干旱区生态环境知识资源中心(Arid): Analysis for Spatio-Temporal Variation Characteristics of Droughts in Different Climatic Regions of the Mongolian Plateau Based on SPEI

Arid

DOI	10.3390/su11205767
	Analysis for Spatio-Temporal Variation Characteristics of Droughts in Different Climatic Regions of the Mongolian Plateau Based on SPEI
	Jin, Laiquan 1,2,3; Zhang, Jiquan 1; Wang, Ruoyu 2; Zhang, Minghua 2; Bao, Yuhai 3; Guo, Enliang 3; Wang, Yongfang 3
通讯作者	Zhang, Jiquan
来源期刊	SUSTAINABILITY
EISSN	2071-1050
出版年	2019
卷号	11 期号:20
英文摘要	Continuous climate warming in the last few decades has led to global climate anomalies, resulting in frequent drought events in arid/semiarid regions with fragile and sensitive ecological environment. The Mongolian Plateau (MP) is located at the mid-latitude arid/semiarid climate region, which is deemed as the most sensitive region in response to global climate change. In order to understand the spatiotemporal characteristics of droughts in Mongolian Plateau under changing climate, we divided the study area into three climatic regions via Koppen climate classification. Then, the seasonal and annual drought trends were analyzed by standardized precipitation evaporation index (SPEI), which is a function of monthly mean temperatures, highest temperatures, lowest temperatures and precipitations, collected from the 184 meteorological stations from 1980 to 2015. Mann-Kendall (MK) test was employed to detect if there is an abrupt change of annual drought, while the empirical orthogonal function method (EOF) was adopted to investigate the spatiotemporal characteristics of droughts across the Mongolian Plateau. Results from MK test illustrated that the SPEI-12 exhibited statistically significant downward trends (a < 0.05) for all three climatic regions of the Mongolian Plateau. EOF spatial analysis indicated that Region III experienced the most severe drought from 1980 to 2015. During the 35 years period, an abrupt change of drought was detected in 1999. Before year 1999, the climate was relatively humid. However, the entire region became more arid after year 1999, reflected by remarkably increased frequency and intensity of drought. SPEI-3 revealed the trend of drought at seasonal scale. We found that drought became more severe in spring, summer, and fall seasons for the entire MP. However, winter became more humid. Different climate regions exhibited quite different drought seasonality: Region I experienced a severe arid trend in summer and fall. For Region II and III, summer became more arid. All three regions became more humid in winter season, especially for Region I, with the Sen's slope of 0.0241/a.
英文关键词	drought spatiotemporal variation characteristics SPEI climatic regions Mongolian Plateau
类型	Article
语种	英语
国家	Peoples R China ; USA
开放获取类型	gold
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000498398900224
WOS关键词	GLOBAL CLIMATE ; NORTHERN CHINA ; INNER-MONGOLIA ; PRECIPITATION ; VARIABILITY ; IMPACT ; OSCILLATION ; VEGETATION ; INDEXES ; COMPLEX
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
EI主题词	2019-10-02
来源机构	University of California, Davis
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310257
作者单位	1.Northeast Normal Univ, Sch Environm, Changchun 130024, Jilin, Peoples R China; 2.Univ Calif Davis, Dept Land Air & Water Resources, 1 Shields Ave, Davis, CA 95616 USA; 3.Inner Mongolia Normal Univ, Coll Geog, Hohhot 010022, Peoples R China
推荐引用方式 GB/T 7714	Jin, Laiquan,Zhang, Jiquan,Wang, Ruoyu,et al. Analysis for Spatio-Temporal Variation Characteristics of Droughts in Different Climatic Regions of the Mongolian Plateau Based on SPEI[J]. University of California, Davis,2019,11(20).
APA	Jin, Laiquan.,Zhang, Jiquan.,Wang, Ruoyu.,Zhang, Minghua.,Bao, Yuhai.,...&Wang, Yongfang.(2019).Analysis for Spatio-Temporal Variation Characteristics of Droughts in Different Climatic Regions of the Mongolian Plateau Based on SPEI.SUSTAINABILITY,11(20).
MLA	Jin, Laiquan,et al."Analysis for Spatio-Temporal Variation Characteristics of Droughts in Different Climatic Regions of the Mongolian Plateau Based on SPEI".SUSTAINABILITY 11.20(2019).