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001-es BibID:BIBFORM105967
035-os BibID:(cikkazonosító)16469 (WOS)000902497100001 (Scopus)85144544776
Első szerző:Nxumalo, Gift (Mezőgazdasági vízgazdálkodási mérnök, PhD student)
Cím:Meteorological Drought Variability and Its Impact on Wheat Yields across South Africa / Gift Nxumalo, Bashar Bashir, Karam Alsafadi, Hussein Bachir, Endre Harsányi, Sana Arshad, Safwan Mohammed
ISSN:1661-7827 1660-4601
Megjegyzések:Drought is one of the natural hazards that have negatively affected the agricultural sector worldwide. The aims of this study were to track drought characteristics (duration (DD), severity (DS), and frequency (DF)) in South Africa between 2002 and 2021 and to evaluate its impact on wheat production. Climate data were collected from the South African Weather Service (SAWS) along with wheat yield data from the Department of Agriculture, Forestry and Fisheries (2002-2021). The standard precipitation index (SPI) was calculated on 3-, 6-, 9-, and 12-month time scales, and the trend was then tracked using the Mann-Kendall (MK) test. To signify the climatic effects on crop yield, the standardized yield residual series (SYRS) was computed along with the crop-drought resilience factor (CR) on a provincial scale (2002-2021). The output of the SPI analysis for 32 stations covering all of South Africa indicates a drought tendency across the country. On a regional scale, western coastal provinces (WES-C and NR-C) have been more vulnerable to meteorological droughts over the past 20 years. Positive correlation results between SYRS and wheat yield indicate that the WES-C province was highly influenced by drought during all stages of wheat growth (Apr-Nov). Historical drought spells in 2003, 2009, and 2010 with low CR = 0.64 caused the province to be highly impacted by the negative impacts of droughts on yield loss. Overall, drought events have historically impacted the western part of the country and dominated in the coastal area. Thus, mitigation plans should be commenced, and priority should be given to this region. These findings can assist policymakers in budgeting for irrigation demand in rainfed agricultural regions.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban
meteorological drought
crop yield
food security
climate change
South Africa
Megjelenés:International Journal of Environmental Research and Public Health. - 19 : 24 (2022), p. 1-22. -
További szerzők:Bashir, Bashar Alsafadi, Karam Bachir, Hussein Harsányi Endre (1976-) (agrármérnök) Arshad, Sana Mohammed Safwan (1985-) (agrármérnök)
Pályázati támogatás:NKFIA-TKP2021-NKTA-32
Internet cím:Szerző által megadott URL
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