| 胶东山丘区典型流域径流年内分配特征量化研究 |
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| 引用本文： | 刘德林,刘贤赵,李嘉竹,宿庆.胶东山丘区典型流域径流年内分配特征量化研究[J].山地学报,2007,25(3):295-301. |
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| 作者姓名： | 刘德林 刘贤赵 李嘉竹 宿庆 |
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| 作者单位： | 1. 鲁东大学地理与规划学院.山东,烟台,264025
2. 鲁东大学图书馆,山东,烟台,264025 |
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| 摘 要： | 采用M ann-Kendall法和最小方差法,对大沽夹河流域1966~2004年逐月实测径流数据进行均值变点分析。根据分析结果,将径流划分为水文变化特征相似的A(1966~1971年)、B(1972~1981年)、C(1982~1996年)、D(1997~2004年)4个时段。在此基础上借鉴年降水年内分配的向量法,提出了量化径流年内分配的集中度和集中期。结果表明:1.大沽夹河的不同水文年,其径流年内分配的特征不同。时段A集中度最小,时段D最大,4个时段变差系数为0.12。时段A和时段C的集中期比较接近,最大径流出现的时间均在7月下旬,时段B和时段D的集中期比较相似,最大径流出现的时间在8月中下旬。径流年内分配与降水年内分配两者呈显著正相关。2.用月径流量计算的集中度比径流年内不均匀系数具有更高的分辨能力和有效性,用月径流量计算的集中期对应的月份与月径流最大值出现的实际月份完全一致,径流集中度、集中期能够充分定量地表征径流在年内分配的非均匀性。
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| 关 键 词： | 径流年内分配 Mann-kendall法 径流集中度 径流集中期 不均匀系数 |
| 文章编号： | 1008-2786-（2007）3-295-07 |
| 修稿时间： | 2006-12-012007-03-20 |
A Quantification Study on Distribution Characteristics of Inner Yearly Runoff of the Representative Drainage Basin in Jiaodong Massif Area |
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| LIU Delin,LIU Xianzhao,LI Jiazhu,SU Qing.A Quantification Study on Distribution Characteristics of Inner Yearly Runoff of the Representative Drainage Basin in Jiaodong Massif Area[J].Journal of Mountain Research,2007,25(3):295-301. |
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| Authors: | LIU Delin LIU Xianzhao LI Jiazhu SU Qing |
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| Institution: | 1. College of Geography and Plan,Ludong University, Yantai 264025, China ; 2. Library of Ludong University, Yantai 264025, China |
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| Abstract: | Mann-Kendall and minimum variance methods are used in this study to analyze the mean value change-point of the runoff data observed by Fu-Shan hydrological station in Dagujia River basin from 1966 to 2004.Based on the calculated results,the runoff time series is divided into four periods A(1966~1971),B(1972~1981),C(1982~1996) and D(1997~2004) with the similar hydrological variation characteristics.Runoff-concentration degree(RCD)and runoff-concentration period(RCP)were put forward by means of vector composition computing annual distribution of yearly precipitation.The results indicated that are follow:(1) The inner annual runoff distribution characteristics in the Dagujia River basin were different under the condition of different hydrology year.The RCD of period A was least and the RCD of period D was most.The change-variation coefficient was 0.12 at the four periods.The RCP of period A was very close to period C,the runoff maximum appeared at the last ten-day of July.The period B was very similar to the period D in RCP,the runoff maximum appeared at the middle ten days or the last ten-day of August;(2) The RCD calculated by monthly runoff volume was higher resolving power and validity than that of non-uniform coefficient denoting annual runoff distribution.The month corresponding runoff concentration period computed by monthly runoff was closely consistent with actual month that maximum of monthly runoff appeared.It was proved that runoff concentration degree and concentration period could well display the non-uniformity in the annual distribution of runoff. |
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| Keywords: | annual runoff distribution Mann-Kendall method runoff concentration degree runoff concentration period non-uniform coefficients |
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