干旱区生态环境知识资源中心(Arid): 气候暖干化背景下黄土高原旱涝时空演变特征

Arid

	气候暖干化背景下黄土高原旱涝时空演变特征
其他题名	Spatiotemporal Evolution of Drought and Flood in the Loess Plateau under Climate Drying-warming
	胡娜娜; 延军平; 李双双; 李敏敏
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2013
卷号	30 期号:4 页码:705-711
中文摘要	选取58个国家气象基准站19602010年逐年降水资料,采用Kriging插值、Mann-Kendall检测及Morlet小波分析等方法,对该区降水及旱涝时空特征进行分析。结果表明:黄土高原暖干化趋势明显,气温、降水突变年份分别在1995年、1990年左右。旱涝等级呈上升趋势,尤以半湿润区最为明显。干旱区发生旱、涝频率最高,涝情略微严重,但干旱更易发生,大旱频次高值中心分散分布,洪涝发生频率西部低、中部高。该区旱涝情势存在多尺度的周期变化,25~30 a的振荡最强,推测涝期即将结束,旱期将要开始。研究成果可为黄土高原旱涝灾害防御提供参考。
英文摘要	In this paper,the spatiotemporal evolutions of annual precipitation,drought and flood were researched using the Kriging interpolation,Mann-Kendall test and Morlet wavelet analysis based on the annual precipitation data observed by 58 meteorological stations in the Loess Plateau during the period from 1960 to 2010 and the background of climate change and peculiar geographic location in China. The results revealed that the annual temperature in the Loess Plateau was increased,but the annual precipitation was decreased in the whole area and the semiarid and semi-humid regions. Precipitation variation was the highest in arid zone but the lowest in semi-humid regions. There was a regional difference of annual precipitation,the annual precipitation was gradually decreased from the southeast to the northwest,and drought trend became more obvious. The sharp change of mean annual temperature and precipitation occurred in 1996 and 1990 respectively. The drought and flood levels were in an increase trend,especially in the semi-humid regions. Occurring frequencies of drought and flood were the highest in arid zone. Drought occurred more easily than flood,and the centers with high drought occurring frequency were dispersed; the occurring frequency of flood was the lowest in the west but the highest in the central area. There were the fluctuation periodicities of drought and flood in the Loess Plateau,the 25 - 30-year fluctuation was the strongest, and it was considered that the current flood period would be ended,but a new drought period would begin.
中文关键词	气候暖干化 ; 气温 ; 降水 ; 旱涝灾害 ; 时空分布 ; 黄土高原
英文关键词	climate drying-warming air temperature precipitation drought and flood disasters spatiotemporal distribution the Loess Plateau
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:4886769
来源机构	陕西师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229587
作者单位	陕西师范大学旅游与环境学院, 西安, 陕西 710062, 中国
推荐引用方式 GB/T 7714	胡娜娜,延军平,李双双,等. 气候暖干化背景下黄土高原旱涝时空演变特征[J]. 陕西师范大学,2013,30(4):705-711.
APA	胡娜娜,延军平,李双双,&李敏敏.(2013).气候暖干化背景下黄土高原旱涝时空演变特征.干旱区研究,30(4),705-711.
MLA	胡娜娜,et al."气候暖干化背景下黄土高原旱涝时空演变特征".干旱区研究 30.4(2013):705-711.