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	Assessing the response of dryland barley yield to climate variability in semi-arid regions, Iran
	Kheiri Mohammad; Kambouzia Jafar; Deihimfard Reza; Moghaddam Saghi M; Anvari Seyran
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2021
卷号	13 期号:9 页码:905-917
英文摘要	Precipitation and temperature are the most abiotic factors that greatly impact the yield of crop, particularly in dryland. Barley, as the main cereal is predominantly cultivated in dryland and the livelihood of smallholders depends on the production of this crop, particularly in arid and semi-arid regions. This study aimed to investigate the response of the grain yield of dryland barley to temperature and precipitation variations at annual, seasonal and monthly scales in seven counties of East and West Azerbaijan provinces in northwestern Iran during 1991-2010. Humidity index (HI) was calculated and its relationship with dryland barley yield was evaluated at annual and monthly scales. The results showed that the minimum, maximum and mean temperatures increased by 0.19°C/a, 0.11°C/a and 0.10°C/a, respectively, while annual precipitation decreased by 0.80 mm/a during 1991-2010. Climate in study area has become drier by 0.22/a in annual HI during the study period. Negative effects of increasing temperature on the grain yield of dryland barley were more severe than the positive effects of increasing precipitation. Besides, weather variations in April and May were related more to the grain yield of dryland barley than those in other months. The grain yield of dryland barley was more drastically affected by the variation of annual minimum temperature comparing with other weather variables. Furthermore, our findings illustrated that the grain yield of dryland barley increased by 0.01 t/hm2 for each unit increase in annual HI during 1991-2010. Finally, any increase in the monthly HI led to crop yield improvement in the study area, particularly in the drier counties, i.e., Myaneh, Tabriz and Khoy in Iran.
英文关键词	humidity index crop yield spatiotemporal variation temperature precipitation
类型	Article
语种	英语
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:7093015
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377427
作者单位	Kheiri Mohammad, Department of Agroecology, Environmental Sciences Research Institute, Shahid Beheshti University, Tehran, 1983963113, Iran.; Kambouzia Jafar, Department of Agroecology, Environmental Sciences Research Institute, Shahid Beheshti University, Tehran, 1983963113, Iran.; Deihimfard Reza, Department of Agroecology, Environmental Sciences Research Institute, Shahid Beheshti University, Tehran, 1983963113, Iran.; Anvari Seyran, Department of Agroecology, Environmental Sciences Research Institute, Shahid Beheshti University, Tehran, 1983963113, Iran.; Moghaddam Saghi M, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Prague, 16500, Czech Republic.
推荐引用方式 GB/T 7714	Kheiri Mohammad,Kambouzia Jafar,Deihimfard Reza,et al. Assessing the response of dryland barley yield to climate variability in semi-arid regions, Iran[J],2021,13(9):905-917.
APA	Kheiri Mohammad,Kambouzia Jafar,Deihimfard Reza,Moghaddam Saghi M,&Anvari Seyran.(2021).Assessing the response of dryland barley yield to climate variability in semi-arid regions, Iran.Journal of Arid Land,13(9),905-917.
MLA	Kheiri Mohammad,et al."Assessing the response of dryland barley yield to climate variability in semi-arid regions, Iran".Journal of Arid Land 13.9(2021):905-917.