An economic-environmental scenario simulation model of BOD pollution in Taiwan

摘要

An aggregated model of a large scale region of the Taiwan Island has been developed for exploring the surface water pollution in Taiwan. The trends of river pollution were simulated associated with various scenarios using a system dynamics software tool Vensim~®, where the biological oxygen demand (BOD) is the index pollutant of concern. The interrelationships between economic and environmental aspects were emphasized. According to the assumptions with respect to some policy variables in each of the scenarios, the generation, treatment, and emission of BOD for each county and each main river basin were simulated. The length ratios of not or slightly and severely polluted river segments were also predicted. Moreover, the treatment costs and the SEEA maintenance costs can be calculated and accordingly the Green GDP's taking into account the BOD pollution in rivers can then be derived.