Sustainability of groundwater use for irrigation of dry-season crops in northwest Bangladesh

Dey, Nepal C.; Saha, Ratnajit; Parvez, Mahmood; Bala, Sujit Kumar; Islam, Akm Saiful; Paul, Joyanta K.; Hossain, M. Monowar

doi:10.1016/j.gsd.2017.02.001

Cited by 102 publications

(53 citation statements)

References 16 publications

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“…Present findings indicate that a higher percentage of corresponding point of use (PoU) contain a higher number of coliform bacteria than point of sources (PoS). Saha et al (2018) and Dey et al (2017a) found that shallow aquifers are more microbiologically contaminated than greater depth aquifer. Around 40% of shallow tubewells in Tala Upazila (the same study area), were found to be contaminated with fecal organisms (Saha et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

Geogenic Arsenic and Microbial Contamination in Drinking Water Sources: Exposure Risks to the Coastal Population in Bangladesh

Saha

Dey

Rahman

et al. 2019

Front. Environ. Sci.

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Section: Discussionmentioning

confidence: 99%

Geogenic Arsenic and Microbial Contamination in Drinking Water Sources: Exposure Risks to the Coastal Population in Bangladesh

Saha

Dey

Rahman

et al. 2019

Front. Environ. Sci.

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“…Groundwater is the main source of the water system in many countries, including Bangladesh, for dry winter paddy fields irrigation. In any case, this significant asset is being excessively misused and drained past regular renewal of aquifers from precipitation and river stream is inadequate [51]. Groundwater extraction for irrigation during rice cultivation (especially in dry season irrigated rice) has been increased sharply in Bangladesh since the expansion of area under cultivation through irrigation.…”

Section: Impact Of Climate Change On Groundwater and Irrigation Aspectsmentioning

confidence: 99%

Climate Change Impact on Agriculture and Related Sustainable Land Management Practices in Bangladesh – A Review

Hossain

Amin

Sultana

et al. 2020

IJECC

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Sustainable land management (SLM) is an effective climate adaptation technique in the present world. Bangladesh is listed in long-term Climate Risk Index 2019 due to its unicorn geographic features (e.g. low-lying riparian lands, big rivers, dense population and coastal settings). The livelihoods of Bangladesh are directly or indirectly linked to agricultural practices and or agribusiness. Many studies revealed that climate change-induced natural calamities (e.g. rainfall and temperature variability, sea level rise, flood, cyclone, drought, groundwater depletion, salt intrusion) unfavorably effect on agricultural production and livelihood activities and these are making critical food insecurity situation. Thus, identification and implementation of SLM practices to maintain food security of the bursting population are a prerequisite in Bangladesh. In this study, we have compiled the prospective SLM practices based on land management objective, land user requirements, crop and land suitability by reviewing peer-reviewed articles and grey literature. The potential SLM identified includes land resource conservation, erosion control, tillage technology, soil fertility management, vegetation management, efficient groundwater use, salinity-drought adaptations, land zoning and site-specific climate-smart agriculture. Among these SLM practices, the cultivation of suitable crop based on land quality and resource availability requires knowledge of decision support components involving the stakeholders for meaningful implementation of SLM. We proposed conceptual decision support components (e.g. land user, land quality, crop suitability, site-specific management, capital and governance) that would be the basis for the development and implementation of SLM towards land users and or farmers. The motivation of farmers through efficient extension activity and agri-governance for optimized land management can lead to minimizing the climate-induced vulnerability in agriculture. We concluded that the identified SLM practices, if implemented by adequate decision supports, SLM will help to achieve agricultural production as required by the sustainable Millennium Development Goals in Bangladesh.

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“…The adverse effects of drought are normally increased if drought occurs in an agrarian and densely populated region, such as South Asia, where millions of people are directly or indirectly dependent on diverse agricultural activities [11]. However, the severity of drought in some parts of South Asia such as in Bangladesh has been extensively reduced by intensive irrigation, using easily available but slowly declining underground water for the cultivation of high yield variety (HYV) boro rice [12].…”

Section: Introductionmentioning

confidence: 99%

An Integrated Method for Identifying Present Status and Risk of Drought in Bangladesh

et al. 2020

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The occurrence and severity of agricultural droughts may not be dependent upon climatic variables alone. Rather increasingly, drought is affected by human interventions such as irrigation. Anthropogenic activity has introduced uncertainty in the assessment of current drought and future drought risk in many parts of the world; neither climatic nor remote sensing data alone are able to assess drought conditions effectively. In response, we present a simple approach to assess drought by combining a remote sensing-based drought index, the Temperature Vegetation Dryness Index (TVDI), climate data (i.e., rainfall and temperature), and field observations to evaluate recent drought conditions in northwestern Bangladesh (NWB). Applying this approach, we gained five insights: (i) the TVDI successfully indicated the drought conditions of NWB and agrees with field observations, (ii) the integrated use of TVDI and climate data (such as rainfall and temperature) provides the best understanding of the difference between meteorological drought and droughts resulting from surface moisture conditions, (iii) the TVDI results agree with rainfall data (r2 = 0.40 in March and r2 = 46 in April) in a part of the study area (NWB) where irrigation is not available, (iv) the TVDI can be used along with climate data to predict the potential risk of drought, and (v) while meteorological drought exists due to low rainfall and high temperature in this NWB in pre-monsoon season, because of widespread irrigation practices, meteorological drought is unable to trigger agricultural drought over most parts of the study area. The findings imply that there is a potential risk of drought in NWB, since any disruption of irrigation water supply could trigger a severe agricultural drought over the whole region. This is similar to what is currently observed over a small part of NWB.

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Sustainability of groundwater use for irrigation of dry-season crops in northwest Bangladesh

Cited by 102 publications

References 16 publications

Geogenic Arsenic and Microbial Contamination in Drinking Water Sources: Exposure Risks to the Coastal Population in Bangladesh

Geogenic Arsenic and Microbial Contamination in Drinking Water Sources: Exposure Risks to the Coastal Population in Bangladesh

Climate Change Impact on Agriculture and Related Sustainable Land Management Practices in Bangladesh – A Review

An Integrated Method for Identifying Present Status and Risk of Drought in Bangladesh

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