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新疆石河子地区降水量变化特征分析
Authors
凌红波
史薇
徐海量
Publication date
20 October 2010
Publisher
Abstract
根据石河子地区4个区域(石河子市,莫索湾垦区,下野地垦区,安集海垦区)1959-2006年的年均降水量资料,利用Mann-Kendall秩次相关检验和时间序列的线性趋势检验得到:石河子地区的年际降水量总体呈上升趋势,但该趋势在0.05水平上不显著;通过Morlet小波变换对石河子地区降水量进行了多时间尺度的周期性变化分析和趋势预测,结果表明:石河子市,安集海,下野地,莫索湾垦区分别在15a,16a,14a,16a的中心时间尺度上存在约4个主周期,6a,5a,6a,6a的时间尺度上存在约9个次周期;2006年后的一段时间内石河子地区降水量可能呈下降趋势,经过2a左右以后该区将进入降水量的偏少期,并将有5年左右的持续时间
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Institutional Repository of Xinjiang Institute of Ecology and Geography, CAS
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Last time updated on 29/11/2016