Assessing the response of dryland barley yield to climate variability in semi-arid regions,Iran

作     者：Mohammad KHEIRI Jafar KAMBOUZIA Reza DEIHIMFARD Saghi M MOGHADDAM Seyran ANVARI Mohammad KHEIRI;Jafar KAMBOUZIA;Reza DEIHIMFARD;Saghi M MOGHADDAM;Seyran ANVARI

作者机构：Department of AgroecologyEnvironmental Sciences Research InstituteShahid Beheshti UniversityTehran ***Iran Faculty of Environmental SciencesCzech University of Life Sciences PraguePrague 16500Czech Republic 

出 版 物：《Journal of Arid Land》 (干旱区科学（英文版）)

年 卷 期：2021年第13卷第9期

页      面：905-917页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 09[农学] 0706[理学-大气科学] 0901[农学-作物学] 

主　　题：humidity index crop yield spatiotemporal variation temperature precipitation 

摘      要：Precipitation and temperature are the most abiotic factors that greatly impact the yield of crop,particularly in ***,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 *** 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 *** index(HI)was calculated and its relationship with dryland barley yield was evaluated at annual and monthly *** results showed that the minimum,maximum and mean temperatures increased by 0.19℃/a,0.11℃/a and 0.10℃/a,respectively,while annual precipitation decreased by 0.80 mm/a during *** in study area has become drier by 0.22/a in annual HI during the study *** effects of increasing temperature on the grain yield of dryland barley were more severe than the positive effects of increasing ***,weather variations in April and May were related more to the grain yield of dryland barley than those in other *** grain yield of dryland barley was more drastically affected by the variation of annual minimum temperature comparing with other weather ***,our findings illustrated that the grain yield of dryland barley increased by 0.01 t/hm^(2) for each unit increase in annual HI during ***,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.