Volume 11, Issue 2 (9-2017)
مرتع 2017, 11(2): 222-232 |
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Daneshgar M, Erfanzadeh R, Ghelichnia H. Evaluating the functional groups status in soil seed bank and their role in recovering of the degraded vegetation in rangelands (Case study: summer rangelands of Plour, Mazandaran province). مرتع 2017; 11 (2) :222-232
URL: http://rangelandsrm.ir/article-1-482-en.html
URL: http://rangelandsrm.ir/article-1-482-en.html
Tarbiat Modares University
Abstract: (5696 Views)
Soil seed bank is an important part of plant species diversity. The study of soil seed bank provides vital information for rehabilitation of degraded vegetation. This study aimed to evaluate soil seed bank potential for recovering of degraded vegetation in Plour rangelands. Random systematic sampling method was used to collect soil samples in Polur rangelands in the spring. Soil seed bank samples were taken from two depths (0-5 and 5-10 cm) and they were moved to greenhouse to conduct seed germination tests. ANOVA and Duncan's tests were used to compare relative frequency of the plant species palatability classes and also relative frequency of life form in soil seed bank and vegetation, separately. Paired t-test was applied to compare each palatability class between seed bank and vegetation and to compare relative frequency of each life form between seed bank and vegetation. The results showed that relative frequency of palatability class II in soil seed bank and palatability classes III in vegetation were significantly higher than the other palatability classes. Therophytes were the main life form of plant species in the soil seed bank, and Hemichryptophytes were the main life form of plant species in vegetation. We concluded that relative frequency of palatability class I in soil seed bank was low and we could not rely on the soil seed bank for recovering palatable plant species automatically and without cultivating palatable species.
Type of Study: Research |
Subject:
Special
Received: 2017/09/1 | Accepted: 2017/09/1 | Published: 2017/09/1
Received: 2017/09/1 | Accepted: 2017/09/1 | Published: 2017/09/1
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