Development of tidal areas: some principles and issues towards sustainability

Hyun, Park Sang; Simm, J.D.; Ritzema, H.P.

doi:10.1002/ird.474

Cited by 4 publications

(1 citation statement)

References 2 publications

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“…The coastal zone comprises only 3% of the earth's surface and accommodate 60% of the world's population, a figure set to increase to 80% by 2050 [ Hyun et al , ]. Worldwide, about 600 million people currently inhabit low‐elevation coastal zones that will be affected by progressive salinization [ Dasgupta et al , ].…”

Section: Introductionmentioning

confidence: 99%

Modeling daily soil salinity dynamics in response to agricultural and environmental changes in coastal Bangladesh

et al. 2017

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Understanding the dynamics of salt movement in the soil is a prerequisite for devising appropriate management strategies for land productivity of coastal regions, especially low-lying delta regions, which support many millions of farmers around the world. At present, there are no numerical models able to resolve soil salinity at regional scale and at daily time steps. In this research, we develop a novel holistic approach to simulate soil salinization comprising an emulator-based soil salt and water balance calculated at daily time steps. The method is demonstrated for the agriculture areas of coastal Bangladesh (∼20,000 km 2 ). This shows that we can reproduce the dynamics of soil salinity under multiple land uses, including rice crops, combined shrimp and rice farming, as well as non-rice crops. The model also reproduced well the observed spatial soil salinity for the year 2009. Using this approach, we have projected the soil salinity for three different climate ensembles, including relative sea-level rise for the year 2050. Projected soil salinity changes are significantly smaller than other reported projections. The results suggest that inter-season weather variability is a key driver of salinization of agriculture soils at coastal Bangladesh. Plain Language SummaryIn this manuscript, we developed a novel "regional" soil salinity model to assess long term (days to decades) changes in coastal agricultural lowlands and we have demonstrate it in coastal Bangladesh. This model can reproduce the soil salinity time series under multiple land uses, including rice crops, combined shrimp and rice farming, as well as non-rice crops. We are now confident that the model structure is adequate to explore future scenarios of soil salinization under different climate and agriculture practices.

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Section: Introductionmentioning

confidence: 99%

Modeling daily soil salinity dynamics in response to agricultural and environmental changes in coastal Bangladesh

et al. 2017

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Collaborative Research Approaches to Cope With Uncertainty of Water Management Practices in Tidal Areas

Ritzema

2013

Irrigation and Drainage

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Throughout the world, tidal areas are being developed. The initial development is generally for agriculture, often in combination with flood protection. The development focus in tidal areas is, however, gradually moving to ports, harbours, transportation routes, industries, and aquaculture, housing and recreation facilities. Models are often used to develop strategies for sustainable land and water practices. These models normally require long-time data sets that are often not available in emerging countries, thus new ways have to be found to address the traditionally validated simulation models. This paper presents case studies in Surinam, India and Vietnam in which the traditional validation process was replaced by joint plausibility discussions and shared vision building in order to improve the understanding of cause-effect relationships and proposals for water management measures. The aim was to match the tacit knowledge of the local stakeholders with explicit scientific knowledge in order to create a mutual basis for an integrated approach as opposed to single-issue measures, and a mutual agreement on follow-up steps needed to sustain both the livelihood of the people as well as natural resource functions. The collaborative modelling approach proved to be a useful tool to obtain a consensus of opinion among the stakeholders. RÉSUMÉPartout dans le monde, des zones sous contrôle de la marée sont en cours d'élaboration. Le développement initial est généralement l'agriculture, souvent en combinaison avec la protection contre les inondations. L'accent sur le développement dans les zones de marée est cependant de plus en plus orienté vers les ports, les voies de transport, les industries, l'aquaculture, le logement et les installations récréatives. Les modèles sont souvent utilisés pour élaborer des stratégies de gestion durable de l'eau et les pratiques afférentes. Ces modèles exigent normalement des ensembles de données de longue durée qui souvent ne sont pas disponibles dans les pays émergents; ainsi de nouveaux moyens doivent être trouvés pour nourrir les modèles de simulation traditionnels. Cet article a présenté des études de cas au Surinam, en Inde et au Vietnam où le processus de validation traditionnel a été remplacé par des discussions conjointes et l'élaboration de visions partagées afin d'améliorer la compréhension des relations de cause à effet et les propositions de mesures de gestion de l'eau. L'objectif était de faire correspondre les connaissances tacites des acteurs locaux aux connaissances scientifiques explicites dans le but de créer la base de réciprocité d'une approche intégrée, par opposition à une approche imposée, et un accord consenti sur les mesures de suivi nécessaires pour soutenir à la fois les moyens de subsistance des populations ainsi que les fonctionnalités des ressources naturelles. L'approche de modélisation collaborative s'est avérée être un outil utile pour obtenir un consensus d'opinions entre les parties prenantes.

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Modeling the effect of salt-affected soil on water balance fluxes and nitrous oxide emission using modified DNDC

Shah

Wang

Hao

et al. 2021

Journal of Environmental Management

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Development of tidal areas: some principles and issues towards sustainability

Cited by 4 publications

References 2 publications

Modeling daily soil salinity dynamics in response to agricultural and environmental changes in coastal Bangladesh

Modeling daily soil salinity dynamics in response to agricultural and environmental changes in coastal Bangladesh

Collaborative Research Approaches to Cope With Uncertainty of Water Management Practices in Tidal Areas

Modeling the effect of salt-affected soil on water balance fluxes and nitrous oxide emission using modified DNDC

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