干旱区生态环境知识资源中心(Arid): Assessing the impact of global climate changes on irrigated wheat yields and water requirements in a semi-arid environment of Morocco

Arid

DOI	10.1038/s41598-019-55251-2
	Assessing the impact of global climate changes on irrigated wheat yields and water requirements in a semi-arid environment of Morocco
	Bouras, Elhoussaine 1,2,3; Jarlan, Lionel 2,3; Khabba, Said 3,4,5; Er-Raki, Salah 1,3,4; Dezetter, Alain 3,6; Sghir, Fathallah 3,7; Tramblay, Yves 3,6
通讯作者	Jarlan, Lionel
来源期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
出版年	2019
卷号	9
英文摘要	The present work aims to quantify the impact of climate change (CC) on the grain yields of irrigated cereals and their water requirements in the Tensift region of Morocco. The Med-CORDEX (MEDiterranean COordinated Regional Climate Downsca ling EXperiment) ensemble runs under scenarios RCP4.5 (Representative Concentration Pathway) and RCP8.5 are first evaluated and disaggregated using the quantile-quantile approach. The impact of CC on the duration of the main wheat phenological stages based on the degree-day approach is then analyzed. The results show that the rise in air temperature causes a shortening of the development cycle of up to 50 days. The impacts of rising temperature and changes in precipitation on wheat yields are next evaluated, based on the AquaCrop model, both with and without taking into account the fertilizing effect of CO2. As expected, optimal wheat yields will decrease on the order of 7 to 30% if CO2 concentration rise is not considered. The fertilizing effect of CO2 can counterbalance yield losses, since optimal yields could increase by 7% and 13% respectively at mid-century for the RCP4.5 and RCP8.5 scenarios. Finally, water requirements are expected to decrease by 13 to 42%, mainly in response to the shortening of the cycle. This decrease is associated with a change in temporal patterns, with the requirement peak coming two months earlier than under current conditions.
类型	Article
语种	英语
国家	Morocco ; France
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000503173700001
WOS关键词	ATMOSPHERIC CO2 CONCENTRATION ; FAO CROP MODEL ; MEDITERRANEAN ENVIRONMENT ; TEMPERATURE EXTREMES ; SIMULATION-MODELS ; ENRICHMENT FACE ; BIAS CORRECTION ; AQUACROP MODEL ; WINTER-WHEAT ; GRAIN-YIELD
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
EI主题词	2019-12-16
来源机构	French National Research Institute for Sustainable Development
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311802
作者单位	1.Univ Cadi Ayyad UCAM, Fac Sci & Tech, Dept Phys Appl, LP2M2E, Marrakech, Morocco; 2.Ctr Etud Spatiales BIOsphere CESBIO, IRD, Toulouse, France; 3.Univ Cadi Ayyad UCAM, Joint Int Lab TREMA, Marrakech, Morocco; 4.Univ Mohammed VI Polytech UM6P, CRSA, Benguerir, Morocco; 5.Univ Cadi Ayyad UCAM, FSS, LMME, Marrakech, Morocco; 6.Lab HydroSci Montpellier HSM, Montpellier, France; 7.ORMVAH, Marrakech, Morocco
推荐引用方式 GB/T 7714	Bouras, Elhoussaine,Jarlan, Lionel,Khabba, Said,et al. Assessing the impact of global climate changes on irrigated wheat yields and water requirements in a semi-arid environment of Morocco[J]. French National Research Institute for Sustainable Development,2019,9.
APA	Bouras, Elhoussaine.,Jarlan, Lionel.,Khabba, Said.,Er-Raki, Salah.,Dezetter, Alain.,...&Tramblay, Yves.(2019).Assessing the impact of global climate changes on irrigated wheat yields and water requirements in a semi-arid environment of Morocco.SCIENTIFIC REPORTS,9.
MLA	Bouras, Elhoussaine,et al."Assessing the impact of global climate changes on irrigated wheat yields and water requirements in a semi-arid environment of Morocco".SCIENTIFIC REPORTS 9(2019).