摘要
研究京津唐地区降水量的时空分布对于认清该地区水资源的数量变化趋势、合理配置水资源及降低旱涝灾害均具有重要意义。基于京津唐地区6个国家级气象站点50年逐日降水资料,利用滑动均值法、M-K检验法及空间插值法等,分析了京津唐地区降水的空间分布、变化特征及近50年的降水变化趋势。结果表明,该地区降水在时空上分布不均匀,整体上西南降水少,东北降水多,年内降水主要集中在6~9月,50年来降水量整体呈减少趋势,但自2005年以来,年降水量出现回升迹象。
The research of spatial and temporal distribution of precipitation in Jingjintang region plays an important role in recognizing the change trend of water resources quantity, allocating the water resources reasonably and reducing the drought and flood disasters in this region. Based on the daily precipitation data of 6 national meteorological stations of the Jingjintang region in recent 50 years, this paper analyzed the spatial distribution, variable characteristics of precipitati- on and the change trend of precipitation through the moving average method, the M-K test and the spatial interpolation method. The results show that the rainfall in this area is uneven in the space and time; the precipitation in southwest of the region is less while the northeast is morel it mainly concentrates in 6 9 month in the year. Over the past 50 years, the precipitation appears a downward trend; but since 2005, the annual precipitation shows the signs of recovery.
出处
《水电能源科学》
北大核心
2015年第7期7-11,共5页
Water Resources and Power
基金
国家自然科学基金项目(51409270
51209225)
科技部国家国际科技合作专项资助(2013DFG70990)
水资源与水电工程科学国家重点实验室开放研究基金项目(2012B093)
关键词
京津唐地区
降水特征
变化趋势
滑动均值法
M-K检验法
Jingjintang region
precipitation characteristics
change trend
moving average method
M-K test
