Indirect validation of the Environmental Sensitive Area Index using soil degradation indicators: A country-scale approach |
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Affiliation: | 1. Key Laboratory of Oasis Ecology, Urumqi 830046, China;2. Institute of Resources and Environment Science, Xinjiang University, Urumqi 830046, China;3. Institute of Arid Ecology and Environment, Xinjiang University, Urumqi 830046, China;4. Spatial Ecology Lab, School of Life Sciences, South China Normal University, Guangzhou 510631, Guangdong, China;5. Center for Environment Risk Assessment and Remediation, University of South Australia, Adelaide, SA 5095, Australia;1. State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;2. Alterra, Wageningen University and Research Centre, PO Box 32, 6700 AA Wageningen, The Netherlands |
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Abstract: | The Environmental Sensitivity Area Index (ESAI) is one of the most used frameworks to monitor land vulnerability to degradation in southern Europe, northern Africa and the Middle East. ESAI outputs were validated on the field at both local and regional scales, but a country or continental scale validation is still missing. Using non-parametric correlations and multivariate statistics, the present study contrasts the spatial distribution of the ESAI over 8100 local municipalities in Italy with 12 soil variables assessing individual soil attributes, soil degradation processes and the overall soil quality. Three supplementary variables assessing elevation, latitude and the urban–rural gradient have been also considered in the analysis. The ESAI correlated with both soil attributes (topsoil organic carbon) and degradation processes (soil contamination risk, landslide risk, grazing pressure and agricultural mechanization, considered a predisposing factor to soil compaction) varying in intensity along the elevation gradient. The approach illustrated provides an indirect evaluation of the reliability of the ESAI as a multi-domain indicator of land vulnerability to degradation in the Mediterranean region. |
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Keywords: | Environmental indicators ESA Desertification Land vulnerability Italy |
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