Ranking desertification indicators using TOPSIS algorithm
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Desertification is the result of natural and anthropogenic processes, leading to degradation or loss of the land’s productivity and complexity. To assess the desertification status, integrated set of indicators must be identified. Indicators must provide synthetic information on threshold levels, status and evolution of relevant physical, chemical, biological and anthropogenic processes. Multi-criteria decision-making (MCDM) is a collection of methodologies to compare, select, or rank multiple alternatives that involve incommensurate attributes. Technique for order preference by similarity to ideal solution (TOPSIS) method is a multiple criteria method to identify solutions from a finite set. TOPSIS is an algorithm for determining the most preferable choices among the possible indicators that can be developed. The aim of this paper is to introduce TOPSIS as a decision-making method for the selection and integration of desertification indicators. The simulation case study presented here is related to the selection of the best set of indicators to monitor land degradation by remote sensing in three different countries (Brazil, Mozambique and Portugal), within the framework defined by the DesertWatch Extension project.
KeywordsMCDM TOPSIS Desertification Indicator system DesertWatch
The data used were kindly provided by the DesertWatch Extension project, a project funded by the European Space Agency (ESA) and coordinated by Advanced Computer System (ACS Spa). Data have been collected by the implementing Consortium lead by Critical Software SA.
Authors would like to thank Prof. S. Madrau of the Sassari University for his assistance in the preparation of this paper.
- Armas R, Caetano M, Carrão H, Soares A, Pereira MJ, Gutierrez A, Rocha A, Pace G, Zucca C, del Barrio G, Paganini M (2010) Earth observation from space to support the unccd:the Desertwatch Extension project. Paper presented to the Living Planet Symposium, Bergen (Norway), July 1, 2010Google Scholar
- Brans JP, Mareschal B, Vincke Ph (1984) PROMETHEE: A new family of outranking methods in multi criteria analysis. Journal of Operational Research. 84:477–490Google Scholar
- Gentile AR (1998) From national monitoring to European reporting: the EEA framework for policy relevant environmental indicators. In: Enne G, d’Angelo M, Zanolla C (eds), Proceedings of the International Seminar on Indicators for Assessing Desertification in the Mediterranean, Porto Torres (Italy) pp 18–20, September, 16-26, 1998Google Scholar
- Kosmas C, Kirkby M, Geeson N (1999) The MEDALUS project Mediterranean desertification and land use; Manual on key indicators of desertification and mapping environmentally sensitive areas to desertification. European Commission, BrusselsGoogle Scholar
- Opricovic S (1998) Multi criteria Optimization of Civil Engineering Systems. Faculty of Civil Engineering, BelgradeGoogle Scholar
- Saaty TL (1980) The analytic hierarchy process: planning, priority setting, resource allocation. McGraw-Hill, New YorkGoogle Scholar
- Shen Q, Jensen R (2007) Rough Sets. Their Extensions and Applications, International Journal of Automation and Computing 4(3):217–228Google Scholar
- UNCCD (1994) United Nations convention to combat desertification in countries experiencing serious drought and/or desertification, particularly in Africa. A/AC.241/27, ParisGoogle Scholar
- Zeleny M (1982) Multiple Criteria Decision Making. McGraw-Hill, New YorkGoogle Scholar
- Zucca C, Previtali F, Enne G (2004) Ongoing research and concentration activities on desertification in Northern Mediterranean Countries (UNCCD Annex IV). In: Zdruli P, Steduto P, Kapur S, Akca E (eds), Proceedings of the International Seminar “Ecosystem-based assessment of soil degradation to facilitate land users’ and land owners’ prompt actions”, Adana, Turkey, 2–7 June 2003. MEDCOASTLAND publication 1. IAM Bari, Italy. pp 315–327Google Scholar
- Zucca C, Della Peruta R, Salvia R, Cherlet M, Sommer S (2010) Evaluation and integration of baseline indicators for assessing and monitoring desertification. European Communities, EUR Report in press, ISSN 1018-5593, Luxembourg, Office for Official Publications of the European CommunitiesGoogle Scholar