Spatial Differentiation of Soil Erosion on Typical Loess Hill Slope in Loess Hilly and Gully Region

LIU Jia-xin; LIU Pu-ling; LIU Dong; ZHANG Ning-ning

doi:10.13961/j.cnki.stbctb.2014.04.015

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Spatial Differentiation of Soil Erosion on Typical Loess Hill Slope in Loess Hilly and Gully Region

- Spatial Differentiation of Soil Erosion on Typical Loess Hill Slope in Loess Hilly and Gully Region
- Bulletin of Soiland Water Conservation Vol. 33, Issue 4, Pages: 1-4(2014)
- 作者机构：
  
  1. 西北农林科技大学水土保持研究所, 陕西杨凌,712100
  2. 中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西杨凌,712100
  3. 重庆水利电力职业技术学院,重庆,402160
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2014.04.015
  CLC：
- Published：2014
- 稿件说明：
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LIU Jia-xin, LIU Pu-ling, LIU Dong, et al. Spatial Differentiation of Soil Erosion on Typical Loess Hill Slope in Loess Hilly and Gully Region[J]. Bulletin of Soiland Water Conservation, 2014, 33(4): 1-4.
DOI：

LIU Jia-xin, LIU Pu-ling, LIU Dong, et al. Spatial Differentiation of Soil Erosion on Typical Loess Hill Slope in Loess Hilly and Gully Region[J]. Bulletin of Soiland Water Conservation, 2014, 33(4): 1-4. DOI： 10.13961/j.cnki.stbctb.2014.04.015.

摘要

选择黄土高原丘陵沟壑区典型峁坡

采用

137

Cs示踪技术

通过对不同坡向和坡位土样

137

Cs含量的测定

分析了峁坡

137

Cs空间分布特征及土壤侵蚀的空间分异。结果表明

不同坡向峁坡侵蚀差异明显

各坡向平均侵蚀速率大小依次为:北坡 > 西南坡 > 东北坡 > 西坡 > 西北坡 > 南坡 > 东南坡 > 东坡

各坡向侵蚀强度均表现为强度侵蚀;峁坡各坡向不同坡位的侵蚀差异也非常明显

坡下部侵蚀量最大

坡面中上部次之。侵蚀速率顺坡呈波动变化趋势

且侵蚀强度表现为中度、强度以及极强度侵蚀

以强度侵蚀为主。

Abstract

The spatial distribution of 137Cs and the spatial differentiation of soil erosion on typical loess hill slope in the loess hilly and gully region was analyzed by using 137Cs tracer technique to determine the content of 137Cs in different slope aspect positions. The results showed that there were obvious differences of erosion between different slope aspects. The order of the average erosion rate was as follows: north slope > southwest slope > northeast slope > west slope > northwest slope > south slope > southeast slope > east slope and all the slopes were characterized by strong erosion. Moreover

the erosion rates in different slope positions of the same slope aspect showed significant differences

the erosion amount in lower part of the slope was the maximum and less in the upper slope. Overall

the erosion rate showed a trend of fluctuations along the slope

and the erosion intensity was mainly characterized by medium

strong and extremely strong and most of them was strong.

关键词

Keywords

references

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