摘要
在介绍尼洋河流域自然地理、气象水文及自然灾害情况的基础上,基于Mann-Kendall检验方法,对尼洋河流域气象水文数据进行分析得出其水文变量演变趋势。结果显示尼洋河流域降水量近30年年际变化不大,但降雨的年内分配极不均匀,汛期降雨量大而集中、非汛期雨水少而不稳,且冬季降雨整体表现出减少趋势;气温较为一致,呈上升趋势;出口断面流量在夏季和全年尺度上有上升的趋势,秋季、冬季的长期变化趋势较弱。研究结果可为该流域的洪涝灾害防治工作和水资源优化配置提供参考。
An outline introduction to the physical geography, meteorological and hydrological conditions, natural disasters was presented in NiYanghe Basin. Analysis of the hydrological and meterological data of NiYanghe Basin for using the methods of Mann-kendall test. the results show the evolution trend of hydrological variables.The study revealed that the inter-annual change of rainfall nearly the past 30 years in Niyanghe was little changed. But the runoff distribution of the NiYanghe Basin in a year is very uneven, it rained heavy and concentrated in the rainy season, and it was shortage of water resources in dry season, especially in winter showed an a downward trend ; The temperature variation were basically the same, and an upward trend;The flow rate on the outlet section is improved in summer and the annual scale, the long-term trend of less responsive in autumn and winter. The results can provide the reference for flood disaster prevention and the integrated management in NiYanghe basin.
出处
《中国农村水利水电》
北大核心
2017年第12期86-89,共4页
China Rural Water and Hydropower
基金
西藏自治区高校青年教师创新支持计划项目(QC2015-45)
