Analysis of Soil Erosion on Suining Group Parent Material After Closing Management

YANG Yuan-xiang; ZHU Xue-mei; SHAO Ji-rong; LIN Li-ji; WU Yong; JIANG Xiao-jun

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Analysis of Soil Erosion on Suining Group Parent Material After Closing Management

- Analysis of Soil Erosion on Suining Group Parent Material After Closing Management
- Bulletin of Soiland Water Conservation Vol. 26, Issue 1, Pages: 24-28(2007)
- 作者机构：
  
  1. 四川农业大学资源环境学院,四川,雅安,625014
  2. 四川农业大学生命科学与理学院,四川,雅安,625014
  3. 遂宁市水土保持试验站,四川,遂宁,629006
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2007
- 稿件说明：
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YANG Yuan-xiang, ZHU Xue-mei, SHAO Ji-rong, et al. Analysis of Soil Erosion on Suining Group Parent Material After Closing Management[J]. Bulletin of Soiland Water Conservation, 2007, 26(1): 24-28.
DOI：

YANG Yuan-xiang, ZHU Xue-mei, SHAO Ji-rong, et al. Analysis of Soil Erosion on Suining Group Parent Material After Closing Management[J]. Bulletin of Soiland Water Conservation, 2007, 26(1): 24-28. DOI：

摘要

通过遂宁市水土保持试验站母质侵蚀观测场长期连续观测试验

收集1991-2000年资料

采用数据分析方法

对遂宁组紫色土母质侵蚀规律进行了研究。结果表明:(1)母质侵蚀区在封禁10 a内的年际地表径流模数与年际降雨量变化趋势一致

而土壤侵蚀模数总体呈现逐年下降趋势;(2)径流深与降雨量呈正相关

与降雨时间呈负相关。(3)降雨量和平均降雨强度两因子对土壤侵蚀量影响不显著

土壤侵蚀量与地表径流深在封禁期前4 a内能建立回归方程。由此认为

采用封禁管理来防治紫色土母质侵蚀可行

封禁至少8 a以上土壤侵蚀强度类型才由剧烈侵蚀逐渐转化为轻度侵蚀。

Abstract

Through continuous field observation of soil erosion in the Soil and Water Conservation Station of Suining

processes of soil erosion on purple parent material of the Suining group were studied by collecting the data from 1991 to 2000 and using the method of data analysis.Results showed that annual runoff module from soil erosion plots on the parent material closed for 10 years changed with annual rainfall amount

but on the whole

annual soil erosion module had a tendency to decrease year by year.Runoff depth was positively related to rainfall amount

and inversely related to rainfall duration.A regression equation for the relationship between runoff depth and rainfall amount was established

and the critical rainfall amount that can induce runoff was found to be 15.85 mm.Rainfall amount and mean rainfall intensity did not significantly influence soil erosion amount.During the first 4 years

the regression equation could be formed between soil erosion amount and runoff depth

and the critical runoff depth that can induce a large amount of soil erosion was 9.05 mm.It is evident that the closing management may prevent and cure soil erosion on the purple parent material

and soil erosion gradually changes from severe degree to light degree after closing for at lest 8 years.

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