Soil Erosion Law of Young Plantations Under Different Forest Ground Clearing Methods

Li Hua; Lu Lihua; Zheng Lu; Li Chaoying; Ming Angang; Zhang Jihui; Liu Shiling; Shu Weiwei

doi:10.13961/j.cnki.stbctb.2022.02.002

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Soil Erosion Law of Young Plantations Under Different Forest Ground Clearing Methods

- Soil Erosion Law of Young Plantations Under Different Forest Ground Clearing Methods
- Bulletin of Soiland Water Conservation Vol. 42, Issue 2, Pages: 8-15(2022)
- 作者机构：
  
  1. 中国林业科学研究院热带林业试验中心, 广西凭祥,532600
  2. 广西友谊关森林生态系统国家定位观测研究站, 广西凭祥,532600
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2022.02.002
  CLC： S157.1
- Published：2022
- 稿件说明：
移动端阅览
Li Hua, Lu Lihua, Zheng Lu, et al. Soil Erosion Law of Young Plantations Under Different Forest Ground Clearing Methods[J]. Bulletin of Soiland Water Conservation, 2022, 42(2): 8-15.
DOI：

Li Hua, Lu Lihua, Zheng Lu, et al. Soil Erosion Law of Young Plantations Under Different Forest Ground Clearing Methods[J]. Bulletin of Soiland Water Conservation, 2022, 42(2): 8-15. DOI： 10.13961/j.cnki.stbctb.2022.02.002.

摘要

[目的] 研究不同清理方式下人工幼林地的水土流失规律，为人工林科学经营和生态管理提供科学依据。[方法] 在广西壮族自治区南部马尾松采伐迹地人工更新的林地上，基于2018—2020年野外径流小区定位观测数据，对比研究了炼山和不炼山两种林地清理方式下的水土流失规律。[结果] ①林地清理方式对水土流失的影响随炼山后林地恢复年限的增加急剧减小，但炼山后的前2 a，无论是按年、月统计的水土流失量，还是按场次降雨量统计的水土流失量，炼山均显著高于不炼山(p＜0.05)。②炼山降低了发生地表径流的最小降雨量。且随次降雨量的增加，炼山区域水土流失量的增加幅度明显大于不炼山区域。[结论] 在广西南部皆伐林地，炼山后的前2 a是水土流失发生的主要时期，也是防治水土流失的关键时期。

Abstract

[Objective] In order to provide a theoretical guidance for the ecological management of plantations

the soil erosion law of young plantations under different forest ground clearing methods were investigated. [Methods] Based on the observation data of runoff plot from 2018 to 2020

the soil erosion laws between two forest ground clearing methods (control burning and no burning) in a clear-cutting site of 30-year-old Pinus massoniana plantation in Southern Guangxi Zhuang Autonomous Region were compared. [Results] ① The impacts of forest ground clearing method on the soil erosion decreased sharply with the increase of forest land restoration after burning. In the first two years after control burning

the amount of soil erosion was significantly higher in the control burning plots than in the no burning plots (p＜0.05). ② Control burning reduced the minimum rainfall for surface runoff

and with the increase of rainfall amount

the soil erosion at burning plots was significantly greater than that at the no burning plots. [Conclusion] In the clear-cutting site of Southern Guangxi Zhuang Autonomous Region

the soil erosion was mainly occurred in the first two years after control burning

thus it is crucial to prevent soil erosion during this period.

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references

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