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1959—2006年长白山地区降水序列的多时间尺度分析
引用本文:胡乃发,王安志,关德新,袁凤辉,金昌杰,吴家兵,王纪军.1959—2006年长白山地区降水序列的多时间尺度分析[J].应用生态学报,2010,21(3):549-556.
作者姓名:胡乃发  王安志  关德新  袁凤辉  金昌杰  吴家兵  王纪军
作者单位:1. 中国科学院沈阳应用生态研究所,沈阳,110016;中国科学院研究生院,北京,100049
2. 中国科学院沈阳应用生态研究所,沈阳,110016
基金项目:中国科学院知识创新工程重要方向项目(KZCX2-YW-Q06-2-1); 国家科技支撑计划项目(2006BAC01A12); 国家重点基础研究发展计划项目(2009CB421101)资助
摘    要:基于长白山地区松江、东岗、长白、和龙、临江和天池6个气象站1959—2006年的月均降水量和年降水量数据,采用Morlet小波分析方法,对1959—2006年长白山地区植被生长季(5—9月)降水量、降雪季(11月至次年4月)降水量和年降水量序列进行多尺度特征分析,并运用Daubechies小波系中的db5小波对各降水序列进行不同层次的分解和低频重构,对重构序列进行了趋势识别和分析.结果表明:研究期间,长白山地区植被生长季降水量存在3~6a、10~13a和24~30a的特征周期;降雪季降水量存在1~2a、5~7a和17~20a的特征周期;年降水存在8~10a、16~20a、25~30a的特征周期;研究区年降水量序列呈现整体下降的趋势.

关 键 词:长白山地区  降水序列  小波分析  小波方差  趋势识别

Multiple time scale analysis of precipitation series in Changbai Mountain Region in 1959-2006
HU Nai-fa,WANG An-zhi,GUAN De-xin,YUAN Feng-hui,JIN Chang-jie,WU Jia-bing,WANG Ji-jun.Multiple time scale analysis of precipitation series in Changbai Mountain Region in 1959-2006[J].Chinese Journal of Applied Ecology,2010,21(3):549-556.
Authors:HU Nai-fa  WANG An-zhi  GUAN De-xin  YUAN Feng-hui  JIN Chang-jie  WU Jia-bing  WANG Ji-jun
Institution:Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China|Graduate University of Chinese Academy of Sciences, Beijing
 100049, China
Abstract:Based on the 1959-2006 monthly and annual precipitation data from Songjiang, Donggang, Changbai, Helong, Linjiang, and Tianchi meteo
rological stations, and by using Morlet wavelet method, a multiple time scale analysis was made on the precipitation series from May to September (vegetation growth season), November to next April (snow season), and the annual in Changbai Mountain Region. The precipitation series was decomposed and low-frequency reconstructed at different levels by using the db5 wavelet of Daubechies wavelets, and the trend of the reconstructed series was identified and analyzed. In 1959-2006, there existed 3-6 years, 10-13 years, and 24-30 years cycles of precipitation series in vegetation growth season, 1-2 years, 5-7 years, and 17-20 years cycles in snow season, and 8-10 years, 16-20 years, and 25-30 years cycles in the annual, and the annual precipitation series showed an overall downward trend.
Keywords:Changbai Mountain Region  precipitation series  wavelet analysis  wavelet variance  trend identification
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