Showing 3 results for Saghari
Engineer Golnar Mahmoodimoghadam, Dr Mohamad Saghari, Dr Moslem Rostampour, Engineer Bahareh Chakoshi,
Volume 9, Issue 1 (7-2015)
Abstract
Water harvesting methods such as small arc basins have been identified as effective methods to increase forage production in rangelands. In this study, the effects of these small arc basins on forage production, soil moisture and soil texture conditions were investigated. A systematic-random sampling was used to collect data from three transects established perpendicularly to the dominant slope of the study area. Productions of range plants were measured in 40 samples (at the end of spring) and then dried in shadow and weighed. One hundred sixty samples were collected from 0-20 and 20-40 cm of soil surface at the beginning and the end of rainfall season. Data were analyzed by General Linear Model (GLM) procedure. The results indicated that the used water harvesting method resulted to a significant two times increase of plant productions in compare with the control site (p<0.01). Also the findings of this study indicated that the main interaction effect of depth, season and sampling area on soil moisture fluctuations were significant (p<0.01). The results also showed that the construction of this system had a positive effect on the texture and silt content of soil in the study area. Therefore, this method can be suggested as an appropriate method for storing rainfall and increasing forage production in rangeland ecosystems.
Tahereh Khademi, Moslem Rostampour, Mohammad Saghari,
Volume 15, Issue 4 (12-2021)
Abstract
Rangelands, as one of the basic sources of production, have a special place in supplying livestock feed requirements. Considering the role of nutritive value characteristics on determining grazing capacity, the aim of this study was to compare nutritive value of Stipa barbata, Stipa capensis, Eryngium billardieri, Artemisia aucheri and Zygophyllum atriplicoides in rangelands of Kaja and Chahno ,Ferdows, South Khorasan province. For this purpose, in the each plant type, 3 representative areas were selected and inside them, 10 individuals of each species were cut at the flowering stage. Then, nutrition value indices such as Crude Protein (CP), Acid Detergent Fiber (ADF), Neutral Detergent Fiber (NDF), Dry Matter Digestibility (DMD), Metabolizable Energy (ME) and Digestible Energy (DE), as well as Sodium (Na), Calcium (Ca), Magnesium (Mg) and Potassium (K) in aerial parts of the plant species were determined by conventional methods in the laboratory. Analysis of variance (ANOVA) was used to compare the studied characteristics between the plant species. The results showed that there was a significant difference between the amount of CP, Na, K, Ca and Mg in the studied plant species (p≤0.01). Average CP, ADF and ME values were higher than those of critical limits to meet animal maintenance. Artemisia aucheri has the highest amount of Ca (2.5%) and Mg (0.88%) and Zygophyllum atriplicoides has the highest CP (18.64%) and K (1.03%), so it is the highest quality plant species in the rangelands of Kaja and Chahno, Ferdows.
Moslem Rostampoor, Mohammad Saghari,
Volume 17, Issue 1 (5-2023)
Abstract
Background and Objectives: Mountainous habitats are sensitive areas with lower plant diversity, and degradation caused by human activities has resulted in vegetation loss or reduction. This study aimed to investigate the impact of different intensities of degradation on soil biological indicators in the Mirkola region of Kojoor district, Mazandaran Province, Iran, focusing on Crataegus and Berberis, which are the dominant shrubs in the mountainous habitats of northern Iran.
Methodology: Four sites with different percentages of cover (90-100, 70-60, 40-30, and 10-0 percent) were selected as non-degraded and degraded habitats with light, moderate, and heavy degradation intensities. Three one-hectare plots were established in each habitat, and five soil samples were taken from each plot at depths of 0-10, 10-20, and 20-30 cm. In total, 45 soil samples were collected and analyzed for soil biomass, carbon, nitrogen, phosphorus, calcium, magnesium, and enzymatic activity.
Results: The non-degraded habitat had the highest biomass of coarse and fine roots, carbon content, and nitrogen and phosphorus content in roots. The highest calcium values were observed in the fine roots of non-degraded and low degraded habitats, while the non-degraded habitat had the highest calcium values in coarse roots. Magnesium values were lowest in the coarse and fine roots of habitats with heavy degradation. The highest activity of urease enzyme was observed in non-degraded habitats and the upper soil layers, while arylsulfatase and invertase enzyme activities decreased significantly with increasing degradation intensity.
Conclusion: The study findings suggest that vegetation degradation has a significant impact on soil ecological activities. Protection of natural vegetation can have positive effects on soil quality and health, and the study provides valuable information for natural resource managers to evaluate the ecological capacity and nutrient cycles of natural vegetation in mountainous areas of northern Iran.
