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    • List of Articles مجید اسحق نیموری

      • Open Access Article

        1 - Comparison of corticolous lichen species with the aim of bioindicators in harvested and control stands in natural beech forests in Nowshahr region
        Maryam Hoseyninezhad Asadollah Mataji Majid Es-hagh Nimvari
        Due to the lack of studies on the effect of forest harvesting on lichen species in Hyrcanian forests, this research aimedto compare the indicator species in harvested and control stands of beech forests. This study was carried out in threeparcels 209, 234 and 241 of Shu More
        Due to the lack of studies on the effect of forest harvesting on lichen species in Hyrcanian forests, this research aimedto compare the indicator species in harvested and control stands of beech forests. This study was carried out in threeparcels 209, 234 and 241 of Shurab section 2 of Golband forestry plan in Nowshahr region (Mazandaran province).Sampling was made from all trees using 40 × 60 cm frames to record lichens type and frequency. The results of this studyshowed that 8 species of lichen belonging to 7 genera and 5 families were recorded in harvested beech forests while incontrol forests, 15 lichen species belong to 13 genera and 10 families were recorded. According to the findings of thisstudy, five species of lichen included Graphis scripta, Pertusaria albescens, Opegrapha vulgata, Lepraria lobificans andParmotrema perlatum in control stands and Lecanora thysanophora, Flavoparmelia caperata and Ramalina thrausta inharvested stands have been introduced as indicator species of beech forests. So, the assessment of human interference inbeech forests can be ascertained by examining these species and their presence or absence. In conclusion, it can be stated that the index species differed in both forests, indicating that forest utilization has caused changes in them Manuscript profile
      • Open Access Article

        2 - Elevational shift of Carpinus betulus L. under the future climate change in northern Iran
        Mahdieh Khalatbari Limaki Majid Es-hagh-Nimvari seyed jalil Alavi Asadollah Mataji farid Kazemnezhadad
        Although there are concerns about the impact of climate change on forests, the impact of future climate change on tree species in the Hyrcanian forests has been less studied. The effect of climate change on the distribution of species usually leads to the movement of sp More
        Although there are concerns about the impact of climate change on forests, the impact of future climate change on tree species in the Hyrcanian forests has been less studied. The effect of climate change on the distribution of species usually leads to the movement of species to higher altitudes and latitudes. Hornbeam is the most abundant tree species in the Hyrcanian forests, which is distributed in a large part of northern Iran. In this study, the effect of climate change on the change of hornbeam species height using species distribution models are currently being studied under different climate change scenarios for 2050 and 2070. In this study, various statistics including TSS, AUC, KAPPA, Sensitivity and Specificity were used to evaluate the performance of species distribution models. According to the model evaluation criteria, the random forest model had a higher efficiency than other models in the distribution of hornbeam in northern Iran. The future prediction of species distribution models showed that climate change will have a negative impact on the distribution of hornbeam, which will significantly reduce the areas with the potential for the presence of this species under RCP2.6 and RCP8.5 in 2050 and 2070. The results showed that the hornbeam species currently has the greatest potential for presence up to an altitude of 1000m, but also expands to an altitude of 2500m and with climate change will have the greatest potential for presence at an altitude of more than 1000m. Although very complex mechanisms justify the distribution of tree species in mountainous areas, climate is one of the most important of these mechanisms and the results of this study can be a criterion for future planning in Hyrcanian forests. Manuscript profile
      • Open Access Article

        3 - Study of ecological diversity of some tree microhabitats in managed and unmanaged parcels of deciduous forests) Case study: Mazandaran-ghaemshahr Chaybagh serie parcels 25 and 26)
        Majid Isaac Nymvri Komeil Gholinezhad
        Protection of biodiversity is considered one of the global concerns and it needs to manage forest as a complex ecosystem and its vital role in conserving biodiversity have been widely acknowledged. The microhabitats of tree habitats were accurately determined based on t More
        Protection of biodiversity is considered one of the global concerns and it needs to manage forest as a complex ecosystem and its vital role in conserving biodiversity have been widely acknowledged. The microhabitats of tree habitats were accurately determined based on the scale lines in a selective manner and the method selected by Lario et al. The measurement parameters including slope, height, moisture content, temperature, light, and soil texture were measured and consequently the environmental factors affecting micro-habitats were investigated using Pc-ordwin software version 4.5 and multivariate analysis (CCA) test. The results showed that in the control parcel, temperature was directly related to light, slope, height, and soil texture, and the average of light, height, soil and positive correlation in this parcel is more than managed parcel, while in the managed parcel it is opposite. The tree microhabitats in the managed and unmanaged parcels have been created under different environmental conditions. According to the results of the CCA and depending on the type of management measures, the forest can be directed towards the type of management by increasing or decreasing the mentioned environmental factors. Manuscript profile
      • Open Access Article

        4 - Effects of forest roads on Vegetation Biodiversity and physical and chemical characteristics of soil in the Kalardasht forest
        Afshin Arjmand Hadi Kiadaliri Farid Kazemnezhad Majid Es-hagh Nimvari
        Road ecology studies are very important and valuable for monitoring the impact of forest roads on biodiversity. This study was conducted in order to investigate the effect of forest roads on the biodiversity of herbaceous species, tree regeneration and lichen in the Kal More
        Road ecology studies are very important and valuable for monitoring the impact of forest roads on biodiversity. This study was conducted in order to investigate the effect of forest roads on the biodiversity of herbaceous species, tree regeneration and lichen in the Kalardasht forests. Sampling was done in the sample plots at distances of 0, 15, 45, 75, and 105 meters from the roadside in two controlled and harvested areas. The indices used were Margalf's species richness, Shannon-Wiener's biodiversity and Pielou's evenness index. The effects of roads on vegetation diversity in relation to soil characteristics were also investigated. The results showed that road construction in the harvested stand caused the destruction of tree regeneration, herbaceous and lichen, but the physical and chemical properties of the soil were not affected. By increasing the distance from the road, the diversity and richness of regeneration in both control and harvested areas has increased and the evenness index has decreased. On the other hand, the diversity and richness of herbaceous species has shown a significant decrease. This study reports the distance of 15 to 45 meters of the buffering effect of the roadside on the indices of biodiversity and the richness of tree regeneration, herbaceous cover and lichens. Most of the physical and chemical properties of the soil have also increased with increasing distance from the road. Also, there was a significant correlation between most of the physical and chemical properties of the soil with the regeneration of trees and herbaceous species. Manuscript profile