DOI: 10.1007/s11069-020-03940-x
论文题名: Spatiotemporal variability of vegetation due to drought dynamics (2012–2017): a case study of the Upper Paraíba River basin, Brazil
作者: Ferreira da Silva G.J. ; de Oliveira N.M. ; Santos C.A.G. ; da Silva R.M.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2020
卷: 102, 期: 3 起始页码: 939
结束页码: 964
语种: 英语
中文关键词: Drought monitoring
; Evapotranspiration
; Land surface temperature
; MODIS
; Semiarid
英文摘要: Abstract: Vegetation indices have been widely used for monitoring the spatiotemporal variables of vegetation and characterizing droughts, primarily in semiarid regions. Drought is a multifaceted natural process that can lead to reduced water availability and can consequently have extensive effects on the socioeconomic, agricultural and development sectors of countries. This study aims to evaluate the spatial–temporal pattern of vegetation as a result of drought dynamics during the last major drought (2012–2017) in the Brazilian semiarid region. Satellite image products from the Moderate Resolution Imaging Spectroradiometer (MOD16, MOD11 and MOD15), standardized precipitation index, rainfall anomaly and vegetation indices were used to monitor and identify drought episodes. To relate vegetation with droughts, the vegetation supply water index was used. The results revealed a strong influence of droughts on vegetation behavior and a strong seasonal pattern of variables in the study area, primarily for land surface temperature, leaf area index and evapotranspiration. These results lead to the conclusion that, based on correlations between vegetation and droughts over a climatological period, it is possible to evaluate the relative roles of vegetation behavior for semiarid regions using MODIS products. Graphic abstract: [Figure not available: see fulltext.] © 2020, Springer Nature B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168490
Appears in Collections: 气候变化与战略
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作者单位: Postgraduate Program, Civil and Environmental Engineering/CT/UFPB, Federal University of Paraíba, João Pessoa, PB 58051-900, Brazil; Department of Civil and Environmental Engineering, Federal University of Paraíba, João Pessoa, PB 58051-900, Brazil; Department of Geosciences, Federal University of Paraíba, João Pessoa, PB 58051-900, Brazil
Recommended Citation:
Ferreira da Silva G.J.,de Oliveira N.M.,Santos C.A.G.,et al. Spatiotemporal variability of vegetation due to drought dynamics (2012–2017): a case study of the Upper Paraíba River basin, Brazil[J]. Natural Hazards,2020-01-01,102(3)