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
纸质出版:2022
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李华, 卢立华, 郑路, 等. 不同清理方式下人工幼林地的水土流失规律[J]. 水土保持通报, 2022,42(2):8-15.
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.
李华, 卢立华, 郑路, 等. 不同清理方式下人工幼林地的水土流失规律[J]. 水土保持通报, 2022,42(2):8-15. DOI: 10.13961/j.cnki.stbctb.2022.02.002.
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.
[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。
[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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