Impacts of Temperature Trends and SPEI on Yields of Major Cereal Crops in the Gambia

Variations in the climate constitute a significant threat to the productivity of food crops in the Gambia. A good understanding of the influence of climate variability on crop production is vital for climate resilience and improved food security. This study examined the trends, relationships, and th...

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Autores principales:	Fanta F. Jabbi, Yu’e Li, Tianyi Zhang, Wang Bin, Waseem Hassan, You Songcai
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	climate variability temperatures SPEI impacts yields Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/cb449684180b46ff9d86a07fa957e31a
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spelling	oai:doaj.org-article:cb449684180b46ff9d86a07fa957e31a2021-11-25T19:01:25ZImpacts of Temperature Trends and SPEI on Yields of Major Cereal Crops in the Gambia10.3390/su1322124802071-1050https://doaj.org/article/cb449684180b46ff9d86a07fa957e31a2021-11-01T00:00:00Zhttps://www.mdpi.com/2071-1050/13/22/12480https://doaj.org/toc/2071-1050Variations in the climate constitute a significant threat to the productivity of food crops in the Gambia. A good understanding of the influence of climate variability on crop production is vital for climate resilience and improved food security. This study examined the trends, relationships, and the extent to which growing season temperatures and the SPEI (Standardized Precipitation and Evapotranspiration Index) impacted sorghum, millet, maize, and rice yields in three agro-ecological regions of the Gambia during 1990–2019. Mean temperatures and the SPEI exhibited increasing trends while observed yields showed a decline across all regions. The SPEI had a significant positive relationship with yields, and temperatures were negatively associated with yields. Though yield response to climate variability differs among regions, 20% to 62% of variations in the four crop yields were due to climate trends. The combined effect of the SPEI and temperatures decreased yields from 3.6 kg ha<sup>−1</sup> year<sup>−1</sup> to 29.4 kg ha<sup>−1</sup> year<sup>−1</sup>, with the most severe decline observed in rice and maize yields in the Sahelian zone. Although uncertainties might arise from not considering related extreme climate events, this study highlights how past climate trends affect cereal yields in the Gambia; thus, any unfavorable change in the local climate could have severe repercussions on the country’s food security. There is a need for concerted efforts to increase investments in adaptation strategies to lessen the effects of the climate for improved crop productivity.Fanta F. JabbiYu’e LiTianyi ZhangWang BinWaseem HassanYou SongcaiMDPI AGarticleclimate variabilitytemperaturesSPEIimpactsyieldsEnvironmental effects of industries and plantsTD194-195Renewable energy sourcesTJ807-830Environmental sciencesGE1-350ENSustainability, Vol 13, Iss 12480, p 12480 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	climate variability temperatures SPEI impacts yields Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
spellingShingle	climate variability temperatures SPEI impacts yields Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Fanta F. Jabbi Yu’e Li Tianyi Zhang Wang Bin Waseem Hassan You Songcai Impacts of Temperature Trends and SPEI on Yields of Major Cereal Crops in the Gambia
description	Variations in the climate constitute a significant threat to the productivity of food crops in the Gambia. A good understanding of the influence of climate variability on crop production is vital for climate resilience and improved food security. This study examined the trends, relationships, and the extent to which growing season temperatures and the SPEI (Standardized Precipitation and Evapotranspiration Index) impacted sorghum, millet, maize, and rice yields in three agro-ecological regions of the Gambia during 1990–2019. Mean temperatures and the SPEI exhibited increasing trends while observed yields showed a decline across all regions. The SPEI had a significant positive relationship with yields, and temperatures were negatively associated with yields. Though yield response to climate variability differs among regions, 20% to 62% of variations in the four crop yields were due to climate trends. The combined effect of the SPEI and temperatures decreased yields from 3.6 kg ha<sup>−1</sup> year<sup>−1</sup> to 29.4 kg ha<sup>−1</sup> year<sup>−1</sup>, with the most severe decline observed in rice and maize yields in the Sahelian zone. Although uncertainties might arise from not considering related extreme climate events, this study highlights how past climate trends affect cereal yields in the Gambia; thus, any unfavorable change in the local climate could have severe repercussions on the country’s food security. There is a need for concerted efforts to increase investments in adaptation strategies to lessen the effects of the climate for improved crop productivity.
format	article
author	Fanta F. Jabbi Yu’e Li Tianyi Zhang Wang Bin Waseem Hassan You Songcai
author_facet	Fanta F. Jabbi Yu’e Li Tianyi Zhang Wang Bin Waseem Hassan You Songcai
author_sort	Fanta F. Jabbi
title	Impacts of Temperature Trends and SPEI on Yields of Major Cereal Crops in the Gambia
title_short	Impacts of Temperature Trends and SPEI on Yields of Major Cereal Crops in the Gambia
title_full	Impacts of Temperature Trends and SPEI on Yields of Major Cereal Crops in the Gambia
title_fullStr	Impacts of Temperature Trends and SPEI on Yields of Major Cereal Crops in the Gambia
title_full_unstemmed	Impacts of Temperature Trends and SPEI on Yields of Major Cereal Crops in the Gambia
title_sort	impacts of temperature trends and spei on yields of major cereal crops in the gambia
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/cb449684180b46ff9d86a07fa957e31a
work_keys_str_mv	AT fantafjabbi impactsoftemperaturetrendsandspeionyieldsofmajorcerealcropsinthegambia AT yueli impactsoftemperaturetrendsandspeionyieldsofmajorcerealcropsinthegambia AT tianyizhang impactsoftemperaturetrendsandspeionyieldsofmajorcerealcropsinthegambia AT wangbin impactsoftemperaturetrendsandspeionyieldsofmajorcerealcropsinthegambia AT waseemhassan impactsoftemperaturetrendsandspeionyieldsofmajorcerealcropsinthegambia AT yousongcai impactsoftemperaturetrendsandspeionyieldsofmajorcerealcropsinthegambia
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Impacts of Temperature Trends and SPEI on Yields of Major Cereal Crops in the Gambia

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