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中国沙漠 ›› 2005, Vol. 25 ›› Issue (6): 910-915.

• 研究论文 • 上一篇    下一篇

地面不同垄沟形式对径流调控机制的研究

孙玉泉1, 田媛2, 苏德荣3   

  1. 1. 甘肃省兰州市南北两山环境绿化指挥部, 甘肃兰州 730046;
    2. 北京工商大学化学与环境工程学院, 北京 100083;
    3. 北京林业大学环境与资源学院, 北京 100083
  • 收稿日期:2005-06-02 修回日期:2005-06-20 出版日期:2005-12-20 发布日期:2005-12-20
  • 作者简介:孙玉泉(1969-),男(汉族),甘肃临洮人,工程师。主要从事干旱区环境绿化研究。E-mail:s1969214@163.com
  • 基金资助:
    国家"973"计划课题(2002CB111502);中国科学院"西部之光"人才培养计划资助

Mechanism of Controlling Runoff for Different Ridge-Furrow Systems in Semiarid Region of China

SUN Yu-quan1, TIAN Yuan2, SU De-rong3   

  1. 1. Environmental Afforestattion Engineering Headquarters of South and North Mountain System in Lanzhou, Lanzhou 730046, China;
    2. School of Chemical and Environmental Engineering, Beijing Technology and Business University, Beijing 100083, China;
    3. School of Natural Resources and Environment, Beijing Forestry University, Beijing 100083, China
  • Received:2005-06-02 Revised:2005-06-20 Online:2005-12-20 Published:2005-12-20

摘要: 在干旱缺水、水土流失严重的黄土高原地区,地面垄沟是控制侵蚀、保持水分的有效措施。而不同垄沟形式将直接影响沟中径流量和土壤水分状况。本文设计了两种不同垄上覆盖材料和三种不同垄沟比的6组试验处理,通过2002与2003年降水季节的连续田间试验观测。结果表明:覆膜垄沟(MR)的临界产流降雨量低于不覆膜垄沟(ER),约为不覆膜垄沟(ER)的10%,两种垄沟的临界产流降雨量分别为0.4mm、4.6mm。覆膜垄沟(MR)的径流效率远高于不覆膜垄沟(ER),覆膜垄沟(MR)与土垄的平均径流效率分别在45%~70%与5%~6%之间变化。

关键词: 黄土高原, 垄沟, 垄沟比, 径流效率

Abstract: On the Loess Plateau of China where water stress and soil erosion is severe, ridge and furrow system(RFS) could be an effective measure to control soil erosion and retain rainfall.Different ridge and furrow systems directly affected the runoff quantity to the furrow and thus soil water condition.Six land surface designs of three kinds of ridge-to-furrow ratios combined with mulching or bare treatments were tested for two years.The experimental results showed that the critical rainfall for runoff occurring for the mulched ridges(MR) was 0.4 mm but for the bare ridges(BR) was 4.6 mm;the average runoff-collecting efficiency was 5%~6% for BR and 45%~70% for MR.

Key words: Chinese Loess Plateau, ridge and furrow system(RFS), bare ridge, mulched ridge, runoff-collecting efficiency

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