[1]安晓奇,郭成久,苏芳莉,等.土壤前期含水量对弃渣坡面侵蚀特性影响的模拟试验[J].水土保持研究,2009,16(06):116-119,124.
 AN Xiao-qi,GUO Cheng-jiu,SU Fang-li,et al.Simulation Experiment of Effect of Antecedent Soil Moisture Content on Characteristics of Soil Erosion from Dumping Soil Land[J].,2009,16(06):116-119,124.
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土壤前期含水量对弃渣坡面侵蚀特性影响的模拟试验()
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《水土保持研究》[ISSN:1005-3409/CN:61-1272/P]

卷:
16卷
期数:
2009年06期
页码:
116-119,124
栏目:
出版日期:
2099-01-01

文章信息/Info

Title:
Simulation Experiment of Effect of Antecedent Soil Moisture Content on Characteristics of Soil Erosion from Dumping Soil Land
作者:
安晓奇1 郭成久1 苏芳莉1 郎连山2 洪运亮1
1. 沈阳农业大学 水利学院, 沈阳 110161;
2. 辽宁省建昌县水利局, 辽宁 建昌 125300
Author(s):
AN Xiao-qi1 GUO Cheng-jiu1 SU Fang-li1 LANG Lian-shan2 HONG Yun-liang1
1. College of Water Resoures, Shengyang Agriculture University, Shengyang 110161, China;
2. Water Department of Jianchang Country, Jianchang, Liaoning 125300, China
关键词:
土壤前期含水量入渗弃渣场土壤侵蚀
Keywords:
antecedent soil moisture contentinfiltrationdumping pilesoil erosion
分类号:
S157.2
摘要:
利用室内人工模拟降雨试验,研究弃渣前期含水量在不同降雨强度条件下对土壤坡面入渗、产流和产沙特性的影响。结果表明:弃渣坡面入渗率随时间呈幂函数变化。在雨强较小(0.64 mm/min)的情况下,含沙率在产流初期会出现峰值,之后随时间递减,前期含水量越高,峰值出现的越早,土壤前期含水量对土壤侵蚀量的影响符合幂函数变化规律。在1.05 mm/min降雨强度条件下,含沙率变化呈波动性增长趋势,无明显峰值。土壤前期含水量对土壤侵蚀量影响呈二次多项式关系,计算得出土壤流失量最少的最优前期含水量为9.65%。
Abstract:
The effect of antecedent soil moisture content on characteristics of in filtration, runoff and sediment was investigated by rainfall simulation experiment of dumping soil.The results showed that: infiltration rate spoil slope power function with time changes, the higher the initial moisture content, the faster the runoff.However, under different rainfall conditions the laws well change.Rainfall intensity under 0.64 mm/min conditions, the rate of sediment runoff will peak early, diminishing with time, antecedent soil moisture content the higher, the earlier of peak. Rainfall intensity under 1.05 mm/min conditions, changes in sediment was the volatility of the rate of growth, no significant peak.The optimal antecedent soil moisture content values for minimization of soil losses is determined by the approximately parabola relations of soil losses and antecedent soil moisture content, which is 9.65%.

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备注/Memo

备注/Memo:
收稿日期:2009-5-31;改回日期:。
基金项目:辽宁省教育厅基金(2008Z213)
作者简介:安晓奇(1985- ),女,辽宁抚顺市人,硕士研究生,主要从事水土保持与土壤侵蚀规律模拟研究。E-mail:anxiaoqi920@yahoo.com.cn
通讯作者:郭成久(1964- ),男,辽宁省沈阳市人,教授,主要从事土壤侵蚀及其治理研究。E-mail:chengjiuguo11@163.com
通讯作者:郭成久(1964- ),男,辽宁省沈阳市人,教授,主要从事土壤侵蚀及
更新日期/Last Update: 1900-01-01