干旱区生态环境知识资源中心(Arid): 黑河流域荒漠区降水格局及其脉动特征

Arid

	黑河流域荒漠区降水格局及其脉动特征
其他题名	Rainfall patterns and pulse characteristics in desert regions of the Heihe River basin
	刘冰; 常学向; 李守波
来源期刊	生态学报
ISSN	1000-0933
出版年	2010
卷号	30 期号:19 页码:5194-5199
中文摘要	利用1967--2008年日降水资料,对黑河流域荒漠区降水格局及其脉动特征进行系统研究.结果表明:年均降水量为113.3mm,年际变化27.93%,降水呈平稳下降趋势.小降水事件(≤5mm)为主,年际变化较小.大降水事件(≥10mm)频率较低,但年际变化及其对年降水量的贡献较大.降水日期以≤5mmd-1为主,≥10mmd-1变异较大.<10d间隔期所占比率最大,频率基本稳定(CV=18.29%),而>10d间隔期变异较大(CV=27.21%).年降水量与降水事件,降水期,<10d间隔期以及总降水间隔期存在显著正相关性.≤5mm降水总量变异系数为24.57%,接近年降水量(27.93%),>10mm变异系数为76.68%,表明大降水事件在不同年份的差异是降水总量和降水格局差异的主要原因
英文摘要	Rainfall data were collected to systematic study rainfall patterns and pulse characteristics from 1967 to 2008 in desert regions of the Heihe River basin. The results showed that the annual rainfall averaged 113.3 mm and the interannual variability accounted for 27.93% of the annual rainfall that were described as a downward trend. The majority of rainfall events were characteristic by ≤5 mm, and the interannual variability were relative small. Large rainfall events(≥10 mm)were infrequent but the interannual variability was wide comparatively. Rainfall date of ≤ 5 mm d-1 were the most common, whereas the date of ≥10 mm d-1 varied widely. Inter-rainfall period of < 10 d accounted for the most proportion and the variability were relative small(CV=18.29%), whereas the variability of >10 d were relative large(CV=27.21%). Annual rainfall were significantly positively correlated with rainfall events, rainfall period,<10 d inter-rainfall period and total inter-rainfall period. The variation coefficient of ≤5 mm were 24.57% and approached to that of annual rainfall(27.93%), whereas >10 mm were 76.68%, which indicated that the interannual variability of large rainfall events were mainly resulted in the difference of annual rainfall and rainfall pattern
中文关键词	荒漠区 ; 降水脉动 ; 降水事件 ; 降水日期 ; 降水间隔期
英文关键词	desert region rainfall pulse rainfall events rainfall date inter-rainfall period
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ECOLOGY
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:4034661
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/225532
作者单位	中国科学院寒区旱区环境与工程研究所临泽内陆河流域研究站;内陆河流域生态水文重点实验室, 中国科学院寒区旱区环境与工程研究所临泽内陆河流域研究站;内陆河流域生态水文重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	刘冰,常学向,李守波. 黑河流域荒漠区降水格局及其脉动特征[J]. 中国科学院西北生态环境资源研究院,2010,30(19):5194-5199.
APA	刘冰,常学向,&李守波.(2010).黑河流域荒漠区降水格局及其脉动特征.生态学报,30(19),5194-5199.
MLA	刘冰,et al."黑河流域荒漠区降水格局及其脉动特征".生态学报 30.19(2010):5194-5199.