Abstract: (6 Views)
Summary:
Extended abstract:
Introduction and goal:
Zagros forests, as the second natural forest ecosystem in Iran, play an important role in water supply, soil conservation, climate adjustment and social economic balance in the country. They have regressed. Certainly, the continuation of the process of destruction of Zagros forests will bring irreparable damages to this unique ecosystem and natural resources of the country. Planning for their preservation, protection and restoration is very important and necessary, and this issue requires detailed Silviculture and ecological studies in them. Today, information about the distribution of plant population in the community is of great importance for management programs and studies, and without having information about the distribution of people in the community, any program will face problems in the forest Zagros can also depend on the spatial distribution of Iranian oak trees and search groups It has an important role in the dynamics of those ecosystems and their optimal management, therefore, knowledge of the distribution pattern of trees and oak trees and understanding their relationship with each other can be used in protection, restoration and breeding operations for the forests in them And this can play an important role in understanding the dynamics of ecosystems and their optimal management. This research was carried out with the aim of investigating and understanding the differences and similarities of the spatial structure as well as understanding the distribution pattern of the dominant forest stands in the protected forests of Qalajah mountain in Kermanshah province, and its results can provide important points to forest scientists and those involved in forest revitalization.
Materials and methods:
In order to carry out this research, a part of the oak habitat in the forests of Qalajah Mountain in Gilangarb city was considered in Kermanshah province. In this research, while identifying three forest high stand, coppice stand, coppice-high stand, three sample plots of one hectare were randomly taken in each of them, and the distance-azimuth method was used to determine the position of each stand. Then, then the structural characteristics of species name, growth form, number of sprout, diameter at breast height, height of trees and the dominant height of the coppice trees and two perpendicular diameters of the crown were recorded. In the next step, while calculating the structural characteristics of the Stands In order to model the spatial distribution pattern of trees and search groups in the studied forest stands, the function related to the distance between points L was used, and also the spatial dependence of the size of trees and search groups was investigated by using the Kmm(r) correlation function
Result:
The density of Iranian oak trees and species high stand, high-coppice stand, and Coppice stand is 117, 129, and 126 trees per hectare, respectively, and their canopy cover is 30.9, 30.63, and 19.8 percent, respectively. The results also showed that the spatial distribution pattern of trees and the sprout clump of Iranian oak in all three forest stands studied mainly follow a random spatial distribution pattern, except for limited distances that have a uniform pattern or have a clumped pattern due to habitat heterogeneity, and on the other hand, considering the importance of the crown in the structure Trees and sprout clump The results of the analysis of the signed correlation function about the characteristics of the crown diameter of trees and Iranian oak trees in the studied stands showed that the value of the Kmm function for all three stands is within the Monte Carlo range, according to the other trees and trees in the stands. In terms of the characteristic of crown diameter, the above are randomly placed next to each other and there is no significant correlation between the spatial distribution of trees and sprout clump in terms of the size of the crown diameter.
Conclusion:
The spatial distribution pattern of the three and sprout studied stands mainly follows the random spatial pattern. The random pattern in all three stands can be caused by the lack of natural reproduction or its disruption, reaching the maturity stage and not needing maternal bases, as well as the excessive exploitation of the forest. Also, are mainly located next to each other with different crown diameters, and therefore, there is no spatial correlation between them. Only at very limited intervals, in patches, and due to specific environmental conditions, do trees and sprout clump have correlations and similarities in terms of crown diameter characteristics. In general, it can be stated that the results of the marked correlation function study indicate that the effect of the structural characteristic of the crown diameter in the sprout clump of trees in the studied stands on each other cannot mainly indicate their positive or negative facilitating effect on each other.
In other words, the results of the correlation function of the sign indicate that the characteristic effect of the crown diameter in the trees and the sprout clump the investigated stands on each other cannot indicate their positive or negative facilitating effect on each other.
Extended abstract:
Introduction and goal:
Zagros forests, as the second natural forest ecosystem in Iran, play an important role in water supply, soil conservation, climate adjustment and social economic balance in the country. They have regressed. Certainly, the continuation of the process of destruction of Zagros forests will bring irreparable damages to this unique ecosystem and natural resources of the country. Planning for their preservation, protection and restoration is very important and necessary, and this issue requires detailed Silviculture and ecological studies in them. Today, information about the distribution of plant population in the community is of great importance for management programs and studies, and without having information about the distribution of people in the community, any program will face problems in the forest Zagros can also depend on the spatial distribution of Iranian oak trees and search groups It has an important role in the dynamics of those ecosystems and their optimal management, therefore, knowledge of the distribution pattern of trees and oak trees and understanding their relationship with each other can be used in protection, restoration and breeding operations for the forests in them And this can play an important role in understanding the dynamics of ecosystems and their optimal management. This research was carried out with the aim of investigating and understanding the differences and similarities of the spatial structure as well as understanding the distribution pattern of the dominant forest stands in the protected forests of Qalajah mountain in Kermanshah province, and its results can provide important points to forest scientists and those involved in forest revitalization.
Materials and methods:
In order to carry out this research, a part of the oak habitat in the forests of Qalajah Mountain in Gilangarb city was considered in Kermanshah province. In this research, while identifying three forest high stand, coppice stand, coppice-high stand, three sample plots of one hectare were randomly taken in each of them, and the distance-azimuth method was used to determine the position of each stand. Then, then the structural characteristics of species name, growth form, number of sprout, diameter at breast height, height of trees and the dominant height of the coppice trees and two perpendicular diameters of the crown were recorded. In the next step, while calculating the structural characteristics of the Stands In order to model the spatial distribution pattern of trees and search groups in the studied forest stands, the function related to the distance between points L was used, and also the spatial dependence of the size of trees and search groups was investigated by using the Kmm(r) correlation function
Result:
The density of Iranian oak trees and species high stand, high-coppice stand, and Coppice stand is 117, 129, and 126 trees per hectare, respectively, and their canopy cover is 30.9, 30.63, and 19.8 percent, respectively. The results also showed that the spatial distribution pattern of trees and the sprout clump of Iranian oak in all three forest stands studied mainly follow a random spatial distribution pattern, except for limited distances that have a uniform pattern or have a clumped pattern due to habitat heterogeneity, and on the other hand, considering the importance of the crown in the structure Trees and sprout clump The results of the analysis of the signed correlation function about the characteristics of the crown diameter of trees and Iranian oak trees in the studied stands showed that the value of the Kmm function for all three stands is within the Monte Carlo range, according to the other trees and trees in the stands. In terms of the characteristic of crown diameter, the above are randomly placed next to each other and there is no significant correlation between the spatial distribution of trees and sprout clump in terms of the size of the crown diameter.
Conclusion:
The spatial distribution pattern of the three and sprout studied stands mainly follows the random spatial pattern. The random pattern in all three stands can be caused by the lack of natural reproduction or its disruption, reaching the maturity stage and not needing maternal bases, as well as the excessive exploitation of the forest. Also, are mainly located next to each other with different crown diameters, and therefore, there is no spatial correlation between them. Only at very limited intervals, in patches, and due to specific environmental conditions, do trees and sprout clump have correlations and similarities in terms of crown diameter characteristics. In general, it can be stated that the results of the marked correlation function study indicate that the effect of the structural characteristic of the crown diameter in the sprout clump of trees in the studied stands on each other cannot mainly indicate their positive or negative facilitating effect on each other.
In other words, the results of the correlation function of the sign indicate that the characteristic effect of the crown diameter in the trees and the sprout clump the investigated stands on each other cannot indicate their positive or negative facilitating effect on each other.
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