Drought and Vulnerability assessment in the fluctuation of saffron production affected by rainfall shortage Case study: Razavi and South Khorasan province

Document Type : Original Article

Authors

1 agriculture faculty,ferdowsi university of mashhad,Iran

2 Freedoms University of Mashhad

3 Professor in Meteorology, Water Engineering Dep., College of Agriculture Ferdowsi University of Mashhad., Mashhad., Iran

Abstract

Drought as one of the most important natural disasters affects communities directly through changes in access to water resources, resulting in major damage to human life and natural ecosystems.Agricultulal vulnerability can be referred to the degree that agricultural systems may experience harm due to a stress. In this study, for the purpose of quantitative measurement of meteorological drought The standardized precipitation indices (SPI), rainfall anomalies (RAI) and annual precipitation criteria (SIAP) were used based on the monthly precipitation of 6 meteorological stations in Razavi and southern Khorasan provinces during 30 years (1364-1394)in Iran. Saffron relative yield index was used to study the effects of meteorological drought on agriculture. The severity of droughts was in severe and very severe mode. The SIAP, RAI and SPI indices have shown a trend consistent with the crop indices of saffron. However, the SIAP and SPI were more favorable in terms of the severity of estimated droughts with relative performance index. Drought indices in saffron producing cities in Razavi and South Khorasan provinces over the past 10 years have been significantly correlated with relative decline in saffron yield during this period. The results showed that in all the study locations the saffron production was low sensitive to drought in this period.

Keywords

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Iranian Journal of Irrigation & Drainage
Volume 13, Issue 3 - Serial Number 75
September and October 2019
Pages 773-787

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