数字滤波法在锡林河基流分割中的比较与应用

干旱区地理 ›› 2016, Vol. 39 ›› Issue (6): 1319-1326.

数字滤波法在锡林河基流分割中的比较与应用

宋小园¹, 朱仲元², 焦玮², 席小康², 郝祥云², 刘世利³

1 临沂大学土木工程与建筑学院, 山东临沂 276000;
2 内蒙古农业大学水利与土木建筑工程学院, 内蒙古呼和浩特 010018;
3 莒南县十字路水利服务中心, 山东临沂 276000

收稿日期:2016-04-19 修回日期:2016-07-28
通讯作者: 朱仲元(1956-),男,教授,博士生导师,主要从事水文水资源与天然植被需水方面的研究.Email:nmgzzy@tom.com
作者简介:宋小园(1986-),女,讲师,主要从事干旱区草原流域生态环境方面的研究.Email:yuanxiaosong123@126.com
基金资助:
国家自然科学基金（51269014）；内蒙古自治区自然科学基金（2013MS0607）

Comparison and application of digital filtering method in Xilinhe River of baseflow separation

SONG Xiao-yuan¹, ZHU Zhong-yuan², JIAO Wei², XI Xiao-Kang², HAO Xiang-yun², LIU Shi-Li³

1 Civil Engineering and Architecture College, Linyi University, Linyi 276000, Shandong, China;
2 Hydraulics and Cicvil Engineering College, Inner Mongolia Agricultural University, Hohhot 010018, Inner Mongolia, China;
3 Junan County Cross Water Service Center, Linyi 276600, Shandong, China

Received:2016-04-19 Revised:2016-07-28

摘要/Abstract

摘要： 以1974年锡林浩特水文站实测径流数据为例，通过Lyne-Hollick、Chapman、ChapmanMaxwell、Boughton-Chapman四种方法对其进行基流分割。一方面研究不同滤波方法滤波次数、滤波参数变化对基流分割结果的影响；另一方面确定流域基流分割的最优参数。结果表明：LyneHollick、Chapman、Chapman-Maxwell、Boughton-Chapman四种滤波法在锡林河基流分割中，拥有两个滤波参数的Boughton-Chapman滤波法分割基流的模拟效果最好，这是因为拥有两个滤波参数的数字滤波器与拥有一个参数的数字滤波器相比，其对总径流序列的高频信号的平滑作用更显著，所获得的地下径流序列更稳定，变化性更小。但其相比于单参数滤波法分割次数较多。对于单参数滤波方法中，Lyne-Hollick滤波法分割基流的模拟效果较好，Nash-Sutcliffe效率系数较接近于1，平均相对误差均<5%，Chapman和Chapman-Maxwell滤波法分割结果偏低，平均相对误差均>10%。

关键词: 基流分割, Lyne-Hollick滤波法, Chapman滤波法, Chapman-Maxwell滤波法, Boughton-Chapman滤波法

Abstract: Four filtering method of Lyne-Hollick(L1), Chapman(L2), Chapman-Maxwell(L3), Boughton-Chapman(L4)were used for baseflow separation based on the data from Xilinhot hydrological station at Inner Mongolia, China. The paper explored the influence of different filter frequency and filter parameters on baseflow separation results and selected the optimal parameters to provide some experience for baseflow separation. The results showed that Boughton-Chapman filtering method with two filtering parameters had the best simulation effect, and the optimal segmentation parameter of Boughton-Chapman was n=4, f=0.95, Nash-Sutcliffe efficiency coefficient was 0.975, the average relative error was -0.3%, but it needed more separation times than that of the other methods. In the single parameter filtering methods, the Lyne-Hollick method had better simulation effect for baseflow separation, and the optimal segmentation parameter of Lyne-Hollick was n=3, f=0.8, Nash-Sutcliffe efficiency coefficient was 0.974, the average relative error was 3.95%. The results of Chapman and Chapman-Maxwell methods were relatively lower, and the average relative errors were greater than 10%.

Key words: Baseflow separation, Lyne-Hollick, Chapman, Chapman-Maxwell, Boughton-Chapman

中图分类号:

P333

宋小园, 朱仲元, 焦玮, 席小康, 郝祥云, 刘世利. 数字滤波法在锡林河基流分割中的比较与应用[J]. 干旱区地理, 2016, 39(6): 1319-1326.

SONG Xiao-yuan, ZHU Zhong-yuan, JIAO Wei, XI Xiao-Kang, HAO Xiang-yun, LIU Shi-Li. Comparison and application of digital filtering method in Xilinhe River of baseflow separation[J]. , 2016, 39(6): 1319-1326.

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