龙凤山灌区水稻生育期降水量多时间尺度分析  

Multiple time scale analysis of rice growing period precipitation based on Longfengshan irrigation district

作　　者：徐淑琴[1] 王云鹤[1] 杨旭[2] 董丽丽[1] 

机构地区：[1]东北农业大学水利与建筑学院,哈尔滨150030 [2]黑龙江大学水利电力学院,哈尔滨150080

出　　处：《东北农业大学学报》2012年第11期98-102,共5页Journal of Northeast Agricultural University

基　　金：黑龙江省教育厅科学技术研究项目(11551044);东北农业大学博士基金项目(E090202)

摘　　要：龙凤山灌区是国家的重要粮食生产基地和商品粮基地,灌区内82%以上的作物是水稻,所以降水量对作物的生长至关重要。采用Morlet小波分析方法对龙凤山灌区(1953-2010年)水稻生育期的降水量进行多尺度分析,分析存在的主要震荡周期、突变点和发展趋势,为灌区的用水及分配提供依据。结果表明,龙凤山灌区降水量存在6、14和24年的主周期,水稻生育期降水量以长周期的上升趋势变化为主,经历了4次丰枯交替变换,从大尺度来看,2012年将处于降水偏少期。The Longfengshan irrigation district plays an important role as a base of commodity grain.There are more than 82% of crops are rice in the irrigation district,so the precipitation is very important for crop growth.The amount of precipitation in the period of rice growth in the Longfengshan irrigation district（1953-2010 a） was analyzed in multi-scale with Morlet wavelet analysis method.And the main shock cycle,catastrophe point and development tendency were revealed to provide the basis for water usage and water distribution in the future in the Longfengshan Irrigation District.Furthermore,the results showed that the precipitation in Longfengshan Irrigation District contained the main period of 6 a,14 a and 24 a,and there was a upward trend in the long-period.After 4 alternates between the wet period and the drought period.There will be a drought period in 2012.

关 键 词：小波分析 降水序列 龙凤山灌区 

分 类 号：P333.1[天文地球—水文科学]