当前位置: 首页 > 文章 > 北盘江流域降雨量和径流量年际变化研究 水土保持研究 2010,17 (5) 30-34
Position: Home > Articles > Periodic Changes of the Annual Precipitation and Annual Natural Runoff in Beipan River Watershed Research of Soil and Water Conservation 2010,17 (5) 30-34

北盘江流域降雨量和径流量年际变化研究

作  者:
熊亚兰;王昌全;张科利;宁茂岐
单  位:
贵州省水土保持监测站;四川农业大学;地表过程与资源生态国家重点实验室
关键词:
小波变换;年降雨;年径流;周期
摘  要:
对北盘江流域的降雨和径流实测序列进行多尺度时频分析,可为喀斯特地区流域的综合治理、水资源的合理利用、水电设施设计标准的制定及地区的可持续发展提供保证,尤其对解决喀斯特地区的季节性干旱具有一定的指导意义。采用小波变换方法对北盘江流域年均降雨量和径流量的变化周期性进行分析,研究结果表明:北盘江流域1956-2000年降雨量和径流量均具有中等程度的变异,且径流量的增加速率大于降雨量;降雨和径流存在明显的年际和年代变化,且降雨量和径流量的变化周期具有同步性;降雨量的主周期依次为23,45,5,12 a,而23 a尺度的周期具有全局性;径流量的变化周期大致为24,6,13,40 a,而24 a尺度的周期具有全局性。
译  名:
Periodic Changes of the Annual Precipitation and Annual Natural Runoff in Beipan River Watershed
作  者:
XIONG Ya-lan1,WANG Chang-quan1,ZHANG Ke-li2,NING MAO-qi3(1.School of Natural Resources and Environmental Science,Sichuan Agriculture University,Ya'an,Sichuan 625014,China;2.State Key Laboratory of Earth Surface Processes and Resource Ecology,School of Geography and Remote Sensing Science,Beijing Normal University;Beijing 100875,China;3.Observation Station for Soil and Water Conservation of Guizhou Province,Guiyang 210093,China)
关键词:
wavelet transform;annual precipitation;annual natural runoff;periodic changes
摘  要:
Research on the multiple time-frequency analysis of annual precipitation and annual runoff is help to integrated manage of Karst area,efficiently use of water resources,constitute criterion of designing water and electricity establishment.This paper analyzes tendency and periods of annual precipitation and annual natural runoff in Beipan River watershed based on Morlet wavelet transform.The results showed: annual precipitation has middling variance and no obvious increase tendency from 1956-2000,but annual runoff has middling variance and obvious increase tendency;periodic changes of annual precipitation and annual runoff are isochronous;periods of precipitation is 23,45,5,12 years,and 23 years are overall;periods of runoff is 24,6,13,40 years,and 24 years are overall.

相似文章

计量
文章访问数: 8
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊