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重庆缙云山典型林地地表径流水力学参数研究

申云康 齐实 郭建超 吴俊林 黄媛

申云康, 齐实, 郭建超, 吴俊林, 黄媛. 重庆缙云山典型林地地表径流水力学参数研究[J]. 北京林业大学学报, 2015, 37(7): 94-101. doi: 10.13332/j.1000-1522.20140422
引用本文: 申云康, 齐实, 郭建超, 吴俊林, 黄媛. 重庆缙云山典型林地地表径流水力学参数研究[J]. 北京林业大学学报, 2015, 37(7): 94-101. doi: 10.13332/j.1000-1522.20140422
SHEN Yun-kang, QI Shi, GUO Jian-chao, WU Jun-lin, HUANG Yuan. Hydraulic parameters of surface runoff in typical forest sites of Jinyun Mountain, Chongqing City of southwestern China[J]. Journal of Beijing Forestry University, 2015, 37(7): 94-101. doi: 10.13332/j.1000-1522.20140422
Citation: SHEN Yun-kang, QI Shi, GUO Jian-chao, WU Jun-lin, HUANG Yuan. Hydraulic parameters of surface runoff in typical forest sites of Jinyun Mountain, Chongqing City of southwestern China[J]. Journal of Beijing Forestry University, 2015, 37(7): 94-101. doi: 10.13332/j.1000-1522.20140422

重庆缙云山典型林地地表径流水力学参数研究

doi: 10.13332/j.1000-1522.20140422
基金项目: 

高等学校博士学科点专项科研基金(20130014110009)

详细信息
    作者简介:

    申云康。主要研究方向:水土保持与荒漠化防治、生态环境治理。Email:shenyk08@gmail.com 地址:100083 北京市清华东路35号北京林业大学水土保持学院。

    责任作者:

    齐实,教授,博士生导师。主要研究方向:水土保持与荒漠化防治、生态环境治理。Email:qishi@bjfu.edu.cn 地址:同上。

Hydraulic parameters of surface runoff in typical forest sites of Jinyun Mountain, Chongqing City of southwestern China

  • 摘要: 为揭示重庆缙云山森林植被的水文生态过程,选取裸地、针阔混交林、常绿阔叶林和楠竹林4种不同土地利用类型,采用放水冲刷径流试验方法,设计0.12、0.18、0.24、0.30、0.36L/min 5种不同的流量,测定蓄满产流下的地表径流水力学参数。结果表明:1)在放水冲刷条件下,4种地类径流阻力系数随流量的增大而降低,说明地表枯落物、有机质和根系能有效增加坡面糙度和阻力;随着流量的增大,径流冲走枯落物和有机质并形成细沟,浅层根系对径流的阻力效果增强,而根系较深的地类其阻力系数逐渐趋近于裸地的;2)4种不同地类的流速随着流量的增加而增加,地表枯落物和植物根茎对流速有减缓作用,且在大流量情况下,楠竹林根系对流速的消减作用更明显;3)在试验条件下,随着流量的增加,雷诺数持续增加,其径流特性由层流向紊流转变;弗劳德数先减小后增加,流量在0.18~0.30L/min之间取得弗劳德数的最小值。相同流量下,雷诺数和弗劳德数的大小顺序均为裸地>针阔混交林>常绿阔叶林>楠竹林。

     

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出版历程
  • 收稿日期:  2014-11-24
  • 修回日期:  2014-11-24
  • 刊出日期:  2015-07-31

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