Heterogeneity of Soil Physical Properties Under Different Vegetation Types in Tianlaochi Watershed of Upper Stream of Heihe River Basin

WANG Yang; WANG Chao; ZHAO Chuan-yan; LIU Yi-yue

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Heterogeneity of Soil Physical Properties Under Different Vegetation Types in Tianlaochi Watershed of Upper Stream of Heihe River Basin

- Heterogeneity of Soil Physical Properties Under Different Vegetation Types in Tianlaochi Watershed of Upper Stream of Heihe River Basin
- Bulletin of Soiland Water Conservation Vol. 32, Issue 3, Pages: 13-17(2013)
- 作者机构：
  
  1. 兰州大学生命科学学院,甘肃,兰州,730000
  2. 兰州大学资源环境学院,甘肃,兰州,730000
- 作者简介：
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- Published：2013
- 稿件说明：
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WANG Yang, WANG Chao, ZHAO Chuan-yan, et al. Heterogeneity of Soil Physical Properties Under Different Vegetation Types in Tianlaochi Watershed of Upper Stream of Heihe River Basin[J]. Bulletin of Soiland Water Conservation, 2013, 32(3): 13-17.
DOI：

WANG Yang, WANG Chao, ZHAO Chuan-yan, et al. Heterogeneity of Soil Physical Properties Under Different Vegetation Types in Tianlaochi Watershed of Upper Stream of Heihe River Basin[J]. Bulletin of Soiland Water Conservation, 2013, 32(3): 13-17. DOI：

摘要

土壤物理性质在一定程度上决定了土壤层的水文特征

而不同植被类型对于土壤物理性质的改造会导致不同区域土壤层蓄水保土功能表现出较大差异。以祁连山黑河流域上游的天老池小流域为研究区域

研究青海云杉、祁连圆柏、亚高山草甸、灌木和干草原5种植被对于土壤物理性质的影响。结果表明:(1)青海云杉林土壤的容重最小

孔隙度最大

颗粒组成主要以粉粒为主。干草原和草甸草原土壤的容重最大

孔隙度最小;同一种植被类型在不同坡位的容重和总孔隙度大小具有较好的一致性

各植被类型上中下坡位均表现出随土壤深度的增加容重增大

总孔隙度减小的趋势。(2)研究区草甸草原0—20cm的土壤物理性质具有相似性

20—50cm土壤层的物理性质具有较高的一致性。

Abstract

Soil physical properties

to some extent

determine the hydrological characteristics of soil layers.The influences of different vegetation types on soil physical properties can significantly change the functions of soil and water conservation in soil layers of different regions.We discussed the effects of different vegetation types on soil physical properties in Tianlaochi

a small watershed located in the upstream of Heihe River basin.An experiment was carried out under the five vegetation types of Picea crassifolia

Sabina przewalskii

subalpine meadow

shrubs and steppe.Results show that(1)Picea crassifolia had the minimum soil bulk density and the largest porosity.Particles were mainly composed of silt.Steppe and meadow steppe had the highest soil bulk density and the minimum porosity.For the same vegetation types

soil bulk density and total porosity were consistent at different slope positions.With the increase of the depth

soil bulk density increased and total porosity decreased.(2)In meadow steppe

physical properties of the 0-20cm soil layer were similar

and physical properties of the 20-50cm soil layer were with greater consistency.

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