Effects of Rainfall Pattern and Sugarcane Planting on Soil Erosion Characteristics of Lateritic Red Soil Slope

YANG Renxiang; QIU Fan; WANG Jianhua; XU Zhenxin; HUANG Xiakai; LI Guifang

doi:10.13870/j.cnki.stbcxb.2021.01.009

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Effects of Rainfall Pattern and Sugarcane Planting on Soil Erosion Characteristics of Lateritic Red Soil Slope

更新时间：2025-03-12

- Effects of Rainfall Pattern and Sugarcane Planting on Soil Erosion Characteristics of Lateritic Red Soil Slope
- Vol. 35, Issue 1, Pages: 65-70(2021)
- 作者机构：
  
  广西大学农学院,南宁,530004
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2021.01.009
  CLC： S157.1
- Published：2021
- 稿件说明：
移动端阅览
YANG Renxiang, QIU Fan, WANG Jianhua, et al. Effects of Rainfall Pattern and Sugarcane Planting on Soil Erosion Characteristics of Lateritic Red Soil Slope[J]. 2021, 35(1): 65-70.
DOI：

YANG Renxiang, QIU Fan, WANG Jianhua, et al. Effects of Rainfall Pattern and Sugarcane Planting on Soil Erosion Characteristics of Lateritic Red Soil Slope[J]. 2021, 35(1): 65-70. DOI： 10.13870/j.cnki.stbcxb.2021.01.009.

摘要

为探究南方高强度、高频次降雨下甘蔗种植对赤红壤坡面土壤侵蚀的影响，基于径流小区原位观测试验，分析不同种植方式下（顺坡和横坡）蔗地和裸坡坡面径流和侵蚀泥沙特征，探讨甘蔗种植方式对坡面侵蚀产沙的影响，获得影响赤红壤坡面侵蚀的主要雨型。结果表明：（1）坡面径流量和侵蚀量均表现为裸坡 > 顺坡蔗地 > 横坡蔗地，裸坡坡面径流量和侵蚀量是顺坡蔗地和横坡蔗地的1.7~5.3倍；顺坡蔗地坡面径流量和侵蚀量是横坡蔗地的1.9，2.3倍。（2）次降雨条件下，裸坡坡面径流量与侵蚀量均整体高于蔗地处理，而顺坡蔗地整体上大于横坡蔗地，但二者差异随甘蔗生长逐渐缩小。（3）A型雨（中历时、小雨强、小雨量）发生频次最高，但B型雨（短历时、大雨强、中雨量）是引起裸坡和顺坡蔗地坡面产流产沙的主要雨型，径流量和侵蚀量分别占总量的49.9%，57.6%和62.3%，64.2%；D型雨（长历时、极大雨强、极大雨量）是造成横坡蔗地坡面水土流失严重的主要雨型，由其产生的坡面径流量和侵蚀量分别占总量的49.5%和72.2%。研究结果可为明晰南方赤红壤区蔗地土壤侵蚀特征及防治提供理论依据。

Abstract

In order to explore the influence of sugarcane planting on the soil erosion of lateritic red soil slope under high intensity and high frequency rainfall in southern China

we based on the in-situ observation test of runoff plot

analyzed runoff and erosion characteristics of bare slope and sugarcane land that under different planting methods (down-slope and cross-slope)

and discussed the effects of sugarcane planting on slope erosion. At the same time

we obtained the main rainfall patterns that affecting the slope erosion of lateritic red soil. The results showed that: (1) The runoff amounts and sediment yields were both showed that bare slope > down-slope sugarcane planting slope > cross-slope sugarcane planting slope. The runoff amounts and sediment yields of bare slope were 1.7 ~ 5.3 times of the down-slope and cross-slope sugarcane planting slope. The runoff amount and sediment yield of down-slope sugarcane planting slope were 1.9 and 2.3 times of the cross-slope sugarcane planting slope. (2) Under different rainfall events

runoff amount and sediment yield of bare slope were higher than all sugarcane planting slopes

and the runoff amount and sediment yield of down-slope were larger than that of the cross-slope. However

the difference between the two sugarcane lands decreased with the sugarcane growth. (3) The highest frequency rainfall pattern was type A (mid duration

low rainfall intensity

low rainfall depth). However

type B (short duration

strong rainfall intensity and medium rainfall depth) was the main rainfall pattern that caused runoff and erosion in bare slope and down-slope sugarcane planting slope

the runoff and erosion accounted for 49.9%

57.6% and 62.3%

64.2%

respectively. Type D (long duration

extremely strong rainfall intensity and extremely great rainfall depth) was the main type that caused the soil and water loss in cross-slope sugarcane planting slope

and the runoff amount and sediment yield caused by the rain of type D accounted for 49.5% and 72.2% respectively. The results can provide a theoretical basis for clarifying the mechanism and control of soil erosion on the sugarcane land in the lateritic red soil region of southern China.

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