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Duong Bui
Vietnam National Center for Water Resources Planning and Investigation (NAWAPI), No. 93/95, Vu Xuan Thieu Street, Long Bien District, Hanoi City, Vietnam

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Journal article
Published: 15 May 2021 in Sustainability
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The development of a coherent and coordinated policy for the management of large socio-agricultural systems, such as the Mekong delta in southern Vietnam, is reliant on aligning the development, delivery, and implementation of policy on national to local scales. Effective decision making is linked to a coherent, broadly-shared vision of the strategic management of socio-agricultural systems. However, when policies are ambiguous, and at worst contradictory, long-term management and planning can consequently suffer. These potential adverse impacts may be compounded if stakeholders have divergent visions of the current and future states of socio-agricultural systems. Herein we used a transferable, scenario-based methodology which uses a standard quadrant matrix in order to explore both anticipated and idealized future states. Our case study was the Mekong delta. The scenario matrix was based upon two key strategic choices (axis) for the delta, derived from analysis of policy documents, literature, stakeholder engagement, and land use models. These are: (i) who will run agriculture in the future, agri-business or the established commune system; and (ii) to what degree sustainability will be incorporated into production. During a workshop meeting, stakeholders identified that agri-business will dominate future agricultural production in the delta but showed a clear concern that sustainability might consequently be undermined despite policy claims of the contrary. As such, our study highlights an important gap between national expectations and regional perspectives. Our results suggest that the new development plans for the Mekong delta (which comprise a new Master Plan and a new 5-year socio-economic development plan), which emphasize agro-business development, should adopt approaches that address concerns of sustainability as well as a more streamlined policy formulation and implementation that accounts for stakeholder concerns at both provincial and national levels.

ACS Style

Craig Hutton; Oliver Hensengerth; Tristan Berchoux; Van Tri; Thi Tong; Nghia Hung; Hal Voepel; Stephen Darby; Duong Bui; Thi Bui; Nguyen Huy; Daniel Parsons. Stakeholder Expectations of Future Policy Implementation Compared to Formal Policy Trajectories: Scenarios for Agricultural Food Systems in the Mekong Delta. Sustainability 2021, 13, 5534 .

AMA Style

Craig Hutton, Oliver Hensengerth, Tristan Berchoux, Van Tri, Thi Tong, Nghia Hung, Hal Voepel, Stephen Darby, Duong Bui, Thi Bui, Nguyen Huy, Daniel Parsons. Stakeholder Expectations of Future Policy Implementation Compared to Formal Policy Trajectories: Scenarios for Agricultural Food Systems in the Mekong Delta. Sustainability. 2021; 13 (10):5534.

Chicago/Turabian Style

Craig Hutton; Oliver Hensengerth; Tristan Berchoux; Van Tri; Thi Tong; Nghia Hung; Hal Voepel; Stephen Darby; Duong Bui; Thi Bui; Nguyen Huy; Daniel Parsons. 2021. "Stakeholder Expectations of Future Policy Implementation Compared to Formal Policy Trajectories: Scenarios for Agricultural Food Systems in the Mekong Delta." Sustainability 13, no. 10: 5534.

Journal article
Published: 27 April 2020 in Journal of Hydrology
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A novel approach of combining regionalization and satellite observations of various hydrological variables were employed to significantly improve prediction of streamflow signatures at “geopolitically ungauged” basins. Using the proposed step-wise physiography and climate-based regionalization approach, the model performance at ungauged basins reached 80% of performance of locally calibrated parameters and significantly outperformed the global regionalization parameters. The proposed water level based flow correlation was found to help diagnose models and outperform the existing performance metrics of simulated water levels at ungauged basins. The study also set up the first multi-national, multi-catchment hydrological model in the Greater Mekong region, the top global biodiversity and major disaster risk hotspot in the world through sequential and iterative refinement of the existing global hydrological model. New model setup or existing models in the poorly-gauged and ungauged basins could benefit from the proposed approach to predict and evaluate models at ungauged basins.

ACS Style

Tien L.T. Du; Hyongki Lee; Duong D. Bui; Berit Arheimer; Hong-Yi Li; Jonas Olsson; Stephen Darby; Justin Sheffield; Donghwan Kim; Euiho Hwang. Streamflow prediction in “geopolitically ungauged” basins using satellite observations and regionalization at subcontinental scale. Journal of Hydrology 2020, 588, 125016 .

AMA Style

Tien L.T. Du, Hyongki Lee, Duong D. Bui, Berit Arheimer, Hong-Yi Li, Jonas Olsson, Stephen Darby, Justin Sheffield, Donghwan Kim, Euiho Hwang. Streamflow prediction in “geopolitically ungauged” basins using satellite observations and regionalization at subcontinental scale. Journal of Hydrology. 2020; 588 ():125016.

Chicago/Turabian Style

Tien L.T. Du; Hyongki Lee; Duong D. Bui; Berit Arheimer; Hong-Yi Li; Jonas Olsson; Stephen Darby; Justin Sheffield; Donghwan Kim; Euiho Hwang. 2020. "Streamflow prediction in “geopolitically ungauged” basins using satellite observations and regionalization at subcontinental scale." Journal of Hydrology 588, no. : 125016.

Journal article
Published: 01 October 2018 in Remote Sensing
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As the limitation of rainfall collection by ground measurement has been widely recognized, satellite-based rainfall estimate is a promising high-resolution alternative in both time and space. This study is aimed at exploring the capacity of the satellite-based rainfall product Tropical Rainfall Measurement Mission (TRMM) Multi-satellite Precipitation Analysis (TMPA), including 3B42V7 research data and its real-time 3B42RT data, by comparing them against data from 29 ground observation stations over the lower part of the Red–Thai Binh River Basin from March 2000 to December 2016. Various statistical metrics were applied to evaluate the TMPA products. The results showed that both 3B42V7 and 3B42RT had weak relationships with daily observations, but 3B42V7 data had strong agreement on the monthly scale compared to 3B42RT. Seasonal analysis showed that 3B42V7 and 3B42RT underestimated rainfall during the dry season and overestimated rainfall during the wet season, with high bias observed for 3B42RT. In addition, detection metrics demonstrated that TMPA products could detect rainfall events in the wet season much better than in the dry season. When rainfall intensity was analyzed, both 3B42V7 and 3B42RT overestimated the no rainfall event during the dry season but underestimated these events during the wet season. Finally, based on the moderate correlation between climatology–topography characteristics and correction factors of linear-scaling (LS) approach, a set of multiple linear models was developed to reduce the error between TMPA products and the observations. The results showed that climatology–topography-based linear-scaling approach (CTLS) significantly reduced the percentage bias (PBIAS) score and moderately improved the Nash–Sutcliffe efficiency (NSE) score. The finding of this paper gives an overview of the capacity of TMPA products in the lower part of the Red–Thai Binh River Basin regarding water resource applications and provides a simple bias correction that can be used to improve the correctness of TMPA products.

ACS Style

Hung Manh Le; Jessica R. P. Sutton; Duong Du Bui; John D. Bolten; Venkataraman Lakshmi. Comparison and Bias Correction of TMPA Precipitation Products over the Lower Part of Red–Thai Binh River Basin of Vietnam. Remote Sensing 2018, 10, 1582 .

AMA Style

Hung Manh Le, Jessica R. P. Sutton, Duong Du Bui, John D. Bolten, Venkataraman Lakshmi. Comparison and Bias Correction of TMPA Precipitation Products over the Lower Part of Red–Thai Binh River Basin of Vietnam. Remote Sensing. 2018; 10 (10):1582.

Chicago/Turabian Style

Hung Manh Le; Jessica R. P. Sutton; Duong Du Bui; John D. Bolten; Venkataraman Lakshmi. 2018. "Comparison and Bias Correction of TMPA Precipitation Products over the Lower Part of Red–Thai Binh River Basin of Vietnam." Remote Sensing 10, no. 10: 1582.

Journal article
Published: 18 May 2018 in Water
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Characterization of droughts using satellite-based data and indices in a steep, highly dynamic tropical catchment, like Vu Gia Thu Bon, which is the most important basin in central Vietnam, has remained a challenge for many years. This study examined the six widely used vegetation indices (VIs) to effectively monitor droughts that are based on their sensitivity with precipitation, soil moisture, and their linkage with the impacts on agricultural crop production and forest fires. Six VIs representing the four main groups, including greenness-based VIs (Vegetation Condition Index), water-based VIs (Normalized Difference Water Index, Land Surface Water Index), temperature-based VIs (Temperature Condition Index), and combined VIs (Vegetation Health Index, Normalized Difference Drought Index) were tested using MODIS data from January 2001 to December 2016 with the support of cloud-based Google Earth Engine computational platform. Results showed that droughts happened almost every year, but with different intensity. Vegetation stress was found to be mainly attributed to precipitation in the rice paddy fields and to temperature in the forest areas. Findings revealed that combined vegetation indices were more sensitive drought indicators in the basin, whereas their performance was different by vegetation type. In the rice paddy fields, NDDI was more sensitive to precipitation than other indices; it better captured droughts and their impacts on crop yield. In the forest areas, VHI was more sensitive to temperature, and thus had better performance than other VIs. Accordingly, NDDI and VHI were recommended for monitoring droughts in the agricultural and forest lands, respectively. The findings from this study are crucial to map drought risks and prepare an effective mitigation plan for the basin.

ACS Style

Tien Le Thuy Du; Duong Du Bui; Minh Duc Nguyen; Hyongki Lee. Satellite-Based, Multi-Indices for Evaluation of Agricultural Droughts in a Highly Dynamic Tropical Catchment, Central Vietnam. Water 2018, 10, 659 .

AMA Style

Tien Le Thuy Du, Duong Du Bui, Minh Duc Nguyen, Hyongki Lee. Satellite-Based, Multi-Indices for Evaluation of Agricultural Droughts in a Highly Dynamic Tropical Catchment, Central Vietnam. Water. 2018; 10 (5):659.

Chicago/Turabian Style

Tien Le Thuy Du; Duong Du Bui; Minh Duc Nguyen; Hyongki Lee. 2018. "Satellite-Based, Multi-Indices for Evaluation of Agricultural Droughts in a Highly Dynamic Tropical Catchment, Central Vietnam." Water 10, no. 5: 659.

Articles
Published: 04 July 2017 in International Journal of Water Resources Development
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To address drought risks and risks of water shortages in cities it is essential to build resilience. Acknowledging that this is a process initiated by actors and institutions, this article presents a framework to analyze dynamics in the governance system for urban water services. The framework is applied to Da Nang, a drought-prone city in central Vietnam, to explore the elements and factors in the urban water sector that enhance or inhibit resilience to drought and find potential strategies to build resilience. The study finds that the framework has been helpful in identifying where changes and systematic interventions are needed to enhance resilience.

ACS Style

Duong Bui Du; Duong D. Bui; Joost Buurman; Xuan T. Quach. Towards adaptive governance for urban drought resilience: the case of Da Nang, Vietnam. International Journal of Water Resources Development 2017, 34, 597 -615.

AMA Style

Duong Bui Du, Duong D. Bui, Joost Buurman, Xuan T. Quach. Towards adaptive governance for urban drought resilience: the case of Da Nang, Vietnam. International Journal of Water Resources Development. 2017; 34 (4):597-615.

Chicago/Turabian Style

Duong Bui Du; Duong D. Bui; Joost Buurman; Xuan T. Quach. 2017. "Towards adaptive governance for urban drought resilience: the case of Da Nang, Vietnam." International Journal of Water Resources Development 34, no. 4: 597-615.