Hydrological characterization and social dynamics of polders in the Bengal Delta [Abstract only]

Simple item page
cg.contributor.affiliationInternational Water Management Instituteen_US
cg.contributor.donorCGIAR Trust Funden_US
cg.contributor.initiativeAsian Mega-Deltasen_US
cg.coverage.countryBangladeshen_US
cg.coverage.iso3166-alpha2BDen_US
cg.coverage.regionSouthern Asiaen_US
cg.coverage.subregionBengal Deltaen_US
cg.coverage.subregionGanges-Brahmaputra Deltaen_US
cg.creator.identifierMahesh Jampani: 0000-0002-8925-719Xen_US
cg.creator.identifierkarthikeyan matheswaran: 0000-0001-7377-0629en_US
cg.identifier.iitathemeNUTRITION & HUMAN HEALTHen_US
cg.identifier.iwmilibraryH052357en_US
cg.identifier.urlhttps://agu.confex.com/agu/fm23/meetingapp.cgi/Paper/1450505en_US
cg.river.basinGANGESen_US
dc.contributor.authorJampani, Maheshen_US
dc.contributor.authorMatheswaran, Karthikeyanen_US
dc.date.accessioned2023-12-15T10:41:52Zen_US
dc.date.available2023-12-15T10:41:52Zen_US
dc.identifier.urihttps://hdl.handle.net/10568/135433en_US
dc.titleHydrological characterization and social dynamics of polders in the Bengal Delta [Abstract only]en_US
dcterms.abstractPolders in the floodplains of the Ganges-Brahmaputra delta in Bangladesh play a critical role in supporting intensive agricultural production and the livelihoods of around eight million people. Polderization is promoted to reduce environmental vulnerabilities against flood inundation, coastal erosion, and salinity intrusion. These land areas are low-lying islands consisting mainly of alluvial sediment deposits, and almost half (~1.2 million ha) of the coastal zone in the region is polderized. Agriculture is the primary reason for the polderization of the region, where paddy rice is the major irrigated crop. Around 139 polders in Bangladesh spread across the Gangetic-Brahmaputra delta region, and they altered the delicate balance between human activity and the floodplains' natural hydrological process, resulting in numerous evolving problems. These include the geomorphological evolution of the river channels and flood plains, water logging and drainage congestion within the polder system, sea-level rise, tidal surges, and salinity intrusion. Coastal and inland salinity is a significant problem in these polders, often influencing crop yields and further agricultural productivity and freshwater availability. We explicitly look at two polders to evaluate the distinct socio-hydrological characteristics of these systems. We used several secondary data sources and literature (grey and scientific) to evaluate the hydrological characteristics, groundwater heterogeneity and social dynamics to understand and evaluate the underlying mechanisms and intrinsic links between systems that influence water balance, saline water intrusion, and crop production. The initial results highlight the complex dynamics of the polder system, often influenced by water availability, irrigated water use, seasonality, and, above all, stakeholders' perceptions. Overall, this work provides an improved understanding of the biophysical dynamics and social linkages and sets the basis for implementing a larger detailed socio-hydrological framework.en_US
dcterms.accessRightsOpen Accessen_US
dcterms.bibliographicCitationJampani, Mahesh; Matheswaran, Karthikeyan. 2023. Hydrological characterization and social dynamics of polders in the Bengal Delta [Abstract only]. Paper presented at the American Geophysical Union Annual Meeting 2023 (AGU23), San Francisco, CA, USA and Online, 11-15 December 2023. 2p. en_US
dcterms.issued2023-12-16en_US
dcterms.languageenen_US
dcterms.licenseOtheren_US
dcterms.subjectfloodplainsen_US
dcterms.subjectreclaimed landen_US
dcterms.subjectlivelihoodsen_US
dcterms.subjectagricultural productionen_US
dcterms.subjectsedimentationen_US
dcterms.subjectgeomorphologyen_US
dcterms.subjectwaterloggingen_US
dcterms.subjectwater availabilityen_US
dcterms.typeConference Paperen_US

Files

License bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.75 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

IWMI Conference Chapters or Papers
CGIAR Initiative on Asian Mega-Deltas
Digital Innovation (DIG)