[1]白桦,穆兴民,高鹏,等.嘉陵江流域降水及径流演变规律分析[J].水土保持研究,2012,19(01):102-106.
　BAI Hua,MU Xing-min,GAO Peng,et al.Analysis on Spatio-temporal Variation of Precipitation and Streamflow in the Jialingjiang River Basin[J].Research of Soil and Water Conservation,2012,19(01):102-106.
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嘉陵江流域降水及径流演变规律分析

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 19 期数: 2012年01期 页码: 102-106 栏目: 出版日期: 2012-02-20
Title:
Analysis on Spatio-temporal Variation of Precipitation and Streamflow in the Jialingjiang River Basin
作者:
白桦1, 穆兴民1,2, 高鹏1,2, 王飞1,2
1. 西北农林科技大学, 陕西 杨凌 712100;
2. 中国科学院 水利部 水土保持研究所, 陕西 杨凌 712100
Author(s):
BAI Hua1, MU Xing-min1,2, GAO Peng1,2, WANG Fei1,2
1. Northwest A&F University, Yangling, Shaanxi 712100, China;
2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China
关键词:
演变规律; 降水; 径流; 嘉陵江; 人类活动
Keywords:
variation; precipitation; streamflow; Jialingjiang River Basin; human activity
分类号:
P333.5
摘要:
流域降水与径流演变规律的异同性，可有效表征人类活动对流域径流的影响。基于嘉陵江流域1958—2008年水文、气象资料，探寻流域年降水量、年径流量的空间分布规律，采用经验正交函数和时间序列分析法，研究年降水量、降水量年内分配指数和年径流量的演变规律，对比演变规律的同步及异步变化特征。结果表明：年降水量自流域东南向西北递减，年径流深分别于涪江、渠江上游和流域北部、涪江中游、流域中游干流段出现相对高值和低值。流域年降水量、降水量年内分配未呈现显著变化趋势，无突变点，把口站北碚站年径流量下降趋势明显，于1990年产生突变；年降水量和年径流量主周期一致，均为35 a和21 a，但主周期显著程度不同；年降水量和年径流量于2002—2008年丰枯状态不同，径流相对于降水呈现强减少趋势。流域自然条件和水利水保措施、城市化等人类活动造成降水与径流主周期显著程度的差异，以及降水与径流趋势性、突变性及阶段性变化的不同步。
Abstract:
The differences between precipitation and streamflow can effectively represent the impact of human activities on changes of streamflow in a catchment. This study applies EOF and time series analysis method to investigate spatio-temporal variation of streamflow and precipitation based on long term hydrol-meteorological data in the Jialingjiang River Basin from 1958 to 2008. The results indicate that (1) the precipitation decreased from the southeast to the northwest in the basin and the runoff depth showed basically consistent gradient with precipitation; (2) Annual precipitation and its distribution indices do not present significant/evident trends and changing points. However, annual streamflow at Beibei station decreased significantly at 95% confidence level, and had a changing point in 1990. The wavelet analysis showed that the annual precipitation and streamflow had same periodical features (35 and 21 years). The annual streamflow showed relative drier condition compared with annual precipitation during 2002—2008. It is concluded that the natural condition, water conservation project and urbanization lead to differences of significance level between precipitation and runoff, as well as the temporal trend and changing point in the Jialingjiang River Basin.

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备注/Memo

收稿日期:2011-8-8;改回日期:2011-9-13。
基金项目:国家基础研究“973”项目中“区域水土流失过程与趋势分析（2007CB407203）”；中国科学院国际合作项目“渭河流域水环境问题综合治理对策研究”
作者简介:白桦（1986- ），男，河北省任丘市人，硕士研究生，研究方向为水文学及水资源。E-mail：baihua1985@nwsuaf.edu.cn
通讯作者:穆兴民（1961- ），男，陕西省华阴市人，博士，研究员，博士生导师，研究方向为生态水文学。E-mail：xmmu@ms.iswc.ac.cn

更新日期/Last Update: 1900-01-01