• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Annual International Meeting of the American Society of Agricultural and Biological Engineers >Variation in Runoff at Different Watershed Scales in the Hilly-gully Region on the Loess Plateau
【24h】

Variation in Runoff at Different Watershed Scales in the Hilly-gully Region on the Loess Plateau

机译：黄土高原丘陵沟壑区不同流域鳞片的径流变异

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

To identify the difference in runoff from watersheds of different scales is an important issue in hydrological science. The hydrologic data of Qiaozi West Watershed (QW, 1.09 km2), Lvergou Watershed (LEG, 12.01 km2) and Luoyugou Watershed (LYG, 72.79km2), collected from 1987 to 2010, were used to investigate the difference in runoff volumes from the watersheds at different time scales (annual scale and on event basis). According to the characteristic of the annual precipitation series, the study period was divided into four sub-periods, namely PI (1987—1993), P2 (1994—2002), P3 (2003—2007) and P4 (2008—2010). The precipitations had no significant difference between the average annual precipitation during PI and P3, but they were significantly higher than that during P2 and P4. The results indicated that there was the effect of spatial scale on the runoff from the watersheds. It is found that the annual runoff coefficients of watersheds increase with watershed size. There was no significant difference for the event-based runoff coefficients among QW, LEG and LYG. There were good rainfall-runoff relationships in the watersheds. The results can be used to improve the hydrological modeling.
机译：为了确定不同尺度的流域径流的差异是水文科学的重要问题。 1987年至2010年收集的乔佐西部（QW，1.09 km2），Lvergou流域（腿部，12.01 km2）和洛汇流域（Lyg，72.79km2），用于调查流域中径频卷的差异在不同的时间尺度（年度规模和事件基础上）。根据年降水系列的特点，研究期分为四个子期，即PI（1987-1993），P2（1994-2002），P3（2003-2007）和P4（2008-2010）。 PI和P3期间的年平均降量与P2和P4期间的年均降水量无显着差异。结果表明，流域径流存在空间尺度的影响。发现流域的年径流系数随身水平而增加。基于事件的径流系数没有显着差异，QW，腿和LYG之间的基于事件的径流系数。流域有良好的降雨径流关系。结果可用于改善水文建模。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号