Some ecological requirements of Onobrychis melanotricha in Esfahan province | ||
| تحقیقات مرتع و بیابان ایران | ||
| Article 8, Volume 29, Issue 2, July 2022, Pages 111-125 PDF (861.27 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.22092/ijrdr.2022.127215 | ||
| Authors | ||
| Masoud Borhani* 1; Zahra Jabrolansar2; Hamidreza Mirdavoodi3 | ||
| 1Assistant Proffessor, Research Division of Natural Resources, Isfahan Agricultural and Natural Resources Research and Education Center, Agricultural Research Education and Extension Organization (AREEO), Isfahan, Iran | ||
| 2Research Expert, Research Division of Natural Resources, Isfahan Agricultural and Natural Resources Research and Education Cen-ter, Agricultural Research Education and Extension Organization (AREEO), Isfahan, Iran | ||
| 3Associate Proffessor, Research Division of Natural Resources, Markazi Agricultural and Natural Resources Research and Education Center, Agricultural Research Education and Extension Organization (AREEO), Arak, Iran | ||
| Abstract | ||
| Understanding the ecological characteristics of plant species and how they react to environmental factors provides the necessary information for vegetation management and rangeland improvement. In the present study, the ecological needs of sainfoin (Onobrychis melanotricha Boiss.) were studied with emphasis on environmental factors affecting vegetation changes, and the response of this species to changes in ecological factors was investigated using the Canonical Correspondence Analysis (CCA). Data collection was performed in 2018 in 19 study sites in the west and south of Isfahan province. In each site, the vegetation sampling was performed by random-systematic sampling method in 30 plots of one square meter, located along 3 200-meter transects, and soil sampling was done from a depth of 0-30 cm in each site. Data were analyzed using SPSS17 and CANOC4.5 software. Using a generalized additive model with Poisson error distribution for each of the environmental variables showed that environmental factors including height, clay percentage, rainfall, organic matter percentage, phosphorus, and sand percentage, and the average annual temperature significantly affect (p<0.01) vegetation. This species is distributed on semi-deep to deep soils with medium to semi-heavy textures. This species is distributed on semi-deep to deep soils with medium to semi-heavy textures. The optimal altitude range for the growth of this plant was 1600-3200 meters above sea level, and the optimal rainfall for this plant was 370 mm. Overall, the results of this study had an acceptable efficiency in determining the ecological needs of the species, which can be considered by natural resource managers in vegetation management and rangeland improvement operations in similar areas. | ||
| Keywords | ||
| Onobrychis melanotricha; ordination; ecological factors; response curve | ||
| References | ||
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