地理科学进展 ›› 2011, Vol. 30 ›› Issue (3): 325-329.doi: 10.11820/dlkxjz.2011.03.010

• 地表过程 • 上一篇    下一篇

岔巴沟流域次暴雨坡面土壤侵蚀经验模型

陈晓安1, 蔡强国2, 郑明国2, 李君兰2   

  1. 1. 江西省水土保持科学研究所,南昌330029;
    2. 中国科学院地理科学与资源研究所陆地水循环与地表过程重点实验室,北京100101
  • 收稿日期:2010-10-01 修回日期:2011-01-01 出版日期:2011-03-25 发布日期:2011-03-25
  • 通讯作者: 蔡强国(1946-),男,湖北省武汉市人,博士,研究员,博士生导师,从事土壤侵蚀、水土保持、流域侵蚀产沙模拟研究。E-mail: caiqg@igsnrr.ac.cn E-mail:caiqg@igsnrr.ac.cn
  • 作者简介:陈晓安(1983-),男,安徽省南陵县人,硕士,助理工程师,研究方向为土壤侵蚀模型。E-mail: onlycxa@163.com
  • 基金资助:

    国家自然科学基金项目(40971165,40871138);黄河水利委员会治黄专项(黄水保200651-02)。

Empirical Soil Erosion Model for Single Rainstorm in Chabagou Drainage Basin

CHEN Xiaoan1, CAI Qiangguo2, ZHENG Mingguo2, LI Junlan2   

  1. 1. Institute of Soil andWater Conservation, Nanchang 330029;
    2. Institute of Geographic Sciences and Natural Resources Research, Key Laboratory ofWather Cycle & Related Land Surface Processes, CAS, Beijing 100101
  • Received:2010-10-01 Revised:2011-01-01 Online:2011-03-25 Published:2011-03-25

摘要: 坡面土壤流失预测、水保效益评估,无不需要坡面侵蚀模型。本文以岔巴沟流域坡面径流场降雨水文资料为基础,建立了次侵蚀性降雨坡面土壤侵蚀模型、次降雨坡面细沟侵蚀模型,并对各模型的精度进行了分析。结果发现模型具有较好的预报精度,对大侵蚀产沙事件预测很准;坡度、最大10 分钟雨强、植被覆盖度是影响次侵蚀性降雨主要因子,坡度、最大10分钟雨强、降雨量是影响细沟侵蚀主要因子,植被覆盖对细沟侵蚀产沙影响很小。

关键词: 岔巴沟流域, 次降雨, 土壤侵蚀模型

Abstract: Soil erosion model was not only important for soil erosion forecast, but also important for soil and water conservation performance evaluation. This paper established a mixed rainfall erosion model, an erosive rainfall erosion model and a rill erosion model, and analysed the accuracy of the soil erosion model, on the basis of hydrological data of rainfall in Chabagou drainage basin. The results showed that the model had a good prediction accuracy, and was quite accurate for a big sediment event. Slope, maximum rainfall intensity in 10 minutes and vegetation cover are the main factors for erosive rainfall. Slope, maximum rainfall intensity in 10 minutes and rainfall are the main factors for rill erosion, but vegetation cover has little effect on rill erosion.

Key words: Chabagou drainage basin, single rainstorm, soil erosion model