太行山山前平原降水量特征及其分布的小波分析——以栾城为例
Wavelet Analysis of Precipitation and Its Distribution in the Piedmont Region of Taihang Mountains—A Case Study at Luancheng Station
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摘要: 运用墨西哥帽函数(Mexican Hat Function)小波分析方法对太行山山前平原典型地区的栾城站40年来的降水量以及当地典型作物冬小麦不同生育期阶段的降水量进行了小波分析。结果表明,分时段的降水量并无一个稳定的周期,而是变周期。该区全年降水量变化在40年尺度上可分为1980年前的偏多期和其后的偏少期;10~30年尺度上可分为60年代末以前的偏多、1997年以后的偏少和这期间的动荡期;在较小时间尺度上存在5~7年的周期变化,今后10年内年降水量的总体趋势依旧偏少,5年内为少中有稍偏高于平均降水量的趋势。冬小麦全生育期均存在较明显的4个阶段的交替变化,1967年以前的偏多期、1967~1983年左右的偏少期、1984~1994年左右的偏多期、1995年以后的偏少期。Abstract:
A 40-year time series of annual precipitation and its distribution during the growth period of winter wheat at Luancheng Station, Agro-ecosystem Experimental Station of Chinese Ecological Research Network, CAS, located in typical region of Piedmont region of Taihang Mountains, is analyzed by statistic and Mexican Hat Function wavelet analysis. The result shows that the period in different intervals is not stable, but variable. The annual precipitation variation can be divided into two periods, more than mean precipitation before 1980 and less than mean later, on the 40 years scale. On 10 to 30 years scale, it is richer before 1960s and less after 1997, and more or less between them. Furthermore, periodic variation of 5—7 years is found in shorter time scale. In a whole, from now to 2010, annual precipitation will have still a decreasing tendency, but is will be more than that of mean during the coming five years, possibly. Four times of alternate variation, more than mean precipitation before 1967, less from 1967 to 1983, richer from 1984 to 1994 and less after 1995, are found in the whole growing season of winter wheat.
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表 1 栾城站年降水量及冬小麦生育期降水量统计特征
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[1] 刘昌明, 张喜英, 由懋正.大型蒸渗仪与小型棵间蒸发器结合测定冬小麦蒸散的研究.水利学报,1998,(10):36~39. http://www.cnki.com.cn/Article/CJFDTOTAL-SLXB810.007.htm [2] Liu Changming, Zhang Xiying, Zhang Yongqiang. Determination of daily evaporation and evapotranspiration of winter wheat and maize by large-scale weighing lysimeter and micro-lysimeter. Agricultural and Forest Meteorology, 2002,111:109~120. doi: 10.1016/S0168-1923(02)00015-1 [3] 杨永辉, 郝小华, 曹建生, 等.太行山山前平原地区地下水下降与降水、作物的关系.生态学杂志,2001,20(6):4~7,15. http://www.cnki.com.cn/Article/CJFDTOTAL-STXZ200106001.htm [4] 黄嘉佑,张镡.黄河流域旱涝与水资源分析.大气科学,1996,20(6):673~678. http://www.cnki.com.cn/Article/CJFDTOTAL-DQXK606.003.htm [5] 黄荣辉, 徐予红, 周连童.我国夏季降水的年代际变化及华北干旱化趋势.高原气象,1999,18(4):465~476. http://www.cnki.com.cn/Article/CJFDTOTAL-GYQX199904000.htm [6] 杨广基.华北地区的降水特征及趋势估计.高原气象,1999,18(4):668~677. http://www.cnki.com.cn/Article/CJFDTOTAL-GYQX199904023.htm [7] 杨辉,宋正山.华北地区水资源多时间尺度分析.高原气象,1999,18(4):496~508. http://www.cnki.com.cn/Article/CJFDTOTAL-GYQX199904003.htm [8] 陈烈庭.华北各区夏季降水年际和年代际变化的地域性特征.高原气象,1999,18(4):477~485. http://www.cnki.com.cn/Article/CJFDTOTAL-GYQX199904001.htm [9] 孙燕, 王谦谦, 钱永甫, 等.华北四季降水特征及与我国其他地区降水的联系.南京气象学院学报,2002,25(4):503~509. http://www.cnki.com.cn/Article/CJFDTOTAL-NJQX200204009.htm [10] 崔锦泰.小波分析导论.西安:西安交通大学出版社,1995.1~ 20. [11] 王文圣, 丁晶, 向红莲.小波分析在水文学中的应用研究及展望.水科学进展,2002,13(4):515~520. http://www.cnki.com.cn/Article/CJFDTOTAL-SKXJ200204020.htm [12] 匡正, 季仲贞, 林一骅.华北降水时间序列资料的小波分析.气候与环境研究,2000,5(3):312~317. http://www.cnki.com.cn/Article/CJFDTOTAL-QHYH200003011.htm [13] 张存杰.甘肃省河东地区伏旱的小波分析.应用气象学报,1998,9(3):291~297. http://qikan.camscma.cn/jams/ch/reader/view_abstract.aspx?file_no=19980342&flag=1 [14] 张美平,敖淑珍, 刘翔, 等.广州白云国际机场近46年来雷暴气候的统计特征.应用气象学报,2004,15(1):66~73. http://qikan.camscma.cn/jams/ch/reader/view_abstract.aspx?file_no=20040109&flag=1 [15] 陈隆勋, 邵永宁, 张清芬.近四十年我国气候变化初步分析.应用气象学报,1991,2(3):164~173. http://qikan.camscma.cn/jams/ch/reader/view_abstract.aspx?file_no=19910215&flag=1 [16] 牛存稳,张利平,夏军.华北地区降水量的小波分析.干旱区地理,2004,27(1):66~70. http://www.cnki.com.cn/Article/CJFDTOTAL-GHDL200401012.htm