Islam, M S (2024) Identification of seasonal drought and its impacts on cropping season in Bangladesh. International Journal of Disaster Resilience in the Built Environment, 15(4), pp. 516-529. ISSN 1759-5916
Abstract
Purpose: This study aims to identify seasonal drought using standardized precipitation index (SPI). The following specific objectives are to generate result and identify seasonal drought and determine different scale of seasonal drought and its impacts on cropping season. Design/methodology/approach: Seasonal SPI was calculated using long-term rainfall data for three seasons. The SPI was calculated using the formula and it is effective for the determinants. This study showed the functional relationship between drought duration, frequency and drought time scale using the SPI. (Formula presented.). Findings: Seasonal drought occurs more frequently in Bangladesh that affects crops and the agricultural economy every year. More severe drought was recorded during the Kharif-1 and Kharif-2 seasons and most crops were affected in these two seasons. No severe or moderate drought was recorded during the Rabi season. The results showed that monsoon crops were severely affected severely by extreme and severe droughts during the Kharif-2 season. Eventually, the people remain jobless during the monsoon, and they experience food shortages like monga. Several obstacles were recorded during the season, including delayed preparation of land, sowing, transplanting and other farming activities because of monsoon droughts. This study revealed that very frequently, mild dryness occurs in winter, but crop loss is minimal. The scale and occurrence of extreme droughts are more frequent during monsoons and reduce crop yields, affecting livelihoods in the study area. Seasonal drought affects cropping patterns as well as reduce crop yields. Originality/value: The outcome of this study derived from the secondary data and field data.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | cropping season; seasonal drought; standardized precipitation index |
| Index terms: | Bangladesh, duration, determinant, land, drought, secondary data, methodology, shortages, precipitation, rainfall, crop, winter |
| Subjects: | economic analysis, real estate economics, climate science, data collection methods, risk assessment, environmental hazards, project controls, Geography, land management, research methods |
| Topics: | Research Practice, Geographical Context, Sustainability, Risk Management, Urban Studies, Time Control |
| Descriptive scope: | 4 PCTE |
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