Volume 16, Issue 2 (8-2022)                   مرتع 2022, 16(2): 299-311 | Back to browse issues page

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Dashti M, Motamedi J, Faravani M, Poorabas M H, Mozafari M. Economic and ecological evaluation of the use of medicinal plants (Case study: Khorklat rangelands, Khorasan Razavi Province). مرتع. 2022; 16 (2) :299-311
URL: http://rangelandsrm.ir/article-1-1023-en.html
Rangeland Research Division, Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO), Tehran
Abstract:   (334 Views)
Background and objectives: Rangelands plants are often are used for their medicinal contents (MPS). Calculating the ecological and economic capability of the lands determines the worthy and suitability level of the places for the exploitation of MPS. The current research was conducted with the same purpose in the rangelands of Khorklat located in the heights of Hazarmasjed.
Methodology: In the growing season of 1397-1399 the study conducted by establishing 120 plots of one square meter, along 12 transects of 100 meters. In each rangelands plant representative, 30 plots of one square meter were used, with a distance of 10 meters from each other, along three transects of 100 meters. In each of the plots; after measuring the structural items of vegetation such as; canopy cover, density and abundance of plant species were measured.  Quantity of the forage production
 of species grazed by livestock and the production of organs used by each of the MPS located inside the plots were also calculated. These applied on the species Achillea millefolium, Allium homolacarpum, Alyssum homolocarpum, Althea officinalis, Bonium persicum, Erenjium bungei, Eremurus olgae, Gundelia tournefortii, Hyoscyamus niger , Hymenocrater incanus, Lallemantia royleana, Scrophularia striata, Stachys lavandufolia, Teucrium polium and Verbascum songaricum.  Results were counted as performance index of the species which was obtained by cutting and weighing or harvesting underground organs. The average values of the index in each of the representative groups during different years were considered to calculate the economic index. Economic index resulted from the expected value of each hectare of rangelands in the region and the marketing margin of each MPS.
Results: Based on the results, all the MPS in the plant composition are not exploited in a conventional way. Only the exploitation of the 15 mentioned species which are less grazed due to their secondary compounds and are considered class III species in terms of palatability, is common. The average canopy cover of the mentioned MPS is 14% of the total crown cover of the rangelands of the region. In other words, the share of MPS mentioned in the plant composition is about 36%. The common composition of MPS and grazed species is 48%. The amount of production of MPS was estimated to be 180 kg/ ha during one growing season. By taking into account the permitted exploitation, 40%, for the studied habitats, the harvestable amount of MPS was calculated to be 72 kg/ha/y. According to the results, the rent value of MPS in one harvest period was 3.5 million Rials per hectare. The coefficient of marketing margin of exploitation of MPS of rangelands in the region was also estimated from 10 to 53 percent.
Conclusion: Utilization of MPS based on ecological principles can play an important role in supplementing livelihoods, increasing welfare and empowering pastoralists, maintaining rangeland ecosystems and promoting ecosystem services related to them. This issue should be considered in the policy of attention to MPS and in multi-purpose rangeland plans.

 
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Type of Study: Research | Subject: Special
Received: 2021/07/8 | Accepted: 2022/01/17 | Published: 2022/08/1

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