沂蒙山区不同母岩发育土壤物理性质

张永坤; 吴元芝; 于兴修

doi:10.13961/j.cnki.stbctb.2014.05.014

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沂蒙山区不同母岩发育土壤物理性质

试验研究

- 沂蒙山区不同母岩发育土壤物理性质
- Physical Properties of Soils Developed from Different Parent Rocks in Yimeng Mountainous Region
- 水土保持通报 2014年33卷第5期页码：34-38
- 作者机构：
  
  1. 临沂大学水土保持与环境保育研究所山东省水土保持与环境保育重点实验室,山东,临沂,276000
  2. 山东师范大学人口&#,183
  3. 资源与环境学院,山东,济南,250014
  4. 湖北大学资源环境学院,湖北,武汉,430000
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目"沂蒙山区典型成土母质土壤的水分有效性和植被的耗水特征"(41101206)
- DOI：10.13961/j.cnki.stbctb.2014.05.014
  中图分类号：
- 纸质出版：2014
- 稿件说明：
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张永坤, 吴元芝, 于兴修. 沂蒙山区不同母岩发育土壤物理性质[J]. 水土保持通报, 2014,33(5):34-38.

ZHANG Yong-kun, WU Yuan-zhi, YU Xing-xiu. Physical Properties of Soils Developed from Different Parent Rocks in Yimeng Mountainous Region[J]. Bulletin of Soiland Water Conservation, 2014, 33(5): 34-38.
张永坤, 吴元芝, 于兴修. 沂蒙山区不同母岩发育土壤物理性质[J]. 水土保持通报, 2014,33(5):34-38. DOI： 10.13961/j.cnki.stbctb.2014.05.014.

ZHANG Yong-kun, WU Yuan-zhi, YU Xing-xiu. Physical Properties of Soils Developed from Different Parent Rocks in Yimeng Mountainous Region[J]. Bulletin of Soiland Water Conservation, 2014, 33(5): 34-38. DOI： 10.13961/j.cnki.stbctb.2014.05.014.

摘要

以沂蒙山区小圣堂小流域为研究区

对比分析了酸性岩石和钙质岩石发育土壤的物理性质及其影响因素。结果表明:(1)酸性岩石发育土壤石砾及砂粒含量较高

土壤质地由砂壤质到壤砂质

且随土层深度增加

石砾含量增加。钙质岩石发育土壤粉粒及黏粒含量较高

上下两层的土壤颗粒组成相差不大。受成土母岩影响两种土壤分形维数都很低

且酸性岩石发育土壤的分形维数更低。两种土壤石砾含量均大于10%

为粗骨土。(2)酸性岩石发育土壤的容重较大

总孔隙度和毛管孔隙度较小。两种土壤的容重和毛管孔隙度随土层深度的增加而变大

总孔隙度和非毛管孔隙度则反之。毛管孔隙度大小主要受土壤分形维数的影响。(3)酸性岩石发育土壤的饱和导水率大于钙质岩石发育土壤

酸性岩石发育土壤10-20 cm土层的饱和导水率较0-10 cm土层大

而钙质岩石发育土壤饱和导水率在不同土层深度呈现不规律的变化。土壤质地是影响沂蒙山区土壤饱和导水率的主导因素

其中

砂粒和粉粒含量的影响尤为明显。

Abstract

A comparative analysis of soil physical properties and their influencing factors was carried out between soils developed from either acidic and calcareous rocks in Xiaoshengtang small watershed in the Yimeng mountainous region. The results showed that:(1) The soils developed from acidic rocks contained more gravel and sand than those from calcareous rocks. Soil textures ranged from sandy loam to loamy sand

and the gravel content increased with soil depth. The silt and clay contents of the soils were slightly higher in soils developed from calcareous rocks than from acidic rocks. However

the particle size compositions of the upper and lower soil layers were similar for soils from the calcareous rocks. Both soil types had relatively low fractal dimensions

which were influenced by the parent rock

but those of the soils developed from acidic rock were lower. Furthermore

they were both poorly developed soils with gravel contents higher than 10%.(2) Soils developed from acidic rock had higher bulk densities than that from calcareous rocks

which had higher total and capillary porosities. The bulk densities and capillary porosities of the two soils increased with increasing soil depth and

conversely

the total porosities and non-capillary porosities decreased. Furthermore

the capillary porosities were mainly influenced by soil fractal dimensions.(3) The saturated hydraulic conductivities of the soils developed from acidic rock were higher than those from calcareous rock

and they were higher in the 10-20 cm soil layer than in the 0-10 cm layer. However

the saturated hydraulic conductivities of the soils developed from calcareous rock did not exhibit consistent changes in different soil layers. Soil texture

especially the sand and silt contents

was the main influencing factor of soil saturated hydraulic conductivity in the Yimeng mountainous region.

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