干旱区生态环境知识资源中心(Arid): 中国北方气候干湿变化及干旱演变特征

Arid

	中国北方气候干湿变化及干旱演变特征
其他题名	Climate dry-wet change and drought evolution characteristics of different dry-wet areas in northern China
	胡子瑛; 周俊菊; 张利利; 魏伟; 曹建军
来源期刊	生态学报
ISSN	1000-0933
出版年	2018
卷号	38 期号:6 页码:1908-1919
中文摘要	利用中国北方15个省(区、市)320个气象站19602014年逐月降水量资料,运用标准化降水指数(SPI)、标准差和相关分析等方法,基于不同时间尺度,对近55年来中国北方及不同干湿区气候干湿时空变化特征进行分析,并从干旱站次比、干旱强度等方面分析了年际干旱的时空变化特征。结果表明:①19602014年中国北方地区整体呈变干趋势,年际干旱站次比和干旱强度在同步波动中均呈下降趋势。②19602014年北方地区春季和冬季呈湿润化趋势,冬季湿润化趋势最明显,夏季和秋季呈干旱化趋势,夏季干旱化趋势最显著,夏季降水对年干湿状况的变化起决定性作用。③湿润区和半湿润区有干旱化趋势,而干旱区和半干旱区均呈湿润化趋势发展;湿润区和半湿润区年际干旱站次比、干旱强度呈上升趋势,而干旱区和半干旱区则相反。④中国北方东部季风区的湿润区和半湿润区以及处于季风区和非季风区分界线两侧的半湿润区和半干旱区气候干湿变化均呈显著同步波动变化趋势,而中国北方东部季风区的湿润区和半湿润区与中国北方西部非季风区的干旱区气候干湿变化呈显著反向波动变化趋势,夏季具有同样的规律,而冬季和春季四大干湿区干湿变化具有较好的同步一致性。
英文摘要	The Standardized Precipitation Index (SPI),standard deviations,and correlation analysis methods were adopted to explore temporal and spatial characteristics of dry and wet climatic changes in northern China using monthly precipitation data for the last 55 years (19602014) from 320 stations across 15 provinces. Furthermore,based on the Drought stations proportion and drought intensity,temporospatial characteristics of annual drought were also studied. The results showed that: (1) From 1960 to 2014,there was a general trend of northern China gradually becoming arid. The annual Drought stations proportion and drought intensity declined simultaneously. (2) Although there was a trend of increasing wetness in both spring and winter,it was more obvious in the winter. On the contrary,summer and autumn had a trend of becoming arid,which was more obvious in the summer. Summer precipitation was a determining factor for variation in annual dry-wet patterns. (3) Humid and semi-humid areas tended to become more arid,whereas arid and semi-arid areas had a wetting trend. The Drought stations proportion and drought intensity increased in humid and semi-humid areas,but decreased in arid and semi-arid areas. (4) Dry-wet climatic changes in northern China’s eastern monsoon area (humid and semi-humid areas) and both sides of the boundaries of the monsoon area (semi-humid and semi-arid areas) had obviously synchronous fluctuation trends. However,there were opposite fluctuation trends in northern China’s eastern monsoon area (humid and semi-humid areas) and arid areas in the western non-monsoon area of northern China. Summer had the same pattern,and dry-wet changes in four dry and wet areas in winter and spring also had synchronous fluctuation trends.
中文关键词	北方地区 ; 气候干湿区 ; 干湿变化 ; 标准化降水指数(SPI)
英文关键词	northern China dry and wet areas dry-wet change Standardized Precipitation Index (SPI)
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:6220755
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/2XILL650/238111
作者单位	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	胡子瑛,周俊菊,张利利,等. 中国北方气候干湿变化及干旱演变特征[J]. 西北师范大学,2018,38(6):1908-1919.
APA	胡子瑛,周俊菊,张利利,魏伟,&曹建军.(2018).中国北方气候干湿变化及干旱演变特征.生态学报,38(6),1908-1919.
MLA	胡子瑛,et al."中国北方气候干湿变化及干旱演变特征".生态学报 38.6(2018):1908-1919.