Investigation of environmental effective factors to distribution of Salvia officinalis (case study: Ghohroud watershed in Kashan, Iran)

DCIM100MEDIA

Salvia officinalis

  • Mojtaba Akhavan Armaki
  1. Young Researchers and Elite club, Karaj Branch, Islamic Azad University, Karaj, Iran

Abstract

This research aims to study the existing relationships between the phytosociology characteristics of Salvia officinalis and environmental factors in order to find the most important factors governing the development of the species in middle Ghohroud rangelands, Iran. Subsequent to indicating the study region, the required flora and environmental data were collected by field survey. Plot size and sample size were determined by minimum area and vegetation procedure methods, using 40 plots along four 100 m transects. The characteristics including floristic list, percentage of canopy cover, number of plants as well as height, the largest and smallest diameter, and freshness of S. officinalis were recorded.

Salvia officinalis

Likewise, bare soil percentage, litter percentage, and stone and gravel percentage of topsoil were recorded in each plot. Moreover, in order to study the soil features, eight soil profiles were taken at each site up to 30 cm depth at the beginning and end of each transect. Classification of vegetation cover was performed by TWINSPAN analysis while factors influencing the change in vegetation characteristics of S. officinalis were determined by PCA analysis. Results demonstrated that factors involving slope, altitude, organic matter, lime content, nitrogen content and soil texture show the highest impact on vegetation characteristics. Overall, variables including elevation ranging between 2300-2500 m, slope in the range of 20% – 40%, and fertile sandy loam textured soils in the presence of nitrogen and high organic matter content as well as low lime content provide the most suitable condition to develop a high production T. kotschyanus.

2be1546a371e3ec2087cd71dce3f4de4  JBES0 9DEC2015

Journal Name: Journal of Biodiversity and Environmental Sciences (JBES)

Publication Name: International Network For Natural Sciences (INNSPUB)

 DOWNLOAD PDF

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s