DOI: 10.1007/s11069-021-04940-1
论文题名: Spatial–temporal changes in meteorological and agricultural droughts in Northeast China: change patterns, response relationships and causes
作者: Du C. ; Chen J. ; Nie T. ; Dai C.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
语种: 英语
中文关键词: Agricultural drought
; Cross-wavelet analysis
; Meteorological drought
; sc-PDSI
; SPEI
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168994
Appears in Collections: 气候变化与战略
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作者单位: School of Water Conservancy and Electric Power, Heilongjiang University, Harbin, 150080, China
Recommended Citation:
Du C.,Chen J.,Nie T.,et al. Spatial–temporal changes in meteorological and agricultural droughts in Northeast China: change patterns, response relationships and causes[J]. Natural Hazards,2021-01-01