Showing 5 results for Mehrabi
Dr Ali Ariapour, Dr Hamidreza Mehrabi, Engineer Golnar Kheradmand,
Volume 9, Issue 2 (9-2015)
Abstract
Appropriate management in beekeeping industry requires comprehensive information about nectar and pollen plants and flowers that attract honeybees. This study aimed to identify the range plants appropriateness for apiculture and evaluate the attraction of nectar and pollen producing plants in Sarab Sefid rangeland located in Brojerd- Lorestan. The data collection was performed in flowering stages in spring 2013, and the plants used to attract honeybees were identified by fieldwork. Chronometer method was used to record the time that bees spent in each plant type during a fixed five minutes period. The nectar and pollen plants attraction for bees were evaluated in 9 steps. The attractiveness of plants was categorized in 4 classes (excellent- good- average and low) using a cluster analysis method. In this study 160 plant species belonging to 106 genus and 31 families were identified. According to the results, 29, 28 and 104 plant species were identified as producing" nectar", "pollen" and "nectar and pollen" respectively. Mid May to early August was identified as the best flowering period in the study area. Results showed that 29 plant species (78.22%) were identified with excellent attractiveness to honey bees, 46 species (28.75%) good, 60 species (62.5%) average and 25 species (15.63%) had low attractiveness to honey bees.
Dr Ali Ariapour, Dr Hamidreza Mehrabi, Engineer Ali Dehpahlavan,
Volume 10, Issue 1 (7-2016)
Abstract
Various management practices have been used to enhance rangeland condition and trends. This study was conducted to evaluate the effects of range reclamation plans on forage supply, range condition and trend in Khezel rangelands -Nahavand region in 2014. Forage supply, condition and trend changes of eight management units (samaneh orfi) under range management plans and four management units without such a plan were studied and compared using T-test analysis. Vegetation characteristics in each site were measured in 30 quadrates with one square meters plots along 50 meters transect parallel to the dominant slope. According to the results, all treated rangelands showed considerable positive changes in range condition but the measured characteristics in Goornasib and Sertezen sites did not differ significantly because no treatment applied. Forage supply of sites with range management plans increased significantly compared to control sites (p ˂ 0.05) except Abolfath and Faresban sites. The forage production varied considerably between the sites. The maximum and minimum productions in the sites were observed in Siah-Dare with 560 kg/ha and Dolat-Abad with 240 Kg/ha respectively. Positive trends were observed in all the treated sites. This study indicated that implementing range management plans can enhance forage production, range condition and trend therfore it can conserve rangeland sustainability in the long term.
Hamidreza Saeedi, Hossein Azarnivand, Hossein Arzani, Hamed Rafiee, Hassan Mehrabi,
Volume 10, Issue 4 (3-2017)
Abstract
Nomads use natural supplements to feed their livestock and they avoid consuming hormones and other chemical synthetic compounds, hence their organic production has high potential for commercialization and marketing. This study aimed to assess the social and economical characteristics of nomads affecting their participation to establish local dairy markets in Kerman province. Random sampling was used to collect 366 questionnaires from Soleimani, Mehni, Kochomye, Jabalbarezi and Ayeneye tribes in 2015. The results showed that nomads WTA (Willingness to Pay) are about 22600 Rials per one litter milk in local markets. Logit model indicated that the nomad’s livestock number, age, marital status, education, family size, annual income and expenditure have significant effect on their WTA. This study showed that local markets can be established with active nomad’s participation. Appropriate pricing policy for nomad’s organic products in the local markets will empower nomads and will improve their social status.
Ali Hamidi, Aliakbar Mehrabi, Seyed Akbar Javadi, Aliakbar Imani,
Volume 15, Issue 1 (4-2021)
Abstract
Poor participation and investment of natural resource users in cooperatives requires investigation. Effecting factors therefor, should be found and prioritized. Reference searches showed three major categories of factors: educational (extensional), economic and social factors. The case was taken into nine natural resources development cooperatives as a statistical population throughout the counties of Ardabil province. The research followed a descriptive-survey methodology, and required information was garnered through field works and filling up a researcher-made questionnaire. Validity and reliability coefficients of the questions were confirmed by experts and Cronbach's alpha of 0.86, respectively. Data were analyzed through proper statistical techniques. Comparing mean scores of subject-pertinent sections revealed that extension and economic factors were known as the most influential in Ardabil, Namin, Nir and Parsabad. Social issues however, were more important in the eyes of Ardabil, Nir, Khalkhal and Bilehsavar land users. Generally, variance between statistical populations of cities and research-affecting factors exhibited significant differences with a confidence level of 99%. Duncan test resykts showed that the highest value is given to social and participatory matters. For Bilehsavar and Nir cases however no significant differences was seen. According to the research results, it is proposed to work on social problems such as reforming behavior with the clientele, utilizing indigenous culture, reforming the negative mentality towards the cooperatives, raising awareness of the benefits of participation and investment, building trust among the people, etc., in the cooperatives, rather than education and extensional programs; this can attract the majority of beneficiaries to cooperatives and make them invest. The next steps in line with the priority of the provincial cities should address extensional and economic subdivisions, respectively, such as applied training, amending cooperatives’ charter, transferring executive projects to cooperatives, monetizing existing rural jobs.
Maryam Asgarian, Ali Ariapour, Hamidreza Mehrabi,
Volume 18, Issue 4 (1-2025)
Abstract
Background and objectives: This study aimed to identify and prioritize areas suitable for perennial alfalfa cultivation in low-yield dryland areas of the Hirab basin, Borujerd County, using Geographic Information System (GIS) and the Analytic Hierarchy Process (AHP). Alfalfa, often referred to as the "queen of forage plants," is of particular importance in agriculture. Dryland areas, which are subject to wind and water erosion due to poor management, present an opportunity for alfalfa cultivation due to the plant's adaptability to water scarcity conditions.
Methodology: Initially, information, layers, and maps of the region were collected. Natural factors affecting alfalfa cultivation were extracted from scientific sources, and a questionnaire was prepared to determine the coefficients of importance of these factors. These coefficients were entered into the Expert Choice software for weighting criteria and sub-criteria. After obtaining the normalized weights, the information was entered into ArcGIS software, and the layers were weighted and combined accordingly.
Results: The region was classified into four classes in terms of alfalfa cultivation potential: highly susceptible, susceptible, semi-susceptible, and non-susceptible. The results indicated that over 70% of the region has high to medium potential for alfalfa cultivation. This suggests that most parts of the Hirab region are suitable for alfalfa cultivation based on the studied climatic and topographical variables. More than half of the areas in the region possess favorable conditions for alfalfa cultivation, highlighting the high potential of the Hirab region for cultivating this crop as part of crop rotation and pasture restoration.
Conclusion: By examining the weight values obtained for the factors affecting alfalfa cultivation, it was determined that soil factors (soil texture, soil depth, salinity, and acidity) have the greatest impact on alfalfa cultivation with a weight value of 0.637. Following soil, the topographic criterion (including slope, direction, and altitude) has a weight value of 0.258, and the climate criterion (including temperature and precipitation) has a weight value of 0.105. Soil texture and soil salinity of the region have the least impact with weight values of 0.170 and 0.073, respectively. Areas with altitudes above 2500 meters have the least potential for alfalfa cultivation with a weight value of 0.048. Among the directional options, the south and southeast directions have the greatest impact on alfalfa cultivation with a weight value of 0.546, while the west and north directions have the least potential with a weight value of 0.084.
