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Study presentation feasibility of statistical models for estimating rangland plants species of Artemisia aucheri and Agropyron trichophorum (Case Study: Dizaj Batchi and Ghotor Ranglands of Khoy) | ||
| تحقیقات مرتع و بیابان ایران | ||
| Article 3, Volume 22, Issue 4, March 2015, Pages 625-638 PDF (340.8 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.22092/ijrdr.2016.106035 | ||
| Authors | ||
| Fateme Aliloo; Farshad Keyvan behjou* ; javad moetamedi | ||
| Abstract | ||
| The current study was aimed to investigate the relationship between the production of Artemisia aucheri and Agropyron trichophorum and their morphological features and providing regression models. For this purpose, three rangeland sites were selected in Dizaj Batchi and Ghotor Ranglands of Khoy. Stratified random sampling was used within one square meter plots at 10-m intervals and along 100-m transects. Various regression models including one-dimensional, two-dimensional, and multiple regression models were applied. Among the significant models, the best model was selected at the species level based on model evaluation criteria. The results showed that each of the features investigated had a significant relationship with production. One-dimensional models demonstrated better results and crown diameter (D1) in both species, and all three range sites was chosen as the most efficient morphological feature in order to estimate production. According to the obtained results, suitable models were recommended for the study rangelands and study species. | ||
| Keywords | ||
| Estimation of plant production; Morphological characteristics; Statistical models; Dizaj Batchi and Ghotor Ranges | ||
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