Splash Erosion Features of Three Red Soils in Poyang Lake Basin

LIU Yaojun; YANG Guangyong; XU Mingze; TANG Chongjun; YANG Jie

doi:10.13870/j.cnki.stbcxb.2019.02.009

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Splash Erosion Features of Three Red Soils in Poyang Lake Basin

更新时间：2025-03-12

- Splash Erosion Features of Three Red Soils in Poyang Lake Basin
- Vol. 33, Issue 2, Pages: 55-59(2019)
- 作者机构：
  
  1. 江西省水土保持科学研究院,南昌,330029
  2. 华中农业大学水土保持研究中心,武汉,430070
  3. 江西农业大学园林与艺术学院,南昌,330045
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2019.02.009
  CLC：
- Published：2019
- 稿件说明：
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LIU Yaojun, YANG Guangyong, XU Mingze, et al. Splash Erosion Features of Three Red Soils in Poyang Lake Basin[J]. 2019, 33(2): 55-59.
DOI：

LIU Yaojun, YANG Guangyong, XU Mingze, et al. Splash Erosion Features of Three Red Soils in Poyang Lake Basin[J]. 2019, 33(2): 55-59. DOI： 10.13870/j.cnki.stbcxb.2019.02.009.

摘要

为了研究鄱阳湖流域3种典型母质对土壤溅蚀的影响，设计一种可收集过程样的溅蚀盘，通过室内模拟降雨试验，分析不同降雨强度（30，60，90，120，150 mm/h）和母质（第四纪沉积物母质、花岗岩母质、红砂岩母质）条件下红壤溅蚀特征。结果表明：第四纪沉积物母质红壤总溅蚀量最低，其次是花岗岩母质红壤，红砂岩母质红壤总溅蚀量最高，土壤质地、有机质、游离氧化铁等指标对总溅蚀量影响较大；随着雨强的增大，总溅蚀量呈对数函数关系增加；总溅蚀量80%以上分布在0-15 cm范围内，随着雨强增大，溅蚀颗粒分布越集中。

Abstract

A process-collectable splash erosion plate was designed to analyze the impacts of parent materials on splash erosion in the Poyang lake basin. The simulated rainfall experiments were conducted with five rainfall intensities (30

120

150 mm/h) in this paper. The splash erosion features of red soils were studied under different parent materials including quaternary sediments (SQ)

granite (SG) and red sandstone (SR)

respectively. The results showed that the total splash erosion differed significantly between parent materials. SR was more sensitive to the rain drop and generated the highest splash erosion

but the value of SQ was the lowest. Soil texture

organic matter and free iron oxide were more effective to the splash erosion. The total splash erosion increased logarithmically with the increased rainfall intensities. Over 80% of the splash sediments were distributed within the distance of 15 cm

the more concentratedly with the higher rainfall intensities.

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