Abstract
This article presents a mathematical model of salinity invasion in agricultural land adjacent to coastal shrimp farming water body. There is an expanse of coastline with fragile estuarine ecosystem in south-east Asia, where unscientific aqua-cultural activity has posed a threat to hydrological dynamics of the area. Soil salinization beyond a threshold level results in dwindling crop yield, which in turn affects the economical and ecological stability of the region. Here, a mathematical model of salt water flow from shrimp farm to adjacent farmland through porous soil is studied using partial differential equation. The analytical results are deduced which can serve as precursor for any similar model. The mathematical solution is compared with numerical simulation results. Further, the change in salinity levels due to temperature and layout change is studied and some observations based on the results are proposed. It is observed that increase in width of guard wall between pond and adjacent farmland is very effective in reducing salinity level of soil.
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Conceptualization: SD, PD; Methodology: SD; Formal analysis and investigation: SD; Writing—original draft preparation: SD; Writing—review and editing: SD, PD; Supervision: PD.
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Das, S., Das, P. Coastal shrimp aquaculture and agriculture: a mathematical model on soil salinity. Model. Earth Syst. Environ. 8, 3293–3304 (2022). https://doi.org/10.1007/s40808-021-01297-z
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DOI: https://doi.org/10.1007/s40808-021-01297-z