Introducing Flora, Life Forms and Geographical Distribution of Invasive Weeds under Ardabil Plain

Document Type : Research Paper

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Identification of weed or invasive flora has special role in the adaption of suitable strategies for optimum control of weeds, yield improvement of agricultural production and thus improving economic efficiency. Study of Ardabil plain invasive weeds based on the fieldworks, specimens were collected and transfred to the herbarum and identified. Results showed that from the identified plant species, 182 species grow at the irrigated, rainfed and and edge of those lands as weeds which belong to 31 families and 129 genera. Among them, Poaceae, Asteraceae, Brassicaceae, Fabaceae and Lamiaceae families have the highest frequency. Among the identified weed species 35.68% (65 species) have medicinal values. The life forms of the identified species using Raunkiaer's method were Therophytes (Th) with 64.84% (118 species) and Hemicryptophytes (He) with 28.57% (52 species), which are the dominant lifeforms. From the crotype perspective, the most of the species belong to Irano Turanean and then Euro- Siberian, and Mediteranian regions. According to the IUCN categories and red data book of Iran, species were classified and finally, 6 endemic species and 10 low risk and data deficiency species were identified. By considering these results, struggling and eliminating invader species will not create disruption from the environmental perspectives.

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