Trung Nguyen Hieu | Can Tho University (original) (raw)

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Papers by Trung Nguyen Hieu

Journal on Chain and Network Science, 2006

This paper presents the applications of Geoinformatics System (GIS) in three different land-use p... more This paper presents the applications of Geoinformatics System (GIS) in three different land-use planning (LUP) approaches. The participatory LUP (PLUP) which strongly consider the local people perceptions for land utilizations, the guidelines for LUP by FAO enhanced with multi-criteria evaluation (FAO-MCE), and the land-use planning and analysis system (LUPAS) using interactive multiple-goal linear programming. The case study was two villages in the coastal area of the Mekong Delta (MD), Vietnam. The land use of the studied area is diverse, quickly shifting and strongly contrasting. The contrast is not only in terms of resources but also in economic profitability and environmental sustainability. GIS plays an important role in the successful of these three LUP approaches. In PLUP, GIS help to integrate the acquired spatial and attribute data from farmer discussions and cross-section walks, and to analyses the changes in not only biophysical, land cover changes but also farmers' perception changes in land utilizations. The conflicts in resources uses, mainly between agriculture and aquaculture, were also mapped and described. In FAO-MCE, a GIS was used to combine biophysical and socio-economic characteristics for land evaluation. A multi-criteria evaluation tool was developed to support the decision maker in trade-off among different stakeholders' interests. In LUPAS, an optimization model was developed. The model is linked with a GIS for data input and results presentation. With the optimization model, the land use planners can explore different land use scenarios with different objectives and constraints, both biophysically and socio-economically. The results of the model are sets of land use option maps with their resources requirements, e.g. labor or capital requirements, and their outputs, e.g. productions of shrimp, rice or total area of forest. This information is very important for the decision-maker to select the most suitable land use plan for the study area.

This chapter presents the application and comparison of three land-use planning (LUP) approaches ... more This chapter presents the application and comparison of three land-use planning (LUP) approaches in the coastal area of the Mekong Delta (MD), Vietnam. The land use of the studied area is diverse, quickly shifting and strongly contrasting. The contrast is not only in terms of resources but also in economic profitability and environmental sustainability. We wanted to use LUP approaches representing various levels of complexity and computation intensity, from empirical and qualitative to mechanistic and quantitative. From the variety of methods available, we selected a participatory LUP (PLUP) methodology, the guidelines for LUP by FAO enhanced with multi-criteria evaluation (FAO-MCE) and the land-use planning and analysis system (LUPAS) using interactive, multiple-goal linear programming. We used the same planning goal, worked in the same study area and the same period and produced three land-use plans. We compared the credibility, which is the technical and scientific appropriateness of the approach, and the stakeholder acceptability, which is the perception of the stakeholders of its practical value. The LUPAS map was best appreciated by stakeholders, but it also was the most expensive method. When comparing land-use plans of 2003 with actual land use of 2004, the PLUP map, which is disagreed with most strongly by the scientists, agrees best with the actual land use by the farmers. In the dynamic and contrasting land-use systems of the coastal MD, PLUP seems the most suitable approach for short-term advice, but for longer-term planning a combination of methods will probably work best.

Journal on Chain and Network Science, 2006

This paper presents the applications of Geoinformatics System (GIS) in three different land-use p... more This paper presents the applications of Geoinformatics System (GIS) in three different land-use planning (LUP) approaches. The participatory LUP (PLUP) which strongly consider the local people perceptions for land utilizations, the guidelines for LUP by FAO enhanced with multi-criteria evaluation (FAO-MCE), and the land-use planning and analysis system (LUPAS) using interactive multiple-goal linear programming. The case study was two villages in the coastal area of the Mekong Delta (MD), Vietnam. The land use of the studied area is diverse, quickly shifting and strongly contrasting. The contrast is not only in terms of resources but also in economic profitability and environmental sustainability. GIS plays an important role in the successful of these three LUP approaches. In PLUP, GIS help to integrate the acquired spatial and attribute data from farmer discussions and cross-section walks, and to analyses the changes in not only biophysical, land cover changes but also farmers' perception changes in land utilizations. The conflicts in resources uses, mainly between agriculture and aquaculture, were also mapped and described. In FAO-MCE, a GIS was used to combine biophysical and socio-economic characteristics for land evaluation. A multi-criteria evaluation tool was developed to support the decision maker in trade-off among different stakeholders' interests. In LUPAS, an optimization model was developed. The model is linked with a GIS for data input and results presentation. With the optimization model, the land use planners can explore different land use scenarios with different objectives and constraints, both biophysically and socio-economically. The results of the model are sets of land use option maps with their resources requirements, e.g. labor or capital requirements, and their outputs, e.g. productions of shrimp, rice or total area of forest. This information is very important for the decision-maker to select the most suitable land use plan for the study area.

This chapter presents the application and comparison of three land-use planning (LUP) approaches ... more This chapter presents the application and comparison of three land-use planning (LUP) approaches in the coastal area of the Mekong Delta (MD), Vietnam. The land use of the studied area is diverse, quickly shifting and strongly contrasting. The contrast is not only in terms of resources but also in economic profitability and environmental sustainability. We wanted to use LUP approaches representing various levels of complexity and computation intensity, from empirical and qualitative to mechanistic and quantitative. From the variety of methods available, we selected a participatory LUP (PLUP) methodology, the guidelines for LUP by FAO enhanced with multi-criteria evaluation (FAO-MCE) and the land-use planning and analysis system (LUPAS) using interactive, multiple-goal linear programming. We used the same planning goal, worked in the same study area and the same period and produced three land-use plans. We compared the credibility, which is the technical and scientific appropriateness of the approach, and the stakeholder acceptability, which is the perception of the stakeholders of its practical value. The LUPAS map was best appreciated by stakeholders, but it also was the most expensive method. When comparing land-use plans of 2003 with actual land use of 2004, the PLUP map, which is disagreed with most strongly by the scientists, agrees best with the actual land use by the farmers. In the dynamic and contrasting land-use systems of the coastal MD, PLUP seems the most suitable approach for short-term advice, but for longer-term planning a combination of methods will probably work best.