Evaluation of geodiversity indicators in the karst southwest of Lorestan province with emphasis on karst forms

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Document Type : Original Article

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1 education

2 Faculty

Abstract

Geodiversity describes the natural diversity of abiotic elements in a place. The aim of this study is to interpret and evaluate geodiversity with emphasis on karst forms in the southwestern region of Lorestan. This region includes the basins of the cities of Kohdasht, Romeshkan, Poldokhtar, and Mamolan. The karst geodiversity assessment in the study area was carried out using the Benito Calvo model (2009) including geodiversity indices such as plot roughness density (PRD), Simpson roughness index (SIEI), Shannon roughness index (SHEI), Shannon diversity index (SHDI), and Simpson diversity index (SIDI). The results of the five indices of all geokarst in the region showed that the highest value is related to the Mamolan basin. In this basin, the Simpson and Shannon roughness indices for geomorphic types were determined to be 0.977 and 0.751, respectively, and numerical analysis showed that the topographic heterogeneity was very high and the combination of roughness classes was also high and almost uniformly distributed. Also, the Simpson and Shannon diversity rates for geomorphic types were determined to be 0.973 and 4.125, respectively, which indicated that in this interpretation from Simpson's perspective, there is no dominance of a specific type because the diversity is high. Shannon's effective number is consistent with high diversity, but more reasonable. The Pol Dokhtar basin is in second place in this evaluation. The overall results showed that the contribution of geological factors was greater than morphometric and climatic factors.

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Journal of Hydrogeomorphology

Articles in Press, Accepted Manuscript
Available Online from 16 September 2025

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History

  • Receive Date: 02 August 2025
  • Revise Date: 16 September 2025
  • Accept Date: 16 September 2025

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