Quantifying trends in system sustainability
نویسندگان
چکیده
This paper focuses on the measurement of the relative sustainability of renewable water resource systems. Being able to quantify sustainability makes it possible to compare alternative plans and policies, and to include sustainability as one of the multiple objectives to be considered when making decisions regarding the design and operation of these systems. Commonly used measures of reliability, resilience and vulnerability, based on subjective judgements concerning what is acceptable or unacceptable with respect to multiple system performance indicators, are combined into an index and used as a measure of changes in relative system sustainability over time. Quantification des tendances de la durabilité des systèmes Résumé Le sujet de cet article est la définition et la quantification du potentiel de développement durable des ressources en eau renouvelables. Cette quantification permet la comparaison de différentes politiques et options de planification. La capacité d'un système à se développer durablement est un des multiples critères qui doivent être pris en compte lors des prises de décision concernant la planification et le fonctionnement d'un tel système. Un index combinant la fiabilité, la resilience et la vulnérabilité du sytème, estimées selon des critères subjectifs prenant en compte ce qui est ou n'est pas acceptable en fonction de multiples indicateurs de performance du système, peut être utilisé pour apprécier les variations du potentiel de durabilité d'un système au cours du temps.
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