|本期目录/Table of Contents|

[1]刘 泉,任三强,黄文军.基于SCS-CN模型的陕南地区坡地径流预测[J].绵阳师范学院学报,2016,(11):84-90.
 LIU Quan,REN Sanqiang,HUANG Wenjun.Runoff Estimation in Hillslope Cropland of the Southern Shaanxi Area based on SCS-CN Model[J].Journal of Mianyang Normal University,2016,(11):84-90.
点击复制

基于SCS-CN模型的陕南地区坡地径流预测(PDF)
分享到:

《绵阳师范学院学报》[ISSN:1672-612X/CN:51-1670/G]

卷:
期数:
2016年11期
页码:
84-90
栏目:
地理与资源环境科学
出版日期:
2016-11-15

文章信息/Info

Title:
Runoff Estimation in Hillslope Cropland of the Southern Shaanxi Area based on SCS-CN Model
文章编号:
1672-612x(2016)11-0084-07
作者:
刘 泉1任三强2黄文军1
1. 绵阳师范学院资源环境工程学院,四川绵阳 621006;
2. 石泉县水利局,陕西安康 725200
Author(s):
LIU Quan1 REN Sanqiang2 HUANG Wenjun1
1. The College of Resources and Environment, Mianyang Teachers' College, Mianyang Sichuan 621006;
2.Shiquan County Water Resources Bureau, Ankang Shaanxi 725200
关键词:
SCS-CN 模型 径流预测 初损系数 陕南地区
Keywords:
SCS-CN model runoff forecast initial abstraction ratio southern Shaanxi area
分类号:
S157.1; P33
DOI:
-
文献标志码:
A
摘要:
地表径流是引起坡面土壤和养分流失的主要动力,寻求有效途径对降雨径流进行科学预测,是陕南地区农业面源污染防治的基础.本文选取后沟小流域8个不同坡度和面积的径流小区,结合2011-2012年汛期的6场降雨产流的实测数据,评价陕南地区坡耕地基于SCS-CN 模型的适用性,并考虑降雨量影响的基础上对径流曲线数CN和初损系数Iα进行修正.结果表明,陕南地区小流域坡耕地初损参数λ为 0.1~0.4.随着Iα的变化对CN进行修正,确定CN值为58.选取的8个径流小区中,利用SCS-CN模型的模拟效果较好,径流量模拟值变化趋势与实测值一致,降雨径流量模拟值与实测值进行相关分析,计算得到两者的相关性均达到极显著相关.6场降雨事件径流模拟值与实测值分别为8 082.3 L和7 419.8 L,相对误差为 8.8%.该研究结果可为陕南地区降雨径流预测及面源污染防治提供参考.
Abstract:
Overland runoff is a main factor causing soil and nutrient loss on the slope cropland, so seeking a scientific and effective way to predict rainfall runoff is the base of agricultural non-point source pollution prevention and control in southern Shaanxi area. This paper selects the Hougou small catchment which has eight runoff plots with different slope gradients and size,the measured data of 6 rainfalls in flood season of 2011-2012 to evaluate the applicability of the SCS-CN model on cultivated sloping land in southern Shaanxi while to correct the CN(Runoff Curve Number)and Ia(initial loss coefficient)based on the consideration of the influence of rainfall volume. The results show that the λ(initial abstraction ratio)is 0.1~0.4 in southern Shaanxi area. With the change of Iα,the CN is modified and determined the CN value is 58. The results of 6 times simulated rainfall with SCS-CN model are good and the runoff simulation trend values and the measured values are basically the same in selected eight runoff plots. The correlation analysis between the simulated values and measured values of the 6 typical rainfalls is carried out, and the correlation between them is very significant. The total runoff of measured value and simulation value of 6 rainfall events is 7 419.8 L and 8 082.3L, respectively, the relative error is 8.8%.This research results can provide references for the rainfall runoff forecast and non-point source pollution control in southern Shaanxi area.

参考文献/References:

[1] 张春玲,李娅妮.陕西省丹汉江流域水质现状及防护对策[J].水资源与水工程学报,2007,18(3):87-90.
[2] 王星,李占斌,李鹏,等.陕西省丹汉江流域面源污染现状及防治对策[J].水土保持通报,2011,31(6):186-189.
[3] 符素华,刘宝元,吴敬东,等.北京地区坡面径流计算模型的比较研究[J].地理科学,2002,22(5):604-609.
[4] Wu T H,Hall J A,Bonta J V.Evaluation of runoff and erosion models[J].Journal of the Irrigation and Drainage Engineering,1993,119(2):364-382.
[5] Mishra S K,Tyagi J V,Singh V P,et al.SCS-CN-based modeling of sediment yield[J].Journal of Hydrology,2006,324(1/4):301-322.
[6] 陈正维,刘兴年,朱波.基于SCS-CN模型的紫色土坡地径流预测[J].农业工程学报,2014,30(7):72-81.
[7] Mockus V.Estimation of total(and peak rates of)surface runoff for individual storms.In:Interim Survey Report Grand(Neosho)River Watershed[M].Exhibit A of Appendix B.U.S.Dep.Agric.(U.S.Gov.print.Office:Washington,D.C),1949.
[8] 李常斌,秦将为,李金标.计算CN值及其在黄土高原典型流域降雨-径流模拟中的应用[J].干旱区资源与环境,2008,22(8):67-70.
[9] 贺宝根,周乃晟,高效江,等.农田非点源污染研究中的降雨径流关系-SCS法的修正[J].环境科学研究,2001,14(3):49-52.
[10] 房孝铎,王晓燕,欧洋.径流曲线数法(SCS法)在降雨径流量计算中的应用[J].首都师范大学学报(自然科学版),2007,28(1):89-92.
[11] 刘泉,李占斌,李鹏,等.汉江水源区生态沟渠对径流氮、磷生态拦截效应研究[J].水土保持通报,2016,36(2):54-58.
[12] Liu Q,Li Z B,Li P.Effect of runoff dynamic on sediment and nitrogenlosses in an agricultural watershed of the southern Shaanxi Region,China[J].CLEAN-Soil,Air,Water,2014,42(1):56-63.

相似文献/References:

备注/Memo

备注/Memo:
基金项目:四川省教育厅项目(16ZB0311); 中国博士后科学基金项目(2014M562338); 绵阳师范学院博士科研启动项目(QD2014A002); 绵阳师范学院青年基金项目(2013B09).
作者简介:刘泉(1978-),男,江苏丰县人,博士,副教授,研究方向:土壤侵蚀与水土保持.
更新日期/Last Update: 2016-11-15