The Use of Reference Values in Indicator-Based Methods for the Environmental Assessment of Agricultural Systems
Many indicator-based methods for the environmental assessment of farming systems have been developed. It is not the absolute values of the indicators that reveal whether the impact of a system is acceptable, but rather the distance between these values and some reference values. We reviewed eight frameworks for the environmental assessment of agricultural systems that define reference values for their indicators. We analyzed the methods used to establish reference values and explored how to improve these methods to increase their usage and relevance. This analysis revealed a striking diversity of terminology, sources, and modes of expression of results. Normative reference values allow the assessment of a single system with a previously defined value; Relative reference values are based on indicator values for similar systems or a reference system. Normative reference values can be Science-based or Policy-based . A science-based normative reference value can be a Target value , which identifies desirable conditions, or an Environmental limit , which is the level beyond which conditions are unacceptable. The quantification of the uncertainty of reference values is a topic which is barely explored and warrants further research. Reference values present a means of introducing site specificity into methods for environmental assessment which seems, at present, largely under-exploited.
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- Muradian, Roldan, 2001. "Ecological thresholds: a survey," Ecological Economics, Elsevier, vol. 38(1), pages 7-24, July.
- Ekins, Paul & Simon, Sandrine, 2001. "Estimating sustainability gaps: methods and preliminary applications for the UK and the Netherlands," Ecological Economics, Elsevier, vol. 37(1), pages 5-22, April.
- Lenzen, Manfred & Murray, Shauna A., 2001. "A modified ecological footprint method and its application to Australia," Ecological Economics, Elsevier, vol. 37(2), pages 229-255, May.
- Nijkamp, Peter & Vreeker, Ron, 2000. "Sustainability assessment of development scenarios: methodology and application to Thailand," Ecological Economics, Elsevier, vol. 33(1), pages 7-27, April.
- Moran, Daniel D. & Wackernagel, Mathis & Kitzes, Justin A. & Goldfinger, Steven H. & Boutaud, Aurelien, 2008. "Measuring sustainable development -- Nation by nation," Ecological Economics, Elsevier, vol. 64(3), pages 470-474, January.
- van den Bergh, Jeroen C. J. M. & Verbruggen, Harmen, 1999. "Spatial sustainability, trade and indicators: an evaluation of the 'ecological footprint'," Ecological Economics, Elsevier, vol. 29(1), pages 61-72, April.
- Hrabrin Bachev, 2005. "Framework For Assessing Sustainability Of Farms," Microeconomics 0511003, EconWPA.
- Walter, Christof & Stützel, Hartmut, 2009. "A new method for assessing the sustainability of land-use systems (II): Evaluating impact indicators," Ecological Economics, Elsevier, vol. 68(5), pages 1288-1300, March.
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