object(stdClass)#4401 (1) { ["family"]=> string(0) "" } Desertification Evaluation Using IMDPA Model (Case Study: Taraz Nahid, Saveh, Iran) | Journal of Rangeland Science

Desertification Evaluation Using IMDPA Model (Case Study: Taraz Nahid, Saveh, Iran)

XML HTML PDF
  • Hamid Toranjzar1,
  • 2,
  • Moslem Poormoridi2,
  1. Department of Natural Resources, Arak Branch, Islamic Azad University, Arak, Iran
  2. Islamic Azad University of Arak,

Published in Issue 2024-01-30

HTML views: 11

PDF views: 119

Abstract

Several studies have been performed to evaluate the desertification in Iran and other countries which led to present national and regional models. One of them is IMDPA model. This model was used as a case study in Taraz Nahid, Saveh, Iran. In this study, five factors including climate, soil, vegetation, irrigation, and socioeconomic ones were evaluated. According to the region conditions for each criterion, several indices were considered. Based on the selected indices for each criterion, the qualitative maps were developed from geometric mean of indices for each criterion and finally, the desertification intensity map was prepared from the geometric mean. The final desertification map shows the balanced (moderate) and intense (severe) classes of desertification process in the region. According to the performed evaluations, the soil texture index with the average value of 3.75 (very severe class) and vegetation conditions with the average value of 2.9 were more effective indices in the region desertification. Also, the desertification quantitative intensity value (DM=2.31) was calculated for the entire study region that showed the moderate class for this region.

Keywords

  • Desertification,
  • Drought Monitoring,
  • Evaluation,
  • IMDPA model,
  • MOD13A3,
  • Normalized Difference Vegetation Index,
  • Semi-arid region.,
  • Taraz Nahid,
  • Tokunaga-Thug method
HTML PDF