量、全氮、有效磷、速效钾、毛管孔隙度、非毛管孔隙度、饱和含水量、毛管持水量和田间持水量具有一定的相关性。

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