Spatiotemporal variability of drought in the northern part of northeast China

doi:10.1002/hyp.11503

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地灾害与地表过程重点实验室

	Spatiotemporal variability of drought in the northern part of northeast China
	Zhang, Xuanwen 1; Liu, Xiaohong 1,2; Wang, Wenzhi3 ; Zhang, Tingjun 4; Zeng, Xiaomin 1,2; Xu, Guobao 1; Wu, Guoju 1; Kang, Huhu 1
刊名	HYDROLOGICAL PROCESSES
	2018-05-15
卷号	32 期号:10 页码:1449-1460
关键词	drought global warming northeastern China permafrost region spatial variation temporal variation
ISSN号	0885-6087
DOI	10.1002/hyp.11503
英文摘要	The thermal and moisture balance of permafrost regions has been altered by global warming, profoundly influencing vegetation dynamics and forest carbon cycling. To understand the spatial and temporal characteristics and driving forces responsible for changes in moisture conditions in the permafrost region of the Greater and Lesser Hinggan Mountains, northeastern China, we assessed long-term trends for temperature, precipitation, and the standardized precipitation-evapotranspiration index. From 1951 to 2014, annual mean temperature had a significant increase trend and the annual precipitation was not with significant trend. Since 1951, the annual standardized precipitation-evapotranspiration index has decreased significantly at the boundary between regions with seasonal soil freezing and permafrost, suggesting that conspicuous permafrost degradation and moisture loss has occurred. The study area can be divided into 4 parts with a different balance between thermal and moisture conditions: the northern Songnen Plains, the Hulun Buir Sand Land, the middle reaches of the Heilongjiang River, and the Mohe region. However, only the middle reaches of the Heilongjiang River showed an obvious long-term drying trend. The 4 areas showed quasi-periodic oscillation and sea surface temperature during the winter half-year affected drought intensity in the northern of Songnen Plains. When El Nino strengthened, moisture conditions increased in the northern of Songnen Plains, whereas stronger La Nina events decreased water availability. The result of this study will be beneficial for regional water resource management and prepare for potential drought hazards in the northeastern China.
语种	英语
出版者	WILEY
WOS记录号	WOS:000434115000011
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/23025]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
通讯作者	Liu, Xiaohong
作者单位	1.Chinese Acad Sci, Northwest Inst Eco Environm & Resources, State Key Lab Cryosphere Sci, Lanzhou 730000, Gansu, Peoples R China 2.Shaanxi Normal Univ, Sch Geog & Tourism, Xian 710119, Shaanxi, Peoples R China 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China 4.Lanzhou Univ, Coll Earth Environm Sci, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xuanwen,Liu, Xiaohong,Wang, Wenzhi,et al. Spatiotemporal variability of drought in the northern part of northeast China[J]. HYDROLOGICAL PROCESSES,2018,32(10):1449-1460.
APA	Zhang, Xuanwen.,Liu, Xiaohong.,Wang, Wenzhi.,Zhang, Tingjun.,Zeng, Xiaomin.,...&Kang, Huhu.(2018).Spatiotemporal variability of drought in the northern part of northeast China.HYDROLOGICAL PROCESSES,32(10),1449-1460.
MLA	Zhang, Xuanwen,et al."Spatiotemporal variability of drought in the northern part of northeast China".HYDROLOGICAL PROCESSES 32.10(2018):1449-1460.