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Open Access Article
1 - Study of exclosure effect on vegetation characteristics of Rozband rangelands in Qom province
Seyed Mehdi Adnani Alireza Eftekhari Parviz Gholami Hossin Tavakoli Neko Abbas PormeydaniThe study of changes in rangeland vegetation at regular intervals and awareness of rangeland conditions is one of the important issues for planning and proper management of rangeland utilization. The present study was designed to study changes in the vegetation features MoreThe study of changes in rangeland vegetation at regular intervals and awareness of rangeland conditions is one of the important issues for planning and proper management of rangeland utilization. The present study was designed to study changes in the vegetation features in the grazed and exclosured rangelands in the Razband of Qom province. The vegetation measurement was performed in the form of a pair of transects with a distance of 10 meters from each other. Each pair of transects contained 20 plots. The plots with dimensions of 1 × 1 m were spaced 3 m apart and 10 were placed on each transect. Finally, 240 plots (120 plots inside and 120 plots outside of the enclosure) were evaluated. The data analysis was done by SPSS software and the diversity and species richness were performed using PAST software. Out of a total of 8 plant families, six families were significantly different inside and outside of the exclosure. The exclosure in the study area was significantly increased canopy covered by shrubs and forbs, while the grasses showed no significant difference. Chamephytes, hemicryptophytes, terophytes and class I and III species showed a positive and significant response to exclosure. The T-test for species richness and diversity indices showed that Simpson and Shannon - Wiener diversity indices and Margalef richness index had significant differences. The Menhinick's richness index and evenness index were not significantly different inside and outside of the exclosure. Besides, the RDA analysis to evaluate the impact of exclosure on all of the plant species in plots showed that exclosure had a significant effect on the vegetation (P=0.001, F=29.66). The results of this research showed that a short-term exclosure can cause reconstruction and vitality renewal of plant species such as Bufonia macrocarpa and Artemisia sieberi in the arid rangelands of Qom. Manuscript profile -
Open Access Article
2 - Effects of Rangeland Exclosure on Chemical and Organic Properties of Soil (Case study: Gonbad Area)
Abbas Ghobadi Davoud AkhzariBackground and Objective: Grazing as one of ecological disturbances causes changes in soil characteristics of rangelands. This study was carried out to study the effect of Grazed pasture on plant cover, microbial deposits and some soil characteristics of Gonbad in Hamed MoreBackground and Objective: Grazing as one of ecological disturbances causes changes in soil characteristics of rangelands. This study was carried out to study the effect of Grazed pasture on plant cover, microbial deposits and some soil characteristics of Gonbad in Hamedan. Method: Five transects of 1000 meters were considered separately for soil characteristics in each region (grazed and ungrazed). Systematic sampling of soil was performed every 100 meters in May 2016. The elements of Cu, Fe, K, Mg, Mn and Zn were measured by atomic absorption spectrometer, acidity with pH meter, bulk density from clavicle method, total nitrogen from Kjeldahl method, organic carbon and soil organic matter by the oxidation method of Walkybak and Zeitous Carbon microbial was calculated by quenching-extraction method. Findings: After analyzing, it was determined that the concentrations of K and Zn in the soil of the sample area and the concentration of Mg in the soil of the control area increased significantly at 5% level. Soil acidity in the control area increased from 7/1 in the sample area to 7/23. Soil moisture content decreased significantly in the control area and from 27.11% in the sample area reached 18.12%. Soil bulk density in the control area was 1.16 g / cm3, which decreased significantly in the sample area and reached 0.98 g / g / cm3. The carbon microbial biomass was significantly differed in the soil of grazed and control areas. The comparison of the mean microbial carbon content in studied rangelands showed that this parameter ranged from 0.83 g / kg in the control area (grazed) to 0.95 g / kg and increased significantly. Discussion and Conclusions: The exclosure area has been enclosed with exclosure, soil characteristics in the path of sequencing and achieving ideal conditions, but it still needs attention and continued conservation. Manuscript profile -
Open Access Article
3 - Ecological investigation of changes in rangeland condition and its relationship to poisonous plants
Kourosh Khalatbari Mohammad hasan Jouri Hamid reza MehrabiSevere variations of exploitation structure in rangeland are caused to shakeup of plants vegetation in which invasion of poisonous plants in bare areas is a symbol of this deviation. Inkling of the rangeland condition’s values is brought about accurate decision to MoreSevere variations of exploitation structure in rangeland are caused to shakeup of plants vegetation in which invasion of poisonous plants in bare areas is a symbol of this deviation. Inkling of the rangeland condition’s values is brought about accurate decision to exploitation management in the rangeland. In order to investigating of this diversity processes, rangelands of Javaherdeh (Ramsar) under three treatments, include long term exclosure (30 years), short term exclosure (7 years), and grazing area, were selected. Collecting of species was done by patrolling in the sites and recognition of plants was also done by reliable references. Some plots are laid fortuitously down in order to determine the rangeland trend and condition which are settled by Trend Balance and six-factor methods. With a view to determine the utilision rate of poisonous plants by animal, Bit-count method was employed. Results showed that there are 133 species from 19 families and 56 genera in the study area. There are also 39 toxic plants in good (long-term exclosure), fair (7 years exclosure), and poor conditions (grazing area). 46 species are used by animal that 15 species of them were venomous plants. The study of rangeland condition trends, therefore, is shown that because of overgrazing or long term grazing, invader species, include unpalatable and toxic plants, occupy the land where palatable-endemic species depopulate it. Some poisonous species, however, exist in their own ecologic niches that occupy the bare land when there is not any palatable species. Manuscript profile -
Open Access Article
4 - Rangeland Restoration Analysis on the South Slope of Al-Jabal Al-Akhdar, Northeast Libya
Adel Mahmoud Mohd Bin Ismail Mohamad Alias Alias Sood -
Open Access Article
5 - Effects of Exclosure on Soil Properties in Winter Rangelands in Golestan Province, Iran
Hamid Niknahad Gharmakher Esmaeil Sheidai-Karkaj Isa Jafari -
Open Access Article
6 - Forage Loss Valuation under Traditional Pastoralism in Arid to Semiarid Rangelands of Iran
Azam Khosravi Mashizi Mohsen Sharafatmandrad -
Open Access Article
7 - The Impact of Exclosure on the Rehabilitation of Steppe Vegetation at Naâma Rangelands in Algeria
Anteur Djamel Benaradj Abdelkrim Boucherit Hafidha -
Open Access Article
8 - Study on Vegetation Changes of Natural Ranges in KhoyBilehvar Semi-Steppic Area of West Azarbaijan Province
M.T. Gaemi M. Akbarzade Sh. Abedi -
Open Access Article
9 - Selection of Appropriate Estimation Methods of Range Conditions (Case Study: Kabirkooh Rangelands of Zagros, Iran)
Freidoon Soleimani Parviz Karami Nosrat Safaian -
Open Access Article
10 - Effects of Grazing Exclusion on Plant Productivity and Carbon Sequestration (Case Study: Gomishan Rangelands, Golestan Province, Iran)
Hamid Niknahad Gharmakher Isa Jafari Foutami Arezou Sharifi -
Open Access Article
11 - Estimation of Soil Carbon Sequestration Rate in Steppes (Case Study: Saveh Rudshur Steppes)
M. Mahdavi H. Arzani M. Mesdaghi KH. Mahdavi J. Mahmodi M. Alizadeh -
Open Access Article
12 - Comparison between Some Vegetation Traits and Bioindicators in Two Grazing and Exclosure Areas (Case Study: Sorkhe-Graz and Valikbon Rangelands)
Soode Miarrostami Mohammad Hasan Jouri -
Open Access Article
13 - Studying the Vegetation Changes of Natural Rangelands in Inche Shorezar of Agh Ghala, North Golestan Province, Iran
Seyyed Ali Hosseini Jamshid Khatir Namany Morteza Akbarzadeh