干旱区生态环境知识资源中心(Arid): Spatiotemporal Drought Assessment over Sahelian Countries from 1985 to 2015

Arid

DOI	10.1007/s13351-020-9178-7
	Spatiotemporal Drought Assessment over Sahelian Countries from 1985 to 2015
	Noureldeen, Nusseiba; Mao, Kebiao; Mohmmed, Alnail; Yuan, Zijin; Yang, Yanying
通讯作者	Mao, KB
来源期刊	JOURNAL OF METEOROLOGICAL RESEARCH
ISSN	2095-6037
EISSN	2198-0934
出版年	2020
卷号	34 期号:4 页码:760-774
英文摘要	Due to infrequent rainfall, high temperatures, and degraded land, the Sahel region often suffers from droughts. The Sahel region is considered as one of the world's driest and extreme environmental conditions. In order to assess spatiotemporal vulnerability of potential drought impacts, we used remote sensing and ground station data to evaluate drought conditions in the Sahel region from 1985 to 2015. The standard precipitation index (SPI), standard precipitation evapotranspiration index (SPEI), vegetation condition index (VCI) anomaly, along with socioeconomic indicators were performed. In addition, Pearson correlation coefficient (PCC) was computed between drought indices and three main crops (sorghum, millet, and maize) in the region to estimate the effects. The analysis showed that temperature increased by 0.78 degrees C from 1985 to 2015, which had a significant impact on crop yield for sorghum, maize, and millet with a statistical significance value ofP> 0.05. In the decade spanning 1994 to 2005 alone, the temperature increased by 0.57 degrees C, which resulted in extreme drought in Algeria, Sudan, Chad, Nigeria, and Mauritania. For the effect of drought on crop production, high significance was noted on the SPI and SPEI-3 timescale: sorghum with SPI-3 (r= 0.71) and SPEI-3 (r= 0.65), millet with SPI-3 (r= 0.61) and SPEI-3 (r= 0.72), and maize with SPI-3 (r= 0.81) and SPEI-3 (r= 0.65) during the study period. In the growing season, VCI anomaly had strong correlations with sorghum and millet (r= 0.67 and 0.75, respectively). A significant agreement was also noticed between the combined drought index (CDI) and vulnerability index (VI) in Burkina Faso (r= -0.676;P< 0.00), Mali (r= -0.768;P< 0.00), Mauritania (r= 0.843;P< 0.001), Niger (r= -0.625;P< 0.001), and Nigeria (r= -0.75;P< 0.005). The results show that the above indices are effective in assessing agricultural drought and its impact on crop production in the Sahel, and in identifying areas most affected by drought.
英文关键词	vegetation condition index (VCI) drought vulnerability index (VI) Sahel region
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000565793100007
WOS关键词	STANDARDIZED PRECIPITATION INDEX ; VEGETATION CONDITION INDEX ; METEOROLOGICAL DROUGHT ; AGRICULTURAL DROUGHT ; TIME-SCALES ; VULNERABILITY ; AFRICA ; DESERTIFICATION ; TEMPERATURE ; VARIABILITY
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
来源机构	中国科学院地理科学与资源研究所 ; 北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326025
作者单位	[Noureldeen, Nusseiba; Mao, Kebiao; Yuan, Zijin; Yang, Yanying] Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China; [Mao, Kebiao] Ningxia Univ, Sch Phys & Elect Engn, Yinchuan 750021, Ningxia, Peoples R China; [Mao, Kebiao] Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing Sci, Beijing 100101, Peoples R China; [Mao, Kebiao] Beijing Normal Univ, Beijing 100101, Peoples R China; [Mohmmed, Alnail] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Noureldeen, Nusseiba,Mao, Kebiao,Mohmmed, Alnail,et al. Spatiotemporal Drought Assessment over Sahelian Countries from 1985 to 2015[J]. 中国科学院地理科学与资源研究所, 北京师范大学,2020,34(4):760-774.
APA	Noureldeen, Nusseiba,Mao, Kebiao,Mohmmed, Alnail,Yuan, Zijin,&Yang, Yanying.(2020).Spatiotemporal Drought Assessment over Sahelian Countries from 1985 to 2015.JOURNAL OF METEOROLOGICAL RESEARCH,34(4),760-774.
MLA	Noureldeen, Nusseiba,et al."Spatiotemporal Drought Assessment over Sahelian Countries from 1985 to 2015".JOURNAL OF METEOROLOGICAL RESEARCH 34.4(2020):760-774.