| Abstrakt: |
Background and objectives Environmental and edaphic conditions influence the distribution. One of the important goals of this research is to identify relationships between soil and vegetation factors and the kind of soil characteristics in which these species are scattered. Taking a step in this direction will prevent habitat destruction and help to repair damaged areas. Materials and methods In this way, three representative areas were determined by the physiognomic-systematic method of selected representative areas. They were found in the Ferula's habitat. Then, the area with less than 15% coverage was considered the least dense area, the area between 15-30% coverage of the average representative area, and the vegetation percentage of more than 30% was also considered the high-density representative area. In each representative area, eight transects of 1000 meters were considered in a systematic random method and vertical to each other. Since the area had a slope due to the inclusion of slope changes in sampling, quadrat sampling with transect was used in each representative area. Plot size was determined by the minimum level method. Species density was measured in three areas with 2 x 2 square meter plots and 240 plots. In order to prepare soil samples, two soil profiles were dug on each transect at a distance of 500 meters; a total of 48 profiles were dug, and soil samples were taken from a depth of 0 to 30 cm. In each representative area, three transects of 1000 meters were placed perpendicular to each other, and in each transect, ten bases with a distance of 100 meters, their gum was taken, and after collection, it was transferred to the water and soil laboratory of Hormozgan University. The amount of gum in each base was measured with a digital scale with an accuracy of 0.001. A comparison of the production of Anguza gum was made in the habitats. The changes of edaphic factors in representative areas with a low density of 15.8, medium density of 27.8, and high density of 46.9 bases per hectare of Anguze were analyzed by SPSS software by GLM test. Results In areas with low density, the level of acidity was 7.4; in the area with medium density, it was 7.8; and in the dense area, it was 8. According to the results, soil acidity is high in the areas where the soil is dense, and soil acidity is low in the areas with low density. This indicates that this plant was more compatible with alkaline soils, and its density decreased with soil acidification. The process of changing the percentage of density under the influence of the percentage of organic matter showed that organic matter directly affects the plant's density. With the increase of organic matter, the density of this plant will also increase. When the soil is weak in organic matter, this plant's density will also decrease. According to the difference in the averages, the less dense area has the lowest amount of potassium, and the area with high density also has the highest amount of potassium. The calcium + magnesium content results were the lowest in the area with low density, and the highest amount was in the dense area of the ferula habitat. The number of bases per unit area increased in areas with higher sand content, and the number of bases decreased in clay soils. This plant is not compatible with salty and acidic soil. Conclusion Knowing plant species' ecological needs and performance is necessary to carry out remedial activities in dry and desert ecosystems. Bestak City has many ferula plantations in Hormozgan province, and these plantations can produce gum, exchange currency, and have high economic value for local communities. The height of 1900 to 2500 meters is one of the characteristics of the ferula habitat in Bastak. This species has a more excellent geographical distribution in areas with sand, silt, and high acidity, and its density has increased, and its distribution has decreased in clay areas. According to the findings, this plant seems to grow in light soils. [ABSTRACT FROM AUTHOR] |
