Spatial Distribution Characteristics of Soil Particle Composition on Typical Slopes in the Pisha Sandstone Area

HU Jian; XIN Junwei; TANG Mei; ZHEN Qing; ZHENG Jiyong; ZHANG Xingchang

doi:10.13870/j.cnki.stbcxb.2023.03.013

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Spatial Distribution Characteristics of Soil Particle Composition on Typical Slopes in the Pisha Sandstone Area

更新时间：2025-03-12

- Spatial Distribution Characteristics of Soil Particle Composition on Typical Slopes in the Pisha Sandstone Area
- Vol. 37, Issue 3, Pages: 95-100(2023)
- 作者机构：
  
  1. 西北农林科技大学资源环境学院, 陕西杨陵,712100
  2. 西北农林科技大学水土保持研究所, 陕西杨陵,712100
  3. 中国科学院水利部水土保持研究所, 陕西杨陵,712100
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2023.03.013
  CLC： S157.1
- Published：2023
- 稿件说明：
移动端阅览
HU Jian, XIN Junwei, TANG Mei, et al. Spatial Distribution Characteristics of Soil Particle Composition on Typical Slopes in the Pisha Sandstone Area[J]. 2023, 37(3): 95-100.
DOI：

HU Jian, XIN Junwei, TANG Mei, et al. Spatial Distribution Characteristics of Soil Particle Composition on Typical Slopes in the Pisha Sandstone Area[J]. 2023, 37(3): 95-100. DOI： 10.13870/j.cnki.stbcxb.2023.03.013.

摘要

为揭示土壤颗粒组成在垂直和水平方向上的分布规律

采集砒砂岩区典型坡面0—100 cm剖面的土壤

运用经典统计学测定其颗粒组成。结果表明:坡面0—100 cm土壤质地主要为砂壤土(59.21%)和壤砂土(36.40%)。随土层深度增加

砂粒含量增加

粉粒和黏粒含量减少

土壤逐渐呈现粗粒化的趋势;坡面尺度上

表层0—10 cm砂粒为弱变异

其余各层各粒级均为中等程度变异

且随土层深度增加变异性增强

不同粒级的变异系数表现为砂粒＜粉粒＜黏粒。沿坡面等高线方向

样带B粗粒化程度最弱

10 cm土层以下

样带B粗粒化程度最强。沿垂直坡面等高线方向

坡中砂粒含量(73.60%)相比于坡上和坡下分别增加6.90%(p＜0.05)和11.66%(p＜0.05)

坡下粉粒(31.85%)和黏粒(3.10%)含量相比于坡上和坡中分别增加13.13%(p＜0.05)

23.59%(p＜0.05)和4.36%

51.70%(p＜0.05)

坡中粗粒化程度最强

坡下是细颗粒堆积的主要区域。研究结果可加强对砒砂岩区坡面土壤颗粒空间分布规律的认识。

Abstract

To reveal the distribution pattern of soil particle composition in vertical and horizontal directions

soils from 0-100 cm layer profiles of typical slopes in the Pisha sandstone area were collected and their particle composition was determined by using classical statistics. Results showed that the soil texture of 0-100 cm layer on the slope was mainly sandy loam (59.21%) and loamy sandy soil (36.40%). With the increase of soil depth

the content of sand increased

the content of silt and clay decreased

and the soil gradually showed a trend of coarse graining. On the slope scale

the sand content in the soil surface layer of 0-10 cm were weakly variable

and the variability of all grain classes in the remaining layers was moderate

and the variability increased with depth

and the coefficients of variation of different grain classes showed that sand < silt < clay. Along the slope contour direction

the coarseness of sample zone B was the weakest

and below the 10 cm layer

the coarseness of sample zone B was the strongest. Along the vertical slope contour direction

the content of sand (73.60%) increased by 6.90% (p<0.05) and 11.66% (p<0.05) in the middle of the slope compared with the top and bottom of the slope

respectively

while the content of silt (31.85%) and clay (3.10%) increased by 13.13% (p<0.05)

23.59% (p<0.05) and 4.36%

51.70% (p<0.05) in the bottom of the slope compared with the top and middle of the slope. The coarse granulation was the strongest in the middle of the slope

and the bottom of the slope was the main area for the accumulation of fine particles. The results of the study can strengthen the understanding of the spatial distribution pattern of soil particles on the slope of Pisha sandstone area.

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