干旱区生态环境知识资源中心(Arid): 京津冀地区气象干旱特征及其成因分析

Arid

	京津冀地区气象干旱特征及其成因分析
其他题名	Characteristics of meteorological drought in Jing-Jin-Ji area and cause analysis
	张丽艳; 杨东; 马露
来源期刊	水力发电学报
ISSN	1003-1243
出版年	2017
卷号	36 期号:12 页码:28-38
中文摘要	京津冀地处我国华北平原的北端,是整个区域最干旱地区之一。利用区域16个地面站点气象数据计算逐年、季度的标准化降水蒸散指数(SPEI),分析京津冀年和季节尺度的干旱面积覆盖率、干旱频率,揭示出京津冀近34年干旱时空格局变化规律及其与ENSO(厄尔尼诺-南方涛动)的关系。研究结果表明:年均SPEI值以-0.065/10a的速度递减;各时间尺度干旱面积覆盖率除冬季外均呈不同程度的增长趋势;京津冀各时间尺度年代际空间分布差异显著,1980年代干旱频率和高频干旱覆盖率较大区域主要集中于京津冀西北地区,1990年代分布于京津冀中部及东北地区,而2000年代整体差异较大;ENSO是造成京津冀干旱灾害的重要原因。
英文摘要	Jing-Jin-Ji or Beijing-Tianjin-Hebei area, located in the north of North China Plain, is one of the most arid regions in the North China Plain. In this study, annual and seasonal values of standardized precipitation evapotranspiration index (SPEI) are calculated using meteorological data at 16 gauge stations over this area to analyze the coverage rate and occurrence frequency of drought. We demonstrate the spatial and temporal evolution of drought and its relationship with El Nino-Southern Oscillation (ENSO) in the area in recent 34 years. The results show that in this period, the SPEI values of this area was decreased gradually at a speed of-0.065/10a, and that except for winter season, its drought coverage rates in different time scales showed different increasing rates. And decadal variability in the spatial distribution over Jing-Jin-Ji area was prominent. In the 1980s, its drought coverage rate and occurrence frequency of drought grew in its northwest part; in the 1990s, the growth concentrated on its middle and northeast parts; but in the 2000s, the whole area showed tremendous variations. These drought events are closely related with the ENSO.
中文关键词	气象干旱 ; 京津冀地区 ; 标准化降水蒸散指数 ; 干旱频率 ; 时空分布
英文关键词	Meteorological drought Jingjinji area standardized precipitation evapotranspiration index frequency of drought spatiotemporal distribution
类型	Article
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:6144325
来源机构	西北师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236607
作者单位	张丽艳, 西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国.; 杨东, 西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国.; 马露, 西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国.
推荐引用方式 GB/T 7714	张丽艳,杨东,马露. 京津冀地区气象干旱特征及其成因分析[J]. 西北师范大学,2017,36(12):28-38.
APA	张丽艳,杨东,&马露.(2017).京津冀地区气象干旱特征及其成因分析.水力发电学报,36(12),28-38.
MLA	张丽艳,et al."京津冀地区气象干旱特征及其成因分析".水力发电学报 36.12(2017):28-38.