Iranian Journal of Medicinal and Aromatic Plants Research

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Study on exploitability of medicinal plants in semi-steppe habitat using ecological and economic indices

Document Type : Research Paper

Authors

1 Rangeland Research Division, Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran

2 Faculty of Natural Resources, College of Agriculture and Natural Resource, University of Tehran, Karaj, Iran

3 Botany Research Division, Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran

4 Medicinal Plants Research Division, Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran

Abstract

The knowledge of rangelands suitability is a requirement for the exploitation of medicinal plants of those rangelands. Accordingly, the present study was conducted to evaluate the exploitability of MPs in 12 representative habitats of semi-steppe regions based on the ecological and economic (E&E) indices. For this purpose, after measuring the vegetation and estimating the production of MPs, the E&E indices related to the exploitation of MPs in each habitat were calculated. Finally, based on the indices, the suitability class of each habitat was determined according to the FAO guidelines by the limiting factor method. The results showed that the forage available of habitats varied from 90 to 591 kg.ha-1. Also, the share of MPs production in habitats was obtained between 5 and 58%. In other words, the production of MPs in the habitats varied from 27 to more than 383 kg.ha-1. Accordingly, the expected value of each hectare of habitats from the exploitation of MPs, taking into account the discount rate of 5.4% in September 2020, varied from 3 to 41 $.ha-1. Overall, the suitability of the habitats varied between good to unsuitable (25% good, 17% moderate, 25% low, and 33% unsuitable) in terms of production and exploitation of MPs, but all the habitats had good suitability in terms of forage production for grazing. Therefore, the exploitation of all the habitats cannot play an important and equal role in improving the livelihood of pastoralists and with the approach of preserving the plant genetic resources, the exploitation of MPs in all the rangeland habitats could not be recommended. In addition, the permitted exploitation limit in each habitat varies according to the conditions and trend of the rangeland and the sensitivity of the soil to erosion. This issue should be considered in the policy of paying attention to MPs, and it should be emphasized in the multi-purpose rangeland management plans.

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References
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Iranian Journal of Medicinal and Aromatic Plants Research
Volume 38, Issue 3 - Serial Number 113
September 2022
Pages 373-389
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