[1]熊维彬,陈志强,陈志彪,等.南方典型红壤区不同枯死率芒萁的水土流失阻控效应[J].水土保持研究,2024,31(02):76-83.
　Xiong Weibin,Chen Zhiqiang,Chen Zhibiao,et al.Effect of Dicranopteris pedata with Different Mortality on Soil and Water Loss Control in Typical Red Soil Region of Southern China[J].Research of Soil and Water Conservation,2024,31(02):76-83.
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南方典型红壤区不同枯死率芒萁的水土流失阻控效应

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 31 期数: 2024年02期 页码: 76-83 栏目: 出版日期: 2024-03-20
Title:
Effect of Dicranopteris pedata with Different Mortality on Soil and Water Loss Control in Typical Red Soil Region of Southern China
文章编号:
1005-3409(2024)02-0076-08
作者:
熊维彬1,2, 陈志强1,2, 陈志彪1,2, 尚艳琼1,2, 冯柳俊1,2, 李玮晔1,2
(1.福建师范大学 地理科学学院/碳中和未来技术学院, 福州 350007; 2.湿润亚热带山地生态国家重点实验室培育基地, 福州 350007)
Author(s):
Xiong Weibin1,2, Chen Zhiqiang1,2, Chen Zhibiao1,2, Shang Yanqiong1,2, Feng Liujun1,2, Li Weiye1,2
(1.College of Geographic Sciences/College of Carbon Neutral Future Technology, Fujian Normal University, Fuzhou 350007, China; 2.Key Laboratory for Subtropical Mountain Ecology, Ministry of Science and Technology, Fuzhou 350007, China)
关键词:
模拟降雨;  芒萁;  产流产沙;  水土流失;  南方典型红壤区
Keywords:
simulated rainfall;  Dicranopteris pedata;  runoff and sediment yield;  soil and water loss;  typical red soil region of southern China
分类号:
S157.1
文献标志码:
A
摘要:
[目的]探究芒萁植丛不同枯死率(100%,50%和0%)下坡面的产流产沙规律,揭示不同生长状态下芒萁的水土流失阻控效果。[方法]采用人工模拟降雨试验,对不同芒萁枯死率下坡面产流产沙过程随雨强的变化特性进行了定量分析。[结果](1)不同降雨强度和芒萁枯死率下径流速率随降雨历时呈前期缓慢或快速增长,后期趋于稳定。较小雨强下,侵蚀速率除裸坡外随降雨历时呈前期缓慢增加、后期趋于稳定状态; 较大雨强下,侵蚀速率随降雨历时变化呈前期快速增加,中后期逐渐下降趋于稳定。(2)除2 mm/min雨强下的累积产流量外,其余处理条件下累积产流产沙量差异明显,且产沙量随芒萁枯死率的增加而增加。(3)两种雨强不同处理下坡面累积产流量和累积产沙量关系符合幂函数模型(R2>0.99)。[结论]两种雨强芒萁植丛不同枯死率下径流速率和侵蚀速率随降雨历时变化前期迅速增加、后期逐渐波动稳定,各处理下累积径流量与累积产沙量的函数关系拟合回归效果良好,证实了枯死芒萁亦可在中国南方红壤侵蚀区起到良好的水土流失阻控效果。
Abstract:
[Objective] The aims of this study are to investigate the regularities of runoff and sediment yield on the slope of Dicranopteris pedata under different dead rates(100%, 50% and 0%), and to reveal the effect of Dicranopteris pedata under different growth conditions on soil erosion control. [Methods] The variation characteristics of runoff and sediment yield on the slope with different dead rates of Dicranopteris pedata were quantitatively analyzed through artificial simulated rainfall experiments. [Results](1)The runoff rate under different rainfall intensity and dead rate of Dicranopteris pedata increased slowly or rapidly in the early stage, and tended to be stable in the late stage. Under the light rainfall intensity, the erosion rate, except for bare slope, increased slowly in the early stage and tended to be stable in the later stage. Under the high rainfall intensity, the erosion rate increased rapidly in the early stage, and gradually decreased and stabilized in the middle and late stage.(2)Except for the cumulative runoff under 2 mm/min rainfall intensity, the cumulative runoff and sediment yield were significantly different under the other treatment conditions, and the sediment yield increased with the increase of the dead rate of Dicranopteris pedata.(3)The relationship between cumulative runoff and cumulative sediment yield on the slope under different rainfall intensities conformed to the power function model(R2>0.99). [Conclusion] The runoff rate and erosion rate increased rapidly in the early stage and fluctuated steadily in the later stage with the change of rainfall duration under the different mortality rates of Dicranopteris pedata plantation with two kinds of rainfall intensities. A good regression effect is obtained by fitting the functional relationship between cumulative runoff and cumulative sediment yield under each treatment. It is proved that the dead Dicranopteris pedata can also play a good role in soil and water loss control in the red soil erosion area in southern China.

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备注/Memo

收稿日期:2023-05-06 修回日期:2023-05-27
资助项目:福建省自然科学基金(2020J01143); 福建省水利科技项目(MSK202201)
第一作者:熊维彬(1998—),男,贵州毕节人,硕士研究生,研究方向为水土保持与生态修复。E-mail:QSX20221047@163.com
通信作者:陈志强(1978—),男,福建莆田人,博士,教授,主要从事自然资源与生态修复研究。E-mail:soiltuqiang061@163.com

更新日期/Last Update: 2024-04-20