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Table 1 Main criteria affecting desertification and considered indicators for quality degree of criteria

From: An applied statistical method to identify desertification indicators in northeastern Iran

Criterion Indicators representing quality
climate precipitation, aridity indexa
geology geology, slope index, land use change
soil electrical conductivity (EC), sodium adsorption ratio (SAR), soil depth
vegetation vegetation state, vegetation utilization, vegetation restoration
agriculture cropping pattern, crop yield, use of machinery
erosion wind erosion, water erosion
groundwater EC, SAR, water declination
social-economic poverty status
technology development technology development
  1. aAridity index was calculated by ratio of annual rainfall to potential of evapotranspiration proposed by FAO/UNEP for global desertification map AI=P/ETP (UNEP 1992)