气候变化领域集成服务门户(CCPortal): Spatial–temporal changes in meteorological and agricultural droughts in Northeast China: change patterns, response relationships and causes

CCPortal

DOI	10.1007/s11069-021-04940-1
	Spatial–temporal changes in meteorological and agricultural droughts in Northeast China: change patterns, response relationships and causes
	Du C.; Chen J.; Nie T.; Dai C.
发表日期	2021
ISSN	0921030X
英文摘要	Under the background of climate warming, drought events occur frequently. Generally, meteorological drought leads to agricultural drought. Understanding the spatiotemporal distribution, characteristics of drought and the relationship between meteorological and agricultural drought are important for early drought warning. Northeast China (NEC) was selected as the study area. The spatiotemporal characteristics of meteorological drought and agricultural drought in different seasons in NEC were analyzed. Correlation analysis was employed to analyze the relationship between meteorological and agricultural drought in different vegetation types. Furthermore, cross-wavelet analysis was employed to further analyze the relationship between meteorological drought and agricultural drought, explore the teleconnection and large-scale climate patterns and investigate possible causes of drought variations in this region. The results showed that (1) the frequency of mild meteorological drought and low and that of moderate agricultural drought was high; (2) there was a significant positive correlation between meteorological drought and agricultural drought, while the change in agricultural drought lagged behind that of meteorological drought. (3) A strong correlation between meteorological drought and agricultural drought was identified in cropland areas. (4) The El Niño Southern Oscillation and Pacific interannual oscillation were important factors affecting the changes in meteorological drought and agricultural drought NEC. The results provide scientific ground for the sustainable development of agriculture, drought monitoring and early warning, disaster prevention and mitigation in NEC. © 2021, The Author(s), under exclusive licence to Springer Nature B.V.
关键词	Agricultural drought Cross-wavelet analysis Meteorological drought sc-PDSI SPEI
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206195
作者单位	School of Water Conservancy and Electric Power, Heilongjiang University, Harbin, 150080, China
推荐引用方式 GB/T 7714	Du C.,Chen J.,Nie T.,等. Spatial–temporal changes in meteorological and agricultural droughts in Northeast China: change patterns, response relationships and causes[J],2021.
APA	Du C.,Chen J.,Nie T.,&Dai C..(2021).Spatial–temporal changes in meteorological and agricultural droughts in Northeast China: change patterns, response relationships and causes.Natural Hazards.
MLA	Du C.,et al."Spatial–temporal changes in meteorological and agricultural droughts in Northeast China: change patterns, response relationships and causes".Natural Hazards (2021).