Effect of Long Term Brackish Water Submergence of Agricultural Land in Shrimp Cultivation

Bhuiyan, M.R.; Ahsan, M.; Biswas, S.N.

doi:10.53808/kus.2001.3.1.0108-ls

Cited by 2 publications

(1 citation statement)

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“…But in brackish water shrimp farm soils remain saline throughout the year and no decreasing tendency is observed with soil depth. A clear evidence of salinization is observed in brackish water shrimp farm with time (Bhuiyan et al, 2001). Water salinity intensity: Studies show a increase trend of river water salinity in south western part of the country.…”

Section: Soil Salinity Intensitymentioning

confidence: 95%

Soil and Water Salinity, Their Management in Relation to Climate Changes in Coastal Areas of Bangladesh

Ahsan

Bhuiyan

2010

Khulna Univ. Stud.

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Climate change due to global warming and its negative consequence on environment and agro ecosystem is a serious concern of global community of current age. To assess the present soil and water salinity status in coastal areas a soil survey work following standard methods has been completed by Soil Resource Development Institute (SRDI) in 2009. It was observed that out of 2.86 million hectares of coastal and offshore lands about 1.056 million ha of arable lands are affected by varying degrees of salinity. A comparative study of the salt affected area between 1973 to 2009 showed that about 0.223 million ha (26.7%) new land was affected by various degree of salinity during last four decades . It was also observed that about 0.035 million hectares of land (3.5%) new land was affected by various degrees of salinity during last 9 years only (2000-2009). High amount of S and high pH may be the possible causes for P deficiency in coastal areas. Coastal soils are rich in micronutrient elements except Zn. In shrimp cultivated areas flooding with high saline water for a considerable time in each year causing higher soil salinity in all the horizons. A long term soil and water salinity monitoring data of SRDI shows that soil and water salinity between 1991 and 2008 has increased at least 2-10 times. Several common and location specific agricultural constraints have been identified in the field through field investigation/observation and farmer’s interview. Proper fertilizer management practices need to be addressed in coastal saline areas.

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Section: Soil Salinity Intensitymentioning

confidence: 95%

Soil and Water Salinity, Their Management in Relation to Climate Changes in Coastal Areas of Bangladesh

Ahsan

Bhuiyan

2010

Khulna Univ. Stud.

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Modeling alternative mitigation strategies of salinity intrusion on food production by integrating SWOT and TEAM decision models

Kitazawa

Mannan²,

Islam

et al. 2015

Model. Earth Syst. Environ.

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Salinity intrusion is one of the major concerns for the coastal people of Bangladesh. The impacts of salinity intrusion on food production of coastal districts are likely to severe. Since the extensive shrimp farming cultivation started in the 1970s, it has spread throughout the coastal region, increasing soil and water salinity levels. A mixed-method approach was employed by coupling with SWOT (strength, weakness, opportunities and threats) models for identifying alternative mitigation strategies of salinity intrusion on food production at coastal districts in Bangladesh. A variety of stakeholders and policymakers were first interviewed, being asked to participate in an exercise identifying their perceptions of the greatest challenges facing coastal districts people due to salinity intrusion on food production. The study results reveal that large part of the land of coastal districts intrude with high salinity and a little part is under moderate and low salinity. Therefore, the agricultural land is decreasing and shifting into shrimp farming and settlements. The salinity intrusion affects the soil surface is to decrease food crop production of the study areas about approximately 0.45 metric tons every year. The integrating SWOT and TEAM models analysis were shown that the indigenous agricultural systems, NGOs activities and community people adaptive potency were the strength whereas sensitive environment and absence of strict law of environmental management and implication gap of policy options were found to be the weaknesses. Foreign aid and research results and shrimp export facilities were found to be the main opportunities. Land scarcity, food security issues and political interventions were found to be the main threats. The SWOT model identified several alternatives mitigation strategies for salinity intrusion in coastal districts context have been identified which are funding opportunities, alternative income generation, sustainable shrimp aquaculture, salinity tolerant crop varieties, climate smart agriculture and environmental education and research etc. In the end, it is a case study that might shed some useful schemes combining scientific assessment models such as SWOT and TEAM, which could feed evidence-based decision-making processes for generating alternatives mitigation strategies of environmental threats.

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Effect of Long Term Brackish Water Submergence of Agricultural Land in Shrimp Cultivation

Cited by 2 publications

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Soil and Water Salinity, Their Management in Relation to Climate Changes in Coastal Areas of Bangladesh

Soil and Water Salinity, Their Management in Relation to Climate Changes in Coastal Areas of Bangladesh

Modeling alternative mitigation strategies of salinity intrusion on food production by integrating SWOT and TEAM decision models

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