干旱区生态环境知识资源中心(Arid): Dry spells in a semi-arid region of Brazil and their influence on maize productivity

Arid

DOI	10.1016/j.jaridenv.2022.104892
	Dry spells in a semi-arid region of Brazil and their influence on maize productivity
	Nogueira, Danilo B.; da Silva, Alexsandro O.; Giroldo, Aelton B.; da Silva, Ana P. N.; Costa, Bruno R. S.
通讯作者	da Silva, AO
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2023
卷号	209
英文摘要	Maize production (Zea mays) under rainfed conditions, although risky in semi-arid areas, is still widespread. In theses areas, rainfall events are concentrated over a short, irregular and discontinuous period, so that understanding these events has great relevance to the anning and agricultural management of maize. This study sought to understand the relationship between the frequency of different classes of dry spells formed during the rainy season and the occurrence of dry, normal and wet years in the semi-arid region. Also analysed was whether this same frequency is influenced by the incidence of long-duration El Nino and La Nina phenomena, and how all these factors interfere with maize productivity. For this, a trend analysis was then carried out between the frequency of dry spells, considering years classified as dry, normal and wet, and whether this number is also influenced by the occurrence of long-duration El Nino and La Nina events, and how the classes and temporal occurrence of dry spells influence maize productivity within the study region. The results show that crop achieving good results for dry spells of up to 15 days, after which productivity falls significantly. The greatest number of dry spells was found in regions of the semi-arid sertao that are further inland, especially more prolonged dry spells. Throughout the region, the highest probability of occurrence of dry spells is during the first and last month of the rainy season, with a high concentration of dry spells which vary from 6 to 20 days with no rain, indicating the need supementary irrigation, anting nearer the end of the season in years of normal or wet conditions, reducing the chances of the crop suffering from water stress.
英文关键词	Rainfall scenarios Rainfed Climate condition El nino La nina
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000927625800006
WOS关键词	DAILY PRECIPITATION ; TEMPORAL ANALYSIS ; SOUTH-AMERICA ; DROUGHT ; CLIMATE ; TEMPERATURE ; VARIABILITY ; CATCHMENT ; PATTERNS ; RAINFALL
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397135
推荐引用方式 GB/T 7714	Nogueira, Danilo B.,da Silva, Alexsandro O.,Giroldo, Aelton B.,et al. Dry spells in a semi-arid region of Brazil and their influence on maize productivity[J],2023,209.
APA	Nogueira, Danilo B.,da Silva, Alexsandro O.,Giroldo, Aelton B.,da Silva, Ana P. N.,&Costa, Bruno R. S..(2023).Dry spells in a semi-arid region of Brazil and their influence on maize productivity.JOURNAL OF ARID ENVIRONMENTS,209.
MLA	Nogueira, Danilo B.,et al."Dry spells in a semi-arid region of Brazil and their influence on maize productivity".JOURNAL OF ARID ENVIRONMENTS 209(2023).