根系主要成分含量对根系固土效能的影响

朱锦奇; 王云琦; 王玉杰; 张会兰; 白雪琪; 李云鹏; 刘勇

doi:10.13961/j.cnki.stbctb.2014.03.032

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根系主要成分含量对根系固土效能的影响

试验研究

- 根系主要成分含量对根系固土效能的影响
- Effect of Root Main Component Content on Its Soil-binding Capacity
- 水土保持通报 2014年33卷第3期页码：166-170
- 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：
  
  北京市教委科学研究与研究生培养共建项目"北京山区生态风险监测与评估技术研究"
- DOI：10.13961/j.cnki.stbctb.2014.03.032
  中图分类号：
- 纸质出版：2014
- 稿件说明：
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朱锦奇, 王云琦, 王玉杰, 等. 根系主要成分含量对根系固土效能的影响[J]. 水土保持通报, 2014,33(3):166-170.

ZHU Jin-qi, WANG Yun-qi, WANG Yu-jie, et al. Effect of Root Main Component Content on Its Soil-binding Capacity[J]. Bulletin of Soiland Water Conservation, 2014, 33(3): 166-170.
朱锦奇, 王云琦, 王玉杰, 等. 根系主要成分含量对根系固土效能的影响[J]. 水土保持通报, 2014,33(3):166-170. DOI： 10.13961/j.cnki.stbctb.2014.03.032.

ZHU Jin-qi, WANG Yun-qi, WANG Yu-jie, et al. Effect of Root Main Component Content on Its Soil-binding Capacity[J]. Bulletin of Soiland Water Conservation, 2014, 33(3): 166-170. DOI： 10.13961/j.cnki.stbctb.2014.03.032.

摘要

选取中国北方两种常见树种油松(Pinus tabulaeformis)和元宝枫(Acer truncatum)

对这两种树0.2~6 mm直径的根系直径、根系抗拉强度、整根的根土复合体强度、根系3种主要成分含量(纤维素含量、半纤维素含量与木质素含量)进行测定。结果表明

随着根系直径的增加

植物根系半纤维素含量增高

纤维素含量与木质素含量降低

从而植物的抗拉强度降低。植物根系抗拉强度与纤维素含量、木质素含量成正相关关系

与半纤维素含量成负相关关系。因此

在排除根系结构影响的前提下

植物根系纤维素含量与木质素含量是导致不同植物种固土效果差异的直接原因。

Abstract

This study selected the two common tree species of Pinus tabulaeformis and Acer truncatum in North China. The objective was to investigate the root system tensile strength

the overall root strength of root-soil composite and three root principal component contents (cellulose content

hemicellulose content and lignin content) of the two tree species for root diameters from 0.2 to 6 mm. The results showed that with the increasing root diameter

plant roots got a higher hemicellulose content and cellulose content and a lower lignin content

followed by decreased root tensile strength. Plant root tensile strength had positive correlations with cellulose content and lignin content and

negative correlation with hemicellulose content. Therefore

beyond the root structure influence

the cellulose content and lignin content of plant roots are the direct causes of differences between the soil-binding capacity.

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references

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