Volume 13, Issue 3 (10-2019)
مرتع 2019, 13(3): 476-489 |
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Heydari Ghahfarokhi Z, Tahmasbi P, Shahrokhi A. Effects of ecological factors on distribution of Salvia hydrangea DC. ex Benth. in Tang-e-sayad, Shahrekord. مرتع 2019; 13 (3) :476-489
URL: http://rangelandsrm.ir/article-1-786-en.html
URL: http://rangelandsrm.ir/article-1-786-en.html
Department of Range Mamnagement, Faculty of Natural Resources and Earth Science, University of Shahrekord, Shahrekord
Abstract: (4207 Views)
Determination of the environment factors affecting the ecological distribution of Salvia hydrangea DC. ex Benth is important especially in protected region of Tang-e-sayad, Chaharmahal & Bakhtiari Province, Iran. The plant is a medicinal and aromatic plant that could be found on natural high lands of the province. Random- systematic method was used for sampling in the areas with and without the species. At each sampling point, elevation, aspect and slope plus canopy cover were recorded. In each plant populations, 2-3 soil sampling were taken from two depths of 0-15 and 15-30 cm. in the Lab., soil physiochemical characteristics were measured. Independent sample t test, Principal Component Analysis (PCA) and Discriminate Analysis (DA) were used to analyze the data. Results of PCA analysis showed that slope; calcium carbonate equivalent (CCE); phosphorous; apparent mass; gravel of first and second depth; electrical conductivity and potassium of the first depth were the most influential variables on presence/absence of the species. The effect of phosphorous and calcium carbonate equivalent, apparent mass, pH, organic carbon and potassium of second depth was outstanding factors for the presence of the species. For the first depth however, the organic carbon, potassium and gravel and heat load index were the most important factors using discriminate analysis. Results also indicated that S.hydrangea prefers to grow on high slopes habitats (about 40%), soils without salinity and alkalinity, light texture and phosphorous about 11 and 6 ppm in the first and second depth of soil respectively. The results of this research could be used as a guideline for cultivate and well management of the species in rangelands with similar ecological conditions.
Keywords: Salvia hydrangea DC. ex Benth, Plant ecology, Habitats factors, Principal Component Analysis, Tang-e-sayad region
Type of Study: Research |
Subject:
Special
Received: 2019/10/21 | Accepted: 2019/10/21 | Published: 2019/10/21
Received: 2019/10/21 | Accepted: 2019/10/21 | Published: 2019/10/21
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