Relationship Between Soil Structure and Soil Anti-erodibility Under Two Forest Types in Shangshe Catchment

WU Huqiang; ZHANG Yakun; ZHANG Jinchi; ZHANG Shuifeng; SHAO Yongchang; ZHUANG Jiayao

doi:10.13961/j.cnki.stbctb.2015.01.003

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Relationship Between Soil Structure and Soil Anti-erodibility Under Two Forest Types in Shangshe Catchment

- Relationship Between Soil Structure and Soil Anti-erodibility Under Two Forest Types in Shangshe Catchment
- Bulletin of Soiland Water Conservation Vol. 35, Issue 1, Pages: 9-13(2015)
- 作者机构：
  
  南京林业大学森林资源与环境学院,江苏,南京,210037
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2015.01.003
  CLC：
- Published：2015
- 稿件说明：
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WU Huqiang, ZHANG Yakun, ZHANG Jinchi, et al. Relationship Between Soil Structure and Soil Anti-erodibility Under Two Forest Types in Shangshe Catchment[J]. Bulletin of Soiland Water Conservation, 2015, 35(1): 9-13.
DOI：

WU Huqiang, ZHANG Yakun, ZHANG Jinchi, et al. Relationship Between Soil Structure and Soil Anti-erodibility Under Two Forest Types in Shangshe Catchment[J]. Bulletin of Soiland Water Conservation, 2015, 35(1): 9-13. DOI： 10.13961/j.cnki.stbctb.2015.01.003.

摘要

[目的] 为了解土壤侵蚀的机理

探究土壤抗蚀性与土地利用类型、土壤结构的关系。[方法] 以安徽省岳西县毛尖山乡上舍村典型小流域马尾松林(Pinus massoniana Lamb)和桑树林(Morus alba L)为研究对象

在0-40 cm土壤深度范围内

按照10 cm间隔分层取样

室内测定土壤孔径、比表面积、崩解指数、不同径别(<0.5

0.5~1.0

1.0~2.0和2.0~2.5 mm)根系长度特征。[结果] 土壤抗蚀性强弱表现为马尾松林大于桑树林。表层0-10 cm范围内

桑树林地土壤根系小于马尾松土壤根系

土壤的抗蚀性随着土层深度的增加而减小;桑树林和马尾松林土壤根系主要分布在0-30 cm层次内

而且<1 mm的根系长度由表层向深层递减

土壤平均孔径随着深度的增加而减小

而比表面积随着深度的增加而增大;在0-40 cm深度马尾松各层次孔径分布呈分层现象

而桑树林各层次土壤孔径分布差异不大。土壤孔隙度和土壤孔径越大

土壤抗蚀性越强

而土壤颗粒比表面积越大土壤抗蚀性越小;通过SPSS分析得到桑树林地土壤抗蚀性与土壤根系质量在0.01水平上显著相关

马尾松土壤平均孔径与土壤根系质量在0.05水平上显著相关。[结论] 降雨时

由于马尾松林地地表覆盖均匀

坡面产生壤中流下渗

土壤20 cm以下分化明显

不易透水

导致下坡壤中流蓄满流出地表带出土壤颗粒。而桑树林地原为耕地无地表覆盖

人为翻种活动频繁

导致土壤层次性质相似

表层土壤颗粒流失严重。

Abstract

[Objective] To understand the mechanism and characteristics of soil erosion

and the relationship between soil anti-erodibility and land use type.[Methods] Taking mulberry (Morus alba) garden and masson pines (Pinus massoniana) forest which are in Shangshe village

Yuexi County

Anhui Province as study objects. Collecting the soil at 0-40 cm level every 10 cm

measuring their porosity

specific surface area

disintegration index

root system characteristics.[Results] The soil anti-erodibility of masson pine forest was stronger than that of mulberry garden

and that in the range of 0-10 cm

mulberry soil root

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