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:: Volume 5, Issue 10 (12-2017) ::
PEC 2017, 5(10): 1-17 Back to browse issues page
Characterization of ecosystem’s climate and geographical distribution of two pasture species using random forest modeling in Central Zagros region
Hamed Sangoony * , Mohamadreza Vahabi2 , Mostafa Tarkesh2 , Hamidreza Eshghizadeh3 , Saied Soltani2
Isfahan University of Technology, Natural resources faculty , h.sangoony@gmail.com
2- Natural resources faculty
3- Agriculture Faculty
Abstract:   (5043 Views)

Climatic conditions largely determine the status and characteristics of plants and plant communities in different regions. Therefore, in order to study range plant species, the tolerance of each species to these factors should be determined. In this study, climatic features and requirements of two important grass species with conservation and forage importance (Agropyron trichophorum Richt. & Bromus tomentellus Boiss.) were studied in the Central Zagros. For this purpose, 19 bioclimatic variables used as inputs to Random Forest (as a machine learning approach) in R statistacial environment. The results showed that total annual precipitation (BIO12), the average temperature of the wettest season (BIO8) and the mean diurnal range (BIO2) for both species had the greatest importance and the sum of these three variables described more than 68 and 64 percent of variance in the B. tomentellus and A. trichophorum, respectively. The estimated accuracy by TSS index was calculated for B. tomentellus as 0.95 and Sensitivity and Specificity values were estimated as 0.93 and 0.96, respectively. For A. trichophorum, these values (TSS, Sensitivity& Specificity) calculated as 0.92, 0.89 and 0.93; respectively. The results of this study explain the cliamtic niche of the studied species. Top priority places, where protective actions has to be taken, can be determined using the results of this study. Potentially climatic suitable habitats can be proposed for reintroduction of these valuable species as well.

Keywords: B. tomentellus, A. trichophorum, Random Forest, Climatic ecosystem, Biomod
Full-Text [PDF 884 kb]   (3328 Downloads)    
Type of Study: Research | Subject: Special
Received: 2016/07/15 | Accepted: 2017/04/19 | Published: 2017/11/30
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Sangoony H, Vahabi M, Tarkesh M, Eshghizadeh H, Soltani S. Characterization of ecosystem’s climate and geographical distribution of two pasture species using random forest modeling in Central Zagros region. PEC 2017; 5 (10) :1-17
URL: http://pec.gonbad.ac.ir/article-1-226-en.html


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Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 5, Issue 10 (12-2017) Back to browse issues page
مجله حفاظت زیست بوم گیاهان Journal of Plant Ecosystem Conservation
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