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Does land use change, waterlogging, and salinity impact on sustainability of agriculture and food security? Evidence from southwestern coastal region of Bangladesh

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Abstract

The United Nation’s sustainable development goal is to achieve zero hunger by 2030 and achieve food security throughout the world. In this context, we analyze the anthropogenic factors such as land use and land cover change, waterlogging, and soil salinity which combinedly affecting the agricultural sustainability and threatening the food security in the southwestern region of Bangladesh. Landsat satellite images from 1991 to 2021 were used to detect the changes and identify how anthropogenic activities have altered the land cover and land use and impede the sustainability of agriculture. Terra MODIS vegetation indices from 2000 to 2020 were used to detect waterlogging. Soil salinity was measured from the soil samples and vegetation soil salinity index (VSSI) from Landsat images. Findings of the study revealed that agricultural lands have decreased because of an increase in shrimp farming. Waterlogging and soil salinity are increasing due to increased shrimp farms also for poor drainage infrastructure and human modification. The area of agricultural land in 2011 was 19,657.12 acres,12,750.14 acres, and 38,774.70 acres in Keshabpur, Abhaynagar, and Manirampur, which changed to 12,668.70 acres (−36%), 7151.27 acres (−44%), and 32,809.30 acres (−16%) in 2021. Our hotspot analysis reveals that very high vulnerability to waterlogging due to floods was highest in Manirampur (15,464.09 acres). Finally, we proposed a new framework called IDCEM designed for monitoring land-use change, salinity, and waterlogging in the interior coast, which will indirectly help to promote food security and help in achieving sustainable development goal.

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The datasets of the current study are available from the corresponding author on reasonable request.

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Contributions

ZA conceptualized and contributed to the preliminary concept of the study under the supervision of SA. ZA collected the primary data and completed all investigations, formal analysis, and statistical analysis. ZA drafted the initial draft copy of the manuscript after that SA completed all necessary revisions and editing in the manuscript. Finally, ZA and SA approved this final version.

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Correspondence to Zia Ahmed.

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This manuscript does not contain any studies with animals performed by any of the authors.

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This study is not associated with any type of survey or interview; for this reason consent to participate is not applicable.

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This study is not associated with any type of survey or interview; for this reason consent to publish is not applicable.

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The authors declare no competing interests.

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Ahmed, Z., Ambinakudige, S. Does land use change, waterlogging, and salinity impact on sustainability of agriculture and food security? Evidence from southwestern coastal region of Bangladesh. Environ Monit Assess 195, 74 (2023). https://doi.org/10.1007/s10661-022-10673-w

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  • DOI: https://doi.org/10.1007/s10661-022-10673-w

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