Volume 13, Issue 1 (5-2019)
مرتع 2019, 13(1): 76-89 |
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Motamedi J, Ahmadzadeh N, Alijanpoor A, Shydai karkaj E. Ecological and morphological characteristics of Verbascum speciosum Schrader. in the mountainous rangelands of Sahand. مرتع 2019; 13 (1) :76-89
URL: http://rangelandsrm.ir/article-1-718-en.html
URL: http://rangelandsrm.ir/article-1-718-en.html
Abstract: (4586 Views)
Identification of plant characteristics in response to various ecological condition is essential for understanding vegetation dynamics. Verbascum speciosum is one of the most important medicinal species for infectious diseases. This species is spread in rangelands of Iran and especially in Azerbaijan. This study aimed to evaluate the ecological and morphological characteristics of V. speciosum in four range places in Sahand Mountain. A systematic random method was used to collect vegetation and soil data. Six transects with a length of 100 meters were established in each place and the vegetation data were collected from 60 plots with a size of one square-meter, placed along each transect. Structural and biomass characteristics of ten plant species of one year and two years old were recorded in each range place. Redundancy analysis (RDA) as a linear method was used to investigate the relationships between species characteristics and environmental factors. According to the results, various environmental factors affect biomass and structural characteristics of the species. Results indicated that as altitude increases and consequently temperatures decreases, the structural characteristics of one-year-old of V. speciosum decreased. Increasing soil moisture and decreasing oil lime content lead to an increase in the structural characteristics of one year old of the species. Two-years old species had better structural and biomass performance in places with lower elevation and sandy soil texture compared to the one-year-old of the species. The importance of structural and biomass characteristics varied based on the species application for different purposes. The structural and biomass characteristics of V. speciosum are correlated to each other positively. Measuring these characteristics are required for quantifying functional diversity of rangelands.
Type of Study: Research |
Subject:
Special
Received: 2019/05/9 | Accepted: 2019/05/9 | Published: 2019/05/9
Received: 2019/05/9 | Accepted: 2019/05/9 | Published: 2019/05/9
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