Soil Structural Traits and Its Relation with Soil Saturated Hydraulic Conductivity in Redstone Park of Laiwu City

LIU Ling; LIU Yongzhong

doi:10.13961/j.cnki.stbctb.2016.04.033

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Soil Structural Traits and Its Relation with Soil Saturated Hydraulic Conductivity in Redstone Park of Laiwu City

- Soil Structural Traits and Its Relation with Soil Saturated Hydraulic Conductivity in Redstone Park of Laiwu City
- Bulletin of Soiland Water Conservation Vol. 36, Issue 4, Pages: 188-192(2016)
- 作者机构：
  
  1. 莱芜市园林管理局,山东,莱芜,271100
  2. 莱芜市市政工程管理处,山东,莱芜,271100
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2016.04.033
  CLC：
- Published：2016
- 稿件说明：
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LIU Ling, LIU Yongzhong. Soil Structural Traits and Its Relation with Soil Saturated Hydraulic Conductivity in Redstone Park of Laiwu City[J]. Bulletin of Soiland Water Conservation, 2016, 36(4): 188-192.
DOI：

LIU Ling, LIU Yongzhong. Soil Structural Traits and Its Relation with Soil Saturated Hydraulic Conductivity in Redstone Park of Laiwu City[J]. Bulletin of Soiland Water Conservation, 2016, 36(4): 188-192. DOI： 10.13961/j.cnki.stbctb.2016.04.033.

摘要

[目的

]

分析土壤水分运移过程，探究莱芜市红石公园土壤结构特征及其对饱和导水率的影响，为促进该区生态恢复和建设提供理论参考。[方法

]

采用环刀分层取样对研究区6块样地进行土壤物理结构特征测定，进行水分穿透试验，测量土壤饱和导水率。[结果

]

试验区土壤密度及石砾含量大小均表现为：纯草本 >灌木-草本 >乔木-草本；土壤

0.25

（>0.25mm水稳性团聚体含量）、含水率、总孔隙度及饱和导水率大小均表现为：乔木-草本 >灌木-草本 >纯草本；表层土壤具有更优的土壤结构及更大的饱和导水率；土壤饱和导水率与土壤密度、石砾含量呈现显著负相关关系，与土壤总孔隙度及

0.25

呈现显著正相关关系。[结论

]

土壤总孔隙度是土壤饱和导水率的最主要影响因子，土壤

0.25

含量、土壤密度及石砾含量次之。

Abstract

[Objective] The relationship between soil structure and soil saturated hydraulic conductivity was explored in Hongshi Park of Laiwu City to provide a theoretical basis to forecast the process of soil moisture migration. [Methods] Stratified sampling was carried out using ring knives in six sites of Redstone Park of Laiwu City. Soil saturated hydraulic conductivity and physical structural traits of the soil samples were measured to analyze the relationship between them. [Results] Soil bulk density and stone content of different land use types ranked as: herb soil >shrub-herb soil >trees-shrub soil. Indices of R0.25(>0.25 mm water stable aggregate)

soil moisture

soil porosity and soil saturated hydraulic conductivity had a same rank of trees-shrub soil >shrub-herb soil >herb soil. Soil structure and saturated hydraulic conductivity behaved better in surface soil layers than that in deep soil layers. Soil saturated hydraulic conductivity was found significantly and negatively correlated with soil bulk density and rock fragment. [Conclusion] Soil saturated hydraulic conductivity had significantly positive correlations with porosity and R0.25. Soil porosity was the key factor affecting saturated hydraulic conductivity.

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references

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