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Erschienen in: Population and Environment 3-4/2022

11.10.2022 | Brief Report

Salinization of the Bangladesh Delta worsens economic precarity

verfasst von: Joyce Chen, Valerie Mueller, Fabien Durand, Erika Lisco, Qing Zhong, V. Raju Sherin, A. K. M. Saiful Islam

Erschienen in: Population and Environment | Ausgabe 3-4/2022

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Abstract

Anthropogenic environmental changes are having complex effects on all aspects of the hydrological cycle. In estuarine areas, these factors are coalescing to increase saline contamination. Between 2006 and 2007, coastal Bangladesh experienced a sudden and dramatic increase in water salinity, with the saline front shifting inland by roughly 20km. We use this exceptional event to explore the impact of salinity on economic activity and agricultural production. Our results indicate that locations that experienced a sudden increase in water salinity incurred a 33% reduction in economic activity, as measured by nightlight intensity. This coincides with a decline in the cultivation of high-yielding rice varieties, which are not salt tolerant, as well as the removal of land from production. There is no robust evidence that changes in population drove these losses in economic activity. While sea level rise may be only one factor in this shift of the salinity front, our findings suggest that the future impacts of sea level rise have the potential to be quite large and may not be limited to coastline locations.

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Fußnoten
1
Although this technique may seem less familiar to fields external to political science, this is now well-documented as an acceptable approach to pre-process data (Huntington-Klein, 2022).
 
2
All models applying the pre-processed cross-sectional data from the agricultural census use weights produced from a separate entropy balancing procedure. It includes union-level EVI and nightlight intensity variables at baseline and the household-level total owned land variable provided by the agricultural census data to provide weights that enable the comparison and newly brackish groups to be more comparable in observable characteristics.
 
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Metadaten
Titel
Salinization of the Bangladesh Delta worsens economic precarity
verfasst von
Joyce Chen
Valerie Mueller
Fabien Durand
Erika Lisco
Qing Zhong
V. Raju Sherin
A. K. M. Saiful Islam
Publikationsdatum
11.10.2022
Verlag
Springer Netherlands
Erschienen in
Population and Environment / Ausgabe 3-4/2022
Print ISSN: 0199-0039
Elektronische ISSN: 1573-7810
DOI
https://doi.org/10.1007/s11111-022-00411-2

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