安徽农业科学Issue(7)：4263-4265,3.
近50年宁夏沙坡头区降水变化特征分析
Analysis on Characteristics of Precipitation Variation in Shapotou District in Recent 50 Years
摘要
Abstract
[Objective] This study aimed to explore the historical evolution rules of precipitation variation in Shapotou District by analyzing the annual precipitation data during 1961 to 2010 from Shapotou District Meteorological Bureau of Ningxia, to provide the basis for middle and long term precipitation trend forecast. [Method] Five-point moving average method, trend coefficient analysis method, Mann-Kendall trend test method and variance analysis method were used to analyze the annual precipitation data during 1961 to 2010 in Shapotou District. [ Result] Annual precipitation series in Shapotou District of Ningxia during 1961 to 2010 had shown an insignificantly decreasing trend; among the seasonal precipitation series, spring precipitation had shown a consistent variation with the annual precipitation, summer precipitation had shown a slightly decreasing trend before 1978 and a significantly decreasing trend after 1978, autumn precipitation had shown a decreasing trend before 1978 and an insignificantly increasing trend after 1978, winter precipitation had shown a significantly increasing trend before 1978 and an insignificantly increasing trend after 1978. Both the annual and seasonal precipitation series had significant periodic variation rules. [ Conclusion ] Results of this study was conducive to understand the overall trend of annual precipitation series variation in Shapotou District of Ningxia and its seasonal distribution characteristics and variation rules and had provided a reliable basis for the hydrological forecasting in this region and reference for the middle and long term-estimation and forecast of the trend of precipitation variation.关键词
降水/趋势/周期Key words
Precipitation/ Trend analysis/ Cycle分类
天文与地球科学引用本文复制引用
樊宽,孙振夏,张玉兰,陈永旭,史泉,石宏磊..近50年宁夏沙坡头区降水变化特征分析[J].安徽农业科学,2012,(7):4263-4265,3.基金项目
宁夏气象局青年基金项目资助 （）
宁夏气象局项目"中卫市沙漠设施农业气象保障技术研究"资助 （）
宁夏回族自治区科技厅科技公关项目"枣树病虫害演变规律及预测预报和综合防控技术研究"资助. （）
