Volume 14, Issue 2 (12-2025)
2025, 14(2): 91-102 |
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Akhavan Armaki M, Hashemi M. Ecological Analysis and Habitat Suitability Modeling of the Medicinal Plant Thymus kotschyanus in the Taleghan Watershed Using the Maximum Entropy (Maxent) Model. Iranian Journal of Applied Ecology 2025; 14 (2) :91-102
URL: http://ijae.iut.ac.ir/article-1-1259-en.html
URL: http://ijae.iut.ac.ir/article-1-1259-en.html
of Range Management, University of Agricultural Sciences and Natural Resources, Tehran, Iran.
Abstract: (31 Views)
The aim of this study was to conduct an ecological analysis and habitat suitability modeling of the medicinal plant Thymus kotschyanus in the Taleghan watershed using the Maxent model. A total of 48 occurrence points were spatially thinned to reduce sampling bias. Environmental variables, including topography (elevation, slope, aspect), soil properties, climate, and geology, were prepared and resampled to a common resolution of 30 × 30 m. Climatic data were based on 30-year averages, with interpolation accuracy evaluated using RMSE and R². The model was run using LQH feature classes, a regularization multiplier of 1, with 10 replicates and cross-validation. It performed well (AUC = 0.844, Kappa = 0.87). The optimal threshold was 0.43, with sensitivity of 0.81 and specificity of 0.78. Aspect, elevation, clay content, and soil organic matter were the most influential variables. Results highlight the significant roles of topographic and soil factors in shaping the habitat suitability for T. kotschyanus.
Keywords: Maxent, Species distribution modeling, Thymus kotschyanus, Maximum entropy, Habitat suitabi.
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