| 伊犁河流域坡面径流侵蚀试验研究 |
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| 引用本文： | 马萍,罗青红,宋锋惠,王健,朱首军.伊犁河流域坡面径流侵蚀试验研究[J].西北林学院学报,2010,25(3):54-58. |
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| 作者姓名： | 马萍 罗青红 宋锋惠 王健 朱首军 |
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| 作者单位： | 西北农林科技大学资源环境学院;新疆林业科学研究院治沙所; |
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| 基金项目： | 国家科技支撑计划项目"伊犁河谷水土流失综合治理关键技术开发与示范" |
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| 摘 要： | 通过野外径流小区实地放水冲刷试验,研究伊犁河流域大豆坡地与裸地在不同放水条件下土壤水分变化及大豆减流减沙效应,并运用水力学理论分析坡面径流水力学参数特征。结果表明:大豆与裸地土壤入渗率随放水流量的增加呈现递增的趋势,与裸地相比,大豆坡面入渗率增加20%,产沙时间晚于裸地8 min左右;大豆坡面较裸地具有显著的减流减沙效应,输沙率减少93.6%,径流系数减少63.5%左右,其削减径流作用明显弱于减沙效应;随着放水流量的增加,大豆与裸地输沙率均呈递增趋势;坡面径流平均流速、径流深、雷诺数、Darcy-Weisbach阻力系数逐渐增大,弗劳德数逐渐减小,流速与流量呈幂函数关系,水流为层流、急流状态。
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| 关 键 词： | 放水冲刷 坡面 土壤水分 减流减沙 水力学参数 |
Runoff and Sediment Production on Slope Land in Ili River Basin |
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| MA Ping,LUO Qing-hong,SONG Feng-hui,WANG Jian,ZHU Shou-jun.Runoff and Sediment Production on Slope Land in Ili River Basin[J].Journal of Northwest Forestry University,2010,25(3):54-58. |
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| Authors: | MA Ping LUO Qing-hong SONG Feng-hui WANG Jian ZHU Shou-jun |
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| Institution: | MA Ping1,LUO Qing-hong2,SONG Feng-hui2,WANG Jian1,ZHU Shou-jun1(1.College of Resources , Environment,Northwest A&F University,Yangling,Shaanxi 712100,China,2.Xinjiang Academy of Forestry Science,Urumqi,Xinjiang 830000,China) |
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| Abstract: | Based on the water scouring experiment on soybean planted slope and bear slope in Ili River Basin,water infiltration and the effects of runoff and sediment reduction were investigated,and the hydraulic parameter characteristics of runoff were analyzed.The results showed that soil infiltration rate increased with the increase of the flow discharge both in soybean planted and bear slope.Compared to the bear soil,water infiltration rate in soybean planted slope increased by 20%,and sediment production delayed ... |
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| Keywords: | water scouring slope land soil water runoff and sediment reduction hydraulic parameters |
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