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| 降雨强度对含砾石土壤产沙及入渗的影响 | |
| 引用本文： | 吴冰,朱元骏,邵明安.降雨强度对含砾石土壤产沙及入渗的影响[J].水土保持学报,2011,25(6):87-91. |
| 作者姓名： | 吴冰 朱元骏 邵明安 |
| 作者单位： | 1. 西北农林科技大学资源环境学院,陕西,杨凌,712100 2. 西北农林科技大学水土保持研究所,黄土高原土壤侵蚀与干旱地农业国家重点实验室,陕西,杨凌,712100 3. 中国科学院地理科学与资源研究所,北京,100101 |
| 基金项目： | 国家自然科学基金(40801104) |
| 摘 要： | 通过室内模拟降雨研究降雨强度对含砾石土壤产沙及入渗的影响.结果表明:整个降雨过程中,60mm/h的降雨强度下,产沙率变化相对平稳,90 mm/h和120 mm/h的降雨强度下,土壤产沙率的变化均因为有细沟而产生波动,120 mm/h的降雨强度下,细沟出现的时间较90 mm/h的降雨强度提前了5～20min;降雨强度的增加导致土壤总产沙量也显著增加,当降雨强度从90 mm/h增加到120 mm/h时,总产沙量的增加量是降雨强度从60 mm/h增加到90 mm/h时总产沙量增加量的0.83～2.82倍;随着降雨强度的增加,土壤的入渗率有减小的趋势.Kostiakov模型和Horton模型均可以很好模拟3种降雨强度下含砾石土壤的入渗过程,而在60 mm/h的降雨强度下,Horton模型优于Kostiakov模型,在90 mm/h和120mm/h的降雨强度下,Kostiakov模型优于Horton模型. |
| 关 键 词： | 降雨强度 产沙率 入渗 含砾石土壤 |
Effect of Rainfall Intensity on Sediment Yield and Infiltration on Stony Soils |
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| WU Bing,ZHU Yuan-jun,SHAO Ming-an.Effect of Rainfall Intensity on Sediment Yield and Infiltration on Stony Soils[J].Journal of Soil and Water Conservation,2011,25(6):87-91. | |
| Authors: | WU Bing ZHU Yuan-jun SHAO Ming-an |
| Institution: | WU Bing1,ZHU Yuan-jun2,SHAO Ming-an3(1.College of Resources and Environment,Northwest A & F University,Yangling,Shaanxi 712100,2.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau,Institute of Soil and Water Conservation,3.Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101) |
| Abstract: | The sediment yield and infiltration are affected by rainfall intensity based on simulated rainfalls.The results showed that the sediment delivery rate changed smoothly under rainfall intensity of 60 mm/h and the sediment delivery rate fluctuated due to rill during rainfall,the appearance of rill need more time of 5~20 minutes under rainfall intensity of 90 mm/h than that under rainfall intensity of 120 mm/h,the total sediment yield was increased obviously with the addition of rainfall intensity,the increase... |
| Keywords: | rainfall intensity sediment delivery rate infiltration stony soil |
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