青海湖流域河川径流特征及其对降水的滞后效应

摘要/Abstract

摘要： 以青海湖流域的布哈河为例,采用变差系数、集中度和集中期等指标,对青海湖流域内径流量、降水量在年代、年际、季节等时间尺度上进行分析,并用集中期来反映河川径流对降水的滞后效应。结果显示,河川径流年内主要集中在6—10月,特别是7月中旬至8月中旬之间;降水主要集中在5—9月,特别是7月;径流量与降水量存在极大的相关性（r=0.746＞0.443=α0.001(47)）,径流对降水具有滞后效应,多年平均滞后时间为20 d左右。

关键词: 径流, 降水, 滞后效应, 集中期, 集中度, 青海湖流域

Abstract: The Buha River is the largest river in Qinghai Lake basin. In this paper, the variations of runoff and precipitation in decadal, annual and seasonal time scales are analyzed based on assessment indices of variation coefficient, concentration frequency and concentration period, also the hysteresis of runoff to precipitation is discussed with the Buha river as an example. Results show that runoff of the Buha River is mainly concentrated in period from June to October, especially from mid July to mid August, and precipitation in the Buha River Basin is mainly concentrated in period from May to September, especially in July; Relationship between runoff and precipitation is very significant (the significant level is larger than 0.001; r=0.746＞0.443=α0.001(47)); There is a hysteresis of runoff to precipitation, and the hysteresis period is about 20 days.

Key words: runoff, precipitation, hysteresis effect, concentration period, concentration frequentcy, Qinghai Lake basin

中图分类号:

P333

崔步礼;李小雁;李岳坦;马育军;伊万娟. 青海湖流域河川径流特征及其对降水的滞后效应[J]. 中国沙漠, 2011, 31(1): 247-253.

CUI Bu-li;LI Xiao-yan;LI Yue-tan;MA Yu-jun;YI Wan-juan. Runoff Characteristics and Hysteresis to Precipitation in the Qinghai Lake Basin: A case study of Buha river basin[J]. JOURNAL OF DESERT RESEARCH, 2011, 31(1): 247-253.

参考文献

[1]Jong C,Collins D,Ranzi R,et al.Climate and hydrology in Mountain Areas[M].Chichester,England: John Wiley & Sons Ltd,2005:1-306.
[2]Kang E S.Review and prospect of hydrological studies in cold and arid regions of China[J].Journal of Glaciology and Geocryology,2000,22(2):178-188.
[3]汤奇成,程天文,赵楚年,等.我国西北、华北地区地表径流量的估算及分析[J].资源科学,1981(2):41-49.
[4]汤奇成.西北地区河川径流年内分配的初步研究[J].地理科学,1986,6(1):48-55.
[5]康尔泗,程国栋,蓝永超,等.西北干旱区内陆河流域出山径流变化趋势对气候变化响应模型[J].中国科学,1996,29(增刊1):47-54.
[6]康尔泗,程国栋,董增川.中国西北干旱区冰雪水资源与出山径流[M].北京:科学出版社,2002.
[7]刘昌明.黄河流域水循环演变若干问题的研究[J].水科学进展,2004,15(5):608-614.
[8]王根绪,张钰,刘桂民,等.马营河流域1967—2000年土地利用变化对河流径流的影响[J].中国科学(D辑),2005,35(7):671-681.
[9]董晓辉,姚治君,陈传友.黄河源区径流变化及其对降水的响应[J].资源科学,2007,29(3):67-73.
[10]Jin X M,Hu G C,Li W M.Hysteresis effect of runoff of the Heihe River on vegetation cover in the Ejina Oasis in northwestern China[J].Earth Science Frontiers,2008,15(4):198-203.
[11]丁永建,刘凤景.近三十年来青海湖流域气候变化对水量平衡的影响及其趋势预测[J].地理科学,1995,15(2):128-136.
[12]Li X Y,Xu He Y,Sun Y L,et al.Lake-level change and water balance analysis at Lake Qinghai,West China during recent decades[J].Water Resource Management,2007,21:1505-1516.
[13]张家桢,刘恩宝,赵和,等.青海水文[M].北京:测绘出版社,1990.
[14]冯光扬.水文年内不均匀系数的探讨[J].山地研究,1991,9(1):27-32.
[15]汤奇成,程天文,李秀云.中国河川月径流的集中度和集中期的初步研究[J].地理学报,1982,37(4):383-393.
[16]杨远东.河川径流年内分配的计算方法[J].地理学报,1984,39(2):218-227.
[17]穆兴民,李靖,王飞,等.基于水土保持的流域降水——径流统计模型及其应用[J].水利学报,2004,5(7):122-128.
[18]Dawdy D R,Bergman J M.Effect of rainfall variability on streamflow simulation[J].Water Resources Research,1969,5:958-966.
[19]李小雁,许何也,马育军,等.青海湖流域土地利用/覆被变化研究[J].自然资源学报,2008,23(2):285-296.