Author:

Ngyyen Kim Loi
Watershed and Environmental Management,
Nong Lam University (NLU), Ho Chi Minh City, VIETNA

Abstract:

Decision makers today need to be able to rapidly find good solutions to increasingly complex problems. Optimization based on decision support system (DSS) can help decision makers to meet this challenge. Building such systems, however, is expensive and time consuming.The use of decision support system (DSS), linear programming (LP), and geographic information system (GIS) for sustainable watershed management in Dong Nai watershed is presented. A general statement of system requirement for DSS has been conceptualized to provide a set of core requirement and behavior for DSS for mutil-criteria decision
making in sustainable watershed management. Classes of decision elements for the analysis of decision problems and of other DSS components are identified. This paper investigated also how demographic (socioeconomic) and land-use (physical and environmental) data can be integrated within a multi-scaled decision
support system framework to formulate and evaluate land-use planning scenarios. A case study approach is undertaken using ‘what-if’ planning scenarios for a Dong Nai Watershed, Vietnam. This paper has not only briefly outlined the three future land use scenarios comprised within the framework but also has generally methodology in developing decision support system (DSS) for sustainable land use allocation. Scenario A - ‘Future trend scenario’ is based on existing socio-economic trends. Scenario B – ‘Maximization land allocation scenario’ will be derived using maximizing modelling of land valuation data. Scenario C –
‘Sustainable Development’ will be derived using a number of environmental layers and assigning weightings of importance to each layer using a multiple criteria analysis (MCA) approach. The ‘what-if’ planning scenarios was expected through the use of maps and tables within a geographical information system (GIS), which delineate future possible land-use location - allocations. Each of the scenarios and their underlying model will be applied to the Dong Nai watershed, Vietnam.

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