干旱区生态环境知识资源中心(Arid): 1959-2014年古浪河流域降水变化特征及突变分析

Arid

	1959-2014年古浪河流域降水变化特征及突变分析
其他题名	Variation Characteristics and Mutation Analysis of Precipitation in the Gulang River Basin during the Period 1959 2014
	王婷婷 1; 冯起2 ; 郭小燕 2; 李宗省 2
来源期刊	高原气象
ISSN	1000-0534
出版年	2019
卷号	38 期号:6 页码:1251-1262
中文摘要	利用1959-2014年间古浪河流域的实测地面降水资料,采用多种技术方法相结合,开展了古浪河流域56年降水变化研究工作。结果表明,该流域年降水量总体呈上升趋势,其中上、下游年降水量的变化速率分别为0.13 mm·(10a)~(-1)和0.03 mm·(10a)~(-1),年降水量的增加主要源自于月最小降水量增加的贡献; 上游及下游地区春季和夏季降水相似,均表现为缓慢增加趋势,而上游地区秋季和冬季降水增加幅度明显高于下游的古浪盆地。年降水量存在5年、11年和27年左右的震荡期,以11年尺度为主周期,流域内降水周期变化季节差异显著。上游和下游降水季节周期变化趋势相似,但与上游相比,下游不同季节主周期能量较大,且呈现出显著的周期变化。对降水的突变分析表明,上游地区在1975年附近发生突变,而下游突变点发生在2005年左右,进一步证实了高海拔地区比低海拔地区对降水的反应更加敏感。
英文摘要	Based on the observed surface precipitation data from 1959 to 2014,variation of precipitation in the Gulang River Basin was studied by various technical methods. The results showed that precipitation increased over the past 56 years,the rise speed in the upper and lower reaches were 0.13 mm·(10a)~(-1)and 0.03 mm·(10a)~(-1),respectively. The contribution of increasing precipitation mainly comes from the monthly minimum precipitation increase. The variation trends in spring and summer of upper and lower reaches were similar,which showed slow rise tendency,however,the variation trends in autumn and winter of upper reaches were apparently higher than that of lower reaches. There were three cycles in annual precipitation,which were 5 years,11 years and 27 years,the cycle of 11 years was the prominent cycle; the periodic changes of seasonal precipitation were different. Spatially,the periodic changes of seasonal precipitation in lower reaches were similar with that in upper reaches,except that the energy of the seasonal prominent cycle in lower reaches were larger than that in upper reaches. The results of mutation analysis of precipitation showed that the annual precipitation in upper reaches had an abrupt change around 1975,while the abrupt change in lower reaches was around 2005,indicating the high regions were more sensitive to climate change.
中文关键词	干旱区 ; 降水 ; 趋势变化 ; 周期 ; 突变分析
英文关键词	Arid region precipitation trend variation cycle period mutation analysis
语种	中文
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:6620558
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315849
作者单位	1.兰州交通大学经济管理学院;;中国科学院西北生态环境资源研究院, ;;, 兰州;;兰州, 甘肃;;甘肃 730070;;730000, 中国; 2.中国科学院西北生态环境资源研究院;;中国科学院内陆河流域生态水文重点实验室, ;;中国科学院内陆河流域生态水文重点实验室, 兰州;;兰州, 甘肃;;甘肃 730000;;730000, 中国
推荐引用方式 GB/T 7714	王婷婷,冯起,郭小燕,等. 1959-2014年古浪河流域降水变化特征及突变分析[J],2019,38(6):1251-1262.
APA	王婷婷,冯起,郭小燕,&李宗省.(2019).1959-2014年古浪河流域降水变化特征及突变分析.高原气象,38(6),1251-1262.
MLA	王婷婷,et al."1959-2014年古浪河流域降水变化特征及突变分析".高原气象 38.6(2019):1251-1262.