文献类型：期刊文献

中文题名：乌兰布和沙漠东北部磴口绿洲近57年日照时数变化特征

英文题名：Variation Characteristics of Sunshine Duration in Recent 57 Years of Dengkou Oasis,Northeast of Wulanbuhe Desert

作者：肖彩虹[1] 郝玉光[1] 郭承德[2] 刘芳[1] 董雪[1]

第一作者：肖彩虹

机构：[1]中国林科院沙漠林业实验中心;[2]磴口县农业推广中心

年份：2014

卷号：0

期号：9

起止页码：7-10

中文期刊名：防护林科技

外文期刊名：Protection Forest Science and Technology

基金："十二五"国家科技计划项目(2012BAD16B0103)

语种：中文

中文关键词：日照时数;变化特征;磴口绿洲

外文关键词：sunshine duration;variation characteristics;Dengkou region oasis

分类号：S716

摘要：利用磴口县近57年(1954—2010)逐月日照时数资料,分析了磴口县年代际、年际、各季及各月的日照时数变化特征。结果表明:(1)年及四季日照时数各年代际变化规律均为20世纪80年代最小;2001—2010年最大;70年代、90年代偏多;50年代偏少;80年代是日照时数变化的转折期。(2)日照时数夏季>春季>秋季>冬季,分别占全年的28.1%、26.6%、24.1%和21.2%。日照时数年内分布规律为单峰型,5月最大,其次为6月,12月最小。(3)年及春季和夏季日照时数二次拟合曲线通过了0.05水平的显著性检验,均表现为70年代中期之前,日照时数呈下降趋势,70年代中期之后呈上升趋势,而且上升速度远大于下降速度,并且在90年代之后均处于正距平。(4)生长季日照时数年际变化与年日照时数变化最相似,生长季日照时数的变化对全年的变化趋势起着主导作用。
Using monthly sunshine hour data in the recent 57 years （1954 - 2010） ,this paper analyzed the variation characteristics of inter-decadal and inter-annual ,each quarter and per-month sunshine duration in Dengkou region . Results were as follows ：（1） Annual and seasonal variation of sunshine hours of each intergeneration was the lowest in the 1980s ,the largest in 2001 - 2010 ,more in the 1970s and 1990s ,and less in the 1950s .Inflection point of sunshine duration was in the 1980s ;（2） Sunshine hours in four seasons was summer ＆gt; spring ＆gt; autumn ＆gt; winter , respectively accounts for 28 .1% ,26 .6% ,24 .1% and 21 .2% .Distribution of sunshine hours during the years was a single peak ,with the largest in May ,followed by June ,the minimum in December ;（3） The quadratic fitting curves of the year ,as well as spring and summer were passed the 0 .05 level of significance test ,showing a down-ward trend before the mid 1970s of the sunshine time ,an upward trend after the mid 1970s ,with the rising rate much faster than the decline rate ,while both rates presenting the positive anomaly after the 1990s ;（4） The inter-an-nual variations of sunshine time was the most similar with that in the growing season .The variation of sunshine du-ration in the growing season played a leading role throughout the year .