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| 1952-2008年延河流域降水与径流的变化趋势分析 | |
| 引用本文： | 邱临静,郑粉莉,尹润生.1952-2008年延河流域降水与径流的变化趋势分析[J].水土保持学报,2011,25(3):49-53. |
| 作者姓名： | 邱临静 郑粉莉 尹润生 |
| 作者单位： | 1. 西北农林科技大学林学院,陕西杨凌,712100 2. 西北农林科技大学林学院,陕西杨凌712100;中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西杨凌712100 3. 密歇根州立大学林学系,美国密歇根兰辛48824 |
| 基金项目： | 科技部“973计划”项目(2007CB407201); 农业部“948”项目(2010-S16) |
| 摘 要： | 利用延河流域控制站甘谷驿水文站流量实测数据及流域内5个县级气象站降水观测数据,分析了1952-2008年间甘谷驿水文站以上延河流域降水与径流的年内、年际变化特征,并运用滑动平均法、Mann-Kendall趋势检验法和Sen斜率估计法对延河流域降水、径流的变化趋势进行了分析。结果表明,延河流域汛期降水量和径流量分别占全年降水量和径流量的72%和64%。20世纪50年代至90年代,径流变化过程基本与降水过程一致,但到了21世纪初期,降水量呈先升后降的变化趋势,而径流量呈下降趋势。1952-2008年间流域降水量呈微弱的减少趋势,而冬季降水却以0.18mm/a的幅度显著递增。甘谷驿站汛期径流量以99.25万m3/a幅度显著降低。从径流的季节变化上来看,春季降低趋势不显著;夏秋两季径流分别以83.83万m3/a和26.16万m3/a的幅度显著减少;而冬季径流以15.62万m3/a的幅度显著增加。虽然相关分析表明降水变化与径流变化有较好的相关关系,但人类活动对径流的影响不容忽视。 |
| 关 键 词： | 延河流域 降水 径流 Mann-Kendall趋势检验法 Sen斜率估计法 |
Trend Analysis of Precipitation and Streamflow during 1952-2008 in Yanhe River Basin |
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| QIU Lin-jing,ZHENG Fen-li,YIN Run-sheng.Trend Analysis of Precipitation and Streamflow during 1952-2008 in Yanhe River Basin[J].Journal of Soil and Water Conservation,2011,25(3):49-53. | |
| Authors: | QIU Lin-jing ZHENG Fen-li YIN Run-sheng |
| Institution: | QIU Lin-jing1,ZHENG Fen-li1,2,YIN Run-sheng3(1.College of Forestry,Northwest A & F University,Yangling,Shaanxi 712100,2.State Key Laboratory of Soil Erosion and Dryland Farming in Loess Plateau,Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,3.Department of Forestry,Michigan State University,East Lansing,Michigan,U.S.A.48824) |
| Abstract: | Based on the measured streamflow data at Ganguyi hydrological station and the precipitation data of five meteorological stations in Yanhe river basin,annual,seasonal precipitation and streamflow were analyzed for the period of 1952-2008,and the Moving average method,Mann-Kendall test and Sen slope method were employed to detect the long-term change of precipitation and streamflow during the study period.The results showed that the precipitation and streamflow in flood season account for 72% and 64% of avera... |
| Keywords: | Yanhe river basin precipitation streamflow Mann-Kendall test Sen slope method |
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