Urmia UniversityForest Research and Development2476-35514420190220Classification of quantitative attributes of Zagros forest using Landsat 8-OLI and Random Forest algorithm (Case study: protected area of Manesht forests)Classification of quantitative attributes of Zagros forest using Landsat 8-OLI and Random Forest algorithm (Case study: protected area of Manesht forests)415434120651FALeila SoleimannejadPhd student of Forestry, Faculty of Natural Resources, University of Guilan, Sowmeh Sara, I. R. Iran.Amir Eslam BonyadProfessor, Department of Forestry, Faculty of Natural Resources, University of Guilan, Sowmeh Sara, I. R. Iran.0000-0002-3874-3649Ramin NaghdiProfessor, Department of Forestry, Faculty of Natural Resources, University of Guilan, Sowmeh Sara, I. R. Iran.Hooman LatifiAsistant professor, Department of Photogrammetry and Remote Sensing, School of Surveying and Geospatial Engineering, Khajeh Nasir Toosi University of Technology, Tehran, I. R. Iran.Journal Article20171231Proper forest management needs quantitative and precise estimates of forest stands characteristics. Remotely sensed imageries, due to accurate and broad spatial information, has become a cost-effective tool in forest management. Classification of forest attributes and generation of thematic maps are among the common applications of remote sensing. The objective of this study was to optimize Random Forest algorithm for classification of quantitative attributes of Manesht forest in Ilam Province. Two parameters including mtry= 8, 8, 6 and ntree =300, 800, 200 were used as the optimum numbers to classify basal area, canopy cover and density, respectively. The results showed the more accurate classification in canopy cover (overall accuracy=83%, Kappa coefficient=0.73), basal area (overall accuracy=78%, Kappa coefficient=0.72) and density (overall accuracy=75%, Kappa coefficient=0.69), respectively. Furthermore, variable importance index indicated distance-based vegetation indices are more important for basal area and density classification. It is concluded that the Random Forest algorithm as a non-parametric method could classify basal area, canopy cover and density properly.Proper forest management needs quantitative and precise estimates of forest stands characteristics. Remotely sensed imageries, due to accurate and broad spatial information, has become a cost-effective tool in forest management. Classification of forest attributes and generation of thematic maps are among the common applications of remote sensing. The objective of this study was to optimize Random Forest algorithm for classification of quantitative attributes of Manesht forest in Ilam Province. Two parameters including mtry= 8, 8, 6 and ntree =300, 800, 200 were used as the optimum numbers to classify basal area, canopy cover and density, respectively. The results showed the more accurate classification in canopy cover (overall accuracy=83%, Kappa coefficient=0.73), basal area (overall accuracy=78%, Kappa coefficient=0.72) and density (overall accuracy=75%, Kappa coefficient=0.69), respectively. Furthermore, variable importance index indicated distance-based vegetation indices are more important for basal area and density classification. It is concluded that the Random Forest algorithm as a non-parametric method could classify basal area, canopy cover and density properly.https://jfrd.urmia.ac.ir/article_120651_a0d5ab66068cc8c2c00f92732152e6e6.pdfUrmia UniversityForest Research and Development2476-35514420190220Evaluation of biodiversity, life form and chorology in ecological groups of Dena conserved area forestsEvaluation of biodiversity, life form and chorology in ecological groups of Dena conserved area forests435447120652FASeyyed Moeinedin ZamaniM.Sc. of Forestry, Department of Agriculture, Yasouj University, Yasuj, I. R. Iran.Roghaye ZolfaghariAssociate Professor, Department of Agriculture, Yasouj University, Yasuj, I. R. Iran.Sohrab AlvaninejadAssistant Professor, Department of Agriculture, Yasouj University, Yasuj, I. R. Iran.Journal Article20170508Study on different parameters of vegetation, especially, on ecological groups can help us to understand environmental factors affecting it. In order to studying of biodiversity, life forms and chorology in different ecological groups in protected area of western Dena forests with 600 ha area were done. Then 50 plots of 450 m<sup>2</sup> with dimensions 15×30 meters were established by random-systematic method. TWINSPAN analysis results showed that there were four ecological groups, <em>Smyrnieto-Schumanniatum </em>(first group), <em>Phlom</em><em>etum</em><em> olivieri</em> (second group), <em>Prangoetum ferula</em> (third group) and <em>Junipereto – Ferulagatum</em> (fourth group) in this area from low to high altitudes, respectively. Different parameters of alpha biodiversity between groups were not significant, although richness value of fourth group was lowest. Beta biodiversity results showed that first group and fourth groups had highest and lowest amount. Also results of life form showed that the first and second groups had higher amount of Therophyt, but phanerophyt species of third and fourth groups were higher than other two groups. On the other hand, fourth ecological groups had the lowest Irano- touranian chorotype and the highest Irano- touranian and Euro-Siberian chorotype. In addition, results showed that first group should be conserved in aspect of plant diversity. Also climate of this group is drier than other ecological groups.Study on different parameters of vegetation, especially, on ecological groups can help us to understand environmental factors affecting it. In order to studying of biodiversity, life forms and chorology in different ecological groups in protected area of western Dena forests with 600 ha area were done. Then 50 plots of 450 m<sup>2</sup> with dimensions 15×30 meters were established by random-systematic method. TWINSPAN analysis results showed that there were four ecological groups, <em>Smyrnieto-Schumanniatum </em>(first group), <em>Phlom</em><em>etum</em><em> olivieri</em> (second group), <em>Prangoetum ferula</em> (third group) and <em>Junipereto – Ferulagatum</em> (fourth group) in this area from low to high altitudes, respectively. Different parameters of alpha biodiversity between groups were not significant, although richness value of fourth group was lowest. Beta biodiversity results showed that first group and fourth groups had highest and lowest amount. Also results of life form showed that the first and second groups had higher amount of Therophyt, but phanerophyt species of third and fourth groups were higher than other two groups. On the other hand, fourth ecological groups had the lowest Irano- touranian chorotype and the highest Irano- touranian and Euro-Siberian chorotype. In addition, results showed that first group should be conserved in aspect of plant diversity. Also climate of this group is drier than other ecological groups.https://jfrd.urmia.ac.ir/article_120652_8aa3f8a37c1906ec925d18e5c89e2319.pdfUrmia UniversityForest Research and Development2476-35514420190220Site Selection and Analyzing the Development Status of Urban Forestry in Tabriz Using GIS and MCDMSite Selection and Analyzing the Development Status of Urban Forestry in Tabriz Using GIS and MCDM449462120653FAOmid RafieyanAssistant Professor, Department of Environment, Tabriz Branch, Islamic Azad University, Tabriz, I. R. Iran.Journal Article20180105With the development of urbanization, humans gradually shifted away from nature and, to the same extent and the environmental, physical and spiritual needs of man to the green space are increased. The objective of this study is to locate areas prone to developing urban forestry in the metropolis of Tabriz, from the point of view of the necessity of development and the need of citizens (not ecologically) and present developmental solutions. 14 criteria were chosen as standardized in format of Raster maps based on previous research and expert opinions. The pair comparison table comprised the criteria and the weight and importance of each criterion were calculated. After completing the multi-criteria evaluation process, the final map of the priority areas for the development of urban forestry was produced and the area and the percentage of the first, second and third priorities were calculated. Accordingly, 29.8% of the Tabriz area has the highest priority for the development of green space. In the next step, by overlaying the finalized map with the current land use map, the area and percentage of each of the first, second and third priorities located in the current land use classes were obtained. Comparison of these maps showed that 50% of the priority areas for urban forest development, were located in the existing residential areas, 39% were in vacant fields, 9.5% were in agricultural lands and gardens, and 1.5% were in the current green space. These results indicate excessive and unbalanced construction accumulation in most municipality districts of Tabriz. Therefore the general policy in these areas should be stopping new construction and prioritize changing the worn out texture of the city to green space.With the development of urbanization, humans gradually shifted away from nature and, to the same extent and the environmental, physical and spiritual needs of man to the green space are increased. The objective of this study is to locate areas prone to developing urban forestry in the metropolis of Tabriz, from the point of view of the necessity of development and the need of citizens (not ecologically) and present developmental solutions. 14 criteria were chosen as standardized in format of Raster maps based on previous research and expert opinions. The pair comparison table comprised the criteria and the weight and importance of each criterion were calculated. After completing the multi-criteria evaluation process, the final map of the priority areas for the development of urban forestry was produced and the area and the percentage of the first, second and third priorities were calculated. Accordingly, 29.8% of the Tabriz area has the highest priority for the development of green space. In the next step, by overlaying the finalized map with the current land use map, the area and percentage of each of the first, second and third priorities located in the current land use classes were obtained. Comparison of these maps showed that 50% of the priority areas for urban forest development, were located in the existing residential areas, 39% were in vacant fields, 9.5% were in agricultural lands and gardens, and 1.5% were in the current green space. These results indicate excessive and unbalanced construction accumulation in most municipality districts of Tabriz. Therefore the general policy in these areas should be stopping new construction and prioritize changing the worn out texture of the city to green space.https://jfrd.urmia.ac.ir/article_120653_02cf107b1e5d6a2c7ac0d783cd681c6d.pdfUrmia UniversityForest Research and Development2476-35514420190220Impact of plantation with Robinia pseudoacacia and Pinus eldarica on soil physic-chemical properties and Co2 emission in Tehran urban landscapeImpact of plantation with Robinia pseudoacacia and Pinus eldarica on soil physic-chemical properties and Co2 emission in Tehran urban landscape463476120654FABaharak AbdollahzadehPhd student of Silviculture and Forest Ecology, Sari Agricultural and Natural Resources University, Sari,I. R. Iran.Seyed Mohammad HojjatiAssociate Professor, Sari Agricultural and Natural Resources University, Sari, I. R. Iran.Khosro Sagheb TalebiAssociate Professor, Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, I. R. Iran.0000-0001-6831-7125Yahya KoochAssistant Professor, Department of Forestry, Tarbiat Modares University, Noor, I. R. Iran.Journal Article20171220The present study was carried out to investigate the effect of two species of <em>Pinus eldarica</em> and <em>Robinia pseudoacacia</em> on soil properties and carbon dioxide emission in the Khargoosh dareh forest park in Tehran. For this purpose, four plots of 20 × 20 meters sample were selected randomly and soil sampling was carried out from the center of each sample plot at a depth of 10 cm. Also the carbon dioxide emissions were measured at 35 points per stand. In order to investigate the effect of seasonal variation on Co2 emissions, measurements were done in both spring and autumn. The results showed that <em>Robinia pseudoacacia</em> increased potassium, nitrogen, phosphorus, electrical conductivity, organic carbon and nitrogen sequestration in soil compared to <em>Pinus eldarica</em>, but the acidity, organic matter, calcium carbonate, bulk density, moisture content, soil texture and carbon sequestration did not show any significant difference between two species.The present study was carried out to investigate the effect of two species of <em>Pinus eldarica</em> and <em>Robinia pseudoacacia</em> on soil properties and carbon dioxide emission in the Khargoosh dareh forest park in Tehran. For this purpose, four plots of 20 × 20 meters sample were selected randomly and soil sampling was carried out from the center of each sample plot at a depth of 10 cm. Also the carbon dioxide emissions were measured at 35 points per stand. In order to investigate the effect of seasonal variation on Co2 emissions, measurements were done in both spring and autumn. The results showed that <em>Robinia pseudoacacia</em> increased potassium, nitrogen, phosphorus, electrical conductivity, organic carbon and nitrogen sequestration in soil compared to <em>Pinus eldarica</em>, but the acidity, organic matter, calcium carbonate, bulk density, moisture content, soil texture and carbon sequestration did not show any significant difference between two species.https://jfrd.urmia.ac.ir/article_120654_f2ffbca6d48acc3e842cf987f21457c1.pdfUrmia UniversityForest Research and Development2476-35514420190220Roots spatial distribution of Carpinus betulus in lowland Hyrcanian forests (Kheyrud forest, Nowshahr)Roots spatial distribution of Carpinus betulus in lowland Hyrcanian forests (Kheyrud forest, Nowshahr)477488120655FAAzadeh DeljoueiPhD of Forest Engineering, University of Tehran, Karaj, I.R. Iran.Ehsan AbdiAssociate Professor, Faculty of Natural Resources, University of Tehran, Karaj, I.R. Iran.Baris MajnounianProfessor, Faculty of Natural Resources, University of Tehran, Karaj, I.R. Iran.Massimiliano SchwarzAssistant Professor, School of Agricultural, Forest and Food Sciences HAFL, Bern University of Applied Sciences, Zollikofen, Switzerland.Journal Article20180224e aim of this study was to assess spatial distribution of roots by <em>Carpinus betulus</em> trees in Patom district of Kheyrud forest. For this purpose, five trees at small, medium and large diameter classes were selected randomly (totally 15 trees). In order to measure root area ratio (RAR), three soil profiles were dug at both up and down sides of trees (size 50×100 cm) by wall trench method at the horizontal distance of 1, 2, and 3.5 m from tree stem (totally 90 profiles). 10 cm horizons were identified on wall trenches and all of the root diameters were measured. Finally, RAR was calculated for each soil horizon. The RAR was decreased logarithmically by increasing the soil depth. The results of ANCOVA showed significant difference between roots distribution at small, medium and large classes. The results of t-test showed that the value of the index at first, second and third trenches wall of small class at upside significantly more than down side. At medium diameter class only third trench of upside significantly more than down side. At large diameter class, first trench of upside was significantly greater than first trench of down side. The results of this study increase our information about vegetation role in stabilizing slopes and will improve the modeling of slope stability accordance to the DBH classes.e aim of this study was to assess spatial distribution of roots by <em>Carpinus betulus</em> trees in Patom district of Kheyrud forest. For this purpose, five trees at small, medium and large diameter classes were selected randomly (totally 15 trees). In order to measure root area ratio (RAR), three soil profiles were dug at both up and down sides of trees (size 50×100 cm) by wall trench method at the horizontal distance of 1, 2, and 3.5 m from tree stem (totally 90 profiles). 10 cm horizons were identified on wall trenches and all of the root diameters were measured. Finally, RAR was calculated for each soil horizon. The RAR was decreased logarithmically by increasing the soil depth. The results of ANCOVA showed significant difference between roots distribution at small, medium and large classes. The results of t-test showed that the value of the index at first, second and third trenches wall of small class at upside significantly more than down side. At medium diameter class only third trench of upside significantly more than down side. At large diameter class, first trench of upside was significantly greater than first trench of down side. The results of this study increase our information about vegetation role in stabilizing slopes and will improve the modeling of slope stability accordance to the DBH classes.https://jfrd.urmia.ac.ir/article_120655_efcd75a8ad014221db299749ea56bf2d.pdfUrmia UniversityForest Research and Development2476-35514420190220The use of agar alternatives in cypress in vitro culture (Cupressus sempervirens var. horizontalis)The use of agar alternatives in cypress in vitro culture (Cupressus sempervirens var. horizontalis)489499120656FAElahe ZamaniM.Sc. Student of Horticultural Science, Faculty of Agriculture & Natural Resources, Ardakan University, Ardakan, I.R. Iran.Maryam Dehestani-ArdakaniAssistant Professor, Department of Horticultural Science, Faculty of Agriculture & Natural Resources, Ardakan University, Ardakan, I.R. Iran.Kazem Kamali AliabadiAssistant Professor, Department of Soil Science, Faculty of Natural Resources, Yazd University, Yazd,
I.R. Iran.Journal Article20180107In this article, possibility of using of plant seeds of Lallemantia, Sand plantain and chia also tragacnth (50, 100 and 150 g/l), starch of wheat and corn (100, 150 and 200 g/l) instead of agar (6, 7 and 8 g/l) in MS medium by 4000 years old of Abarkooh cypress explant (<em>Cupressus sempervirens</em> var. <em>horizontalis</em>) was investigated. After 30 days of shoot explant establishment in culture medium, percentage of browning, degree of greening and the number of new buds were evaluated. According to the results, the highest and the lowest percentage of browning were obtained in 50, 100 and 150 g/l of chia and agar treatment respectively and it did not show significant difference with starch of corn, sand plantain and lallemantia seeds treatments. With increasing the concentration of materials, percentage of browning decreased. The highest degree of greening was observed in 150 g/l lallemantia and sand plantain seeds and 200 g/l starch of corn treatments and it did not show significant difference with agar (6 g/l). The lowest degree of greening was obtained in two concentrations of 150 and 200 g/l of chia seeds treatments. The highest number of buds was observed in agar treatment by concentrations of 6 and 7 g/l. According to the results, among different investigated materials in this paper, starch of corn was the best and it is also cost-effective compared to the agar.In this article, possibility of using of plant seeds of Lallemantia, Sand plantain and chia also tragacnth (50, 100 and 150 g/l), starch of wheat and corn (100, 150 and 200 g/l) instead of agar (6, 7 and 8 g/l) in MS medium by 4000 years old of Abarkooh cypress explant (<em>Cupressus sempervirens</em> var. <em>horizontalis</em>) was investigated. After 30 days of shoot explant establishment in culture medium, percentage of browning, degree of greening and the number of new buds were evaluated. According to the results, the highest and the lowest percentage of browning were obtained in 50, 100 and 150 g/l of chia and agar treatment respectively and it did not show significant difference with starch of corn, sand plantain and lallemantia seeds treatments. With increasing the concentration of materials, percentage of browning decreased. The highest degree of greening was observed in 150 g/l lallemantia and sand plantain seeds and 200 g/l starch of corn treatments and it did not show significant difference with agar (6 g/l). The lowest degree of greening was obtained in two concentrations of 150 and 200 g/l of chia seeds treatments. The highest number of buds was observed in agar treatment by concentrations of 6 and 7 g/l. According to the results, among different investigated materials in this paper, starch of corn was the best and it is also cost-effective compared to the agar.https://jfrd.urmia.ac.ir/article_120656_45be0187ead702c1f2112d07a481fed0.pdfUrmia UniversityForest Research and Development2476-35514420190220Distribution of rain fall in pure Tamarix arceuthoides stand in the riparian forestsDistribution of rain fall in pure Tamarix arceuthoides stand in the riparian forests501513120657FAZeynab JoukarM.Sc. student of forestry, Faculty of Natural Resources and Environment, Behbahan Khatam Al-Anbia University of Technology, Behbahan, I. R. Iran.Mostafa MoradiAssistant Professor, Department of forestry, Faculty of Natural Resources and Environment, Behbahan Khatam Al-Anbia University of Technology, Behbahan, I. R. Iran.Reza BasiriAssociated Professor, Department of forestry, Faculty of Natural Resources and Environment, Behbahan Khatam Al-Anbia University of Technology, Behbahan, I. R. Iran.Journal Article20171022Arid and semi-arid ecosystems cover about one-third of the world's dryland and is one of the most vulnerable ecosystems due to periodic droughts and increased use of water resources. This study aimed to evaluate the distribution of rain (stemflow, Interception loss and throughfall) in the <em>Tamarix arceuthoides</em> over a period of rainfall (December 2015 to April 2016) in the riparian forests of Maroon. In order to measure the total rainfall, three plastic collectors were placed in open field and closed to the study stand to collect the gross rain. Tress were divided in three classes based on the tree diameter. Three individual tree were selected in each diameter classes for stemflow measurement. Througfall was calculated using the 50 plastic collectors that were placed 10 m apart in the studied stand. The results showed that the stemflow, throughfall and interception in the fall and growth seasons, are, 3, 62, 35, 2, 53, 45 percent respectively. There was significant positive correlation between gross rain (GR) and interception in growing and non-growing seasons. Furthermore, increasing in the total rainfall values, will result in the stemflow, throughfall and rainfall interception increment. But the interception had reduction trend by increasing the gross rainfall. Our result indicated that increasing in tree diameter can result in stemflow reduction. Our result showed that about 45 percent of precipitation will be out of reach by forest floor and return to the atmosphere by evaporation.Arid and semi-arid ecosystems cover about one-third of the world's dryland and is one of the most vulnerable ecosystems due to periodic droughts and increased use of water resources. This study aimed to evaluate the distribution of rain (stemflow, Interception loss and throughfall) in the <em>Tamarix arceuthoides</em> over a period of rainfall (December 2015 to April 2016) in the riparian forests of Maroon. In order to measure the total rainfall, three plastic collectors were placed in open field and closed to the study stand to collect the gross rain. Tress were divided in three classes based on the tree diameter. Three individual tree were selected in each diameter classes for stemflow measurement. Througfall was calculated using the 50 plastic collectors that were placed 10 m apart in the studied stand. The results showed that the stemflow, throughfall and interception in the fall and growth seasons, are, 3, 62, 35, 2, 53, 45 percent respectively. There was significant positive correlation between gross rain (GR) and interception in growing and non-growing seasons. Furthermore, increasing in the total rainfall values, will result in the stemflow, throughfall and rainfall interception increment. But the interception had reduction trend by increasing the gross rainfall. Our result indicated that increasing in tree diameter can result in stemflow reduction. Our result showed that about 45 percent of precipitation will be out of reach by forest floor and return to the atmosphere by evaporation.https://jfrd.urmia.ac.ir/article_120657_2d5a1dd47cfc9c9e5f5b30778ff298e1.pdfUrmia UniversityForest Research and Development2476-35514420190220Designing and implementation of a conceptual model of database for harvesting data of Northern forest of IranDesigning and implementation of a conceptual model of database for harvesting data of Northern forest of Iran515532120658FAAli MahdaviAssociate professor, Department of Forest Sciences, Faculty of Agriculture, University of Ilam, I. R. IranJournal Article20170711Looking at the different stages of wood logging operations in north forest of Iran we will see that a huge amount of data is collected and in various traditional and digital methods are stored. Todays, despite the emergence of new database and databank systems, unfortunately, most of the General Natural Resource offices of Iran even in the northern provinces, do not have any comprehensive and smart information system and database so that massive amount of information from various stages of harvesting operations could be collected and stored efficiently. To facilitate in storage, processing and delivery of harvesting information of north forest, a harvesting database system using Entity – relationship data model was designed. Access software version.2016 was used to implement the entity- relationship data model or physical design of database system. The designed system includes several components or subsystems (marking of trees, cutting, re-measuring, grading, wood extraction from the forest field and depot, districts certification, forestry plans, forestry plans executives, and out of forestry plans cutting licenses). Using the designed system, the information and data requirements for further investigation and processing from forest harvesting data for forest management decision making can be provided. <br /><br />Entity – relationship data model was designed. Access software version.2016 was used to implement the entity- relationship data model or physical design of database system. The designed system includes several components or subsystems (marking of trees, cutting, re-measuring, grading, wood extraction from the forest field and depot, districts certification, forestry plans, forestry plans executives and out of forestry plans cutting licenses). Using the designed system, the information and data requirements for further investigation and processing from forest harvesting data for forest management decision making can be provided.Looking at the different stages of wood logging operations in north forest of Iran we will see that a huge amount of data is collected and in various traditional and digital methods are stored. Todays, despite the emergence of new database and databank systems, unfortunately, most of the General Natural Resource offices of Iran even in the northern provinces, do not have any comprehensive and smart information system and database so that massive amount of information from various stages of harvesting operations could be collected and stored efficiently. To facilitate in storage, processing and delivery of harvesting information of north forest, a harvesting database system using Entity – relationship data model was designed. Access software version.2016 was used to implement the entity- relationship data model or physical design of database system. The designed system includes several components or subsystems (marking of trees, cutting, re-measuring, grading, wood extraction from the forest field and depot, districts certification, forestry plans, forestry plans executives, and out of forestry plans cutting licenses). Using the designed system, the information and data requirements for further investigation and processing from forest harvesting data for forest management decision making can be provided. <br /><br />Entity – relationship data model was designed. Access software version.2016 was used to implement the entity- relationship data model or physical design of database system. The designed system includes several components or subsystems (marking of trees, cutting, re-measuring, grading, wood extraction from the forest field and depot, districts certification, forestry plans, forestry plans executives and out of forestry plans cutting licenses). Using the designed system, the information and data requirements for further investigation and processing from forest harvesting data for forest management decision making can be provided.https://jfrd.urmia.ac.ir/article_120658_86d8c66a6557334cf7f2586496f96d3a.pdfUrmia UniversityForest Research and Development2476-35514420190220Effect of harvest intensity on volume growth of mixed beech stands in Asalem Nav forestsEffect of harvest intensity on volume growth of mixed beech stands in Asalem Nav forests533547120659FABehroz Karamdost MarianDirector of Research and Innovation, Shafarood Forest Company, Rezvanshahr, I. R. Iran.Amireslam BonyadProfessor, Faculty of Natural Resources, Department of Forestry, University of Guilan, I. R. Iran.0000-0002-3874-3649Farzam TavankarAssistant Prof., Department of Forestry, Khalkhal Branch, Islamic Azad University, Khalkhal, I. R. Iran.0000-0002-2308-0934Journal Article20171216The aim of this research was analysis of the effect of harvest intensity on the volume growth of valuable beech forests in the North of Iran. For this reason, volume growth of stand trees were estimated by permanent sample plots during a 10 year period in three parcels with different harvest intensities of Low, medium, and high (6, 13.1 and 18 m<sup>3</sup>/ha, respectively), and in a protected parcel (control) in Asalem Nav mixed beech forests. Results indicated the harvest intensity had significant effect on the stand volume growth (P<0.01). Average stand volume growth in harvested parcel with medium intensity (9.3 m<sup>3</sup>/ha/yr) was significantly (P<0.01) higher than the low and high intensity harvested parcels (7.4 and 4.8 m<sup>3</sup>/ha/yr, respectively), and protected parcel (6.8 m<sup>3</sup>/ha/yr). Stand volume growth decreased by increasing primary standing volume. Harvest intensity had also significant effect (P<0.01) on volume growth of trees DBH (diameter at breast height) classes. Low DBH trees (< 25 cm) in the high intensity harvested parcel, medium DBH trees (25-50 cm) in the medium harvest intensity parcel, and high DBH trees (> 50 cm) in the low intensity harvested parcel have the highest values of volume growth. Standing volume of harvested parcels were lower than the standing volume of control parcel about 26 to 42% in the primary of period, and about 21 to 33% in the end of period.The aim of this research was analysis of the effect of harvest intensity on the volume growth of valuable beech forests in the North of Iran. For this reason, volume growth of stand trees were estimated by permanent sample plots during a 10 year period in three parcels with different harvest intensities of Low, medium, and high (6, 13.1 and 18 m<sup>3</sup>/ha, respectively), and in a protected parcel (control) in Asalem Nav mixed beech forests. Results indicated the harvest intensity had significant effect on the stand volume growth (P<0.01). Average stand volume growth in harvested parcel with medium intensity (9.3 m<sup>3</sup>/ha/yr) was significantly (P<0.01) higher than the low and high intensity harvested parcels (7.4 and 4.8 m<sup>3</sup>/ha/yr, respectively), and protected parcel (6.8 m<sup>3</sup>/ha/yr). Stand volume growth decreased by increasing primary standing volume. Harvest intensity had also significant effect (P<0.01) on volume growth of trees DBH (diameter at breast height) classes. Low DBH trees (< 25 cm) in the high intensity harvested parcel, medium DBH trees (25-50 cm) in the medium harvest intensity parcel, and high DBH trees (> 50 cm) in the low intensity harvested parcel have the highest values of volume growth. Standing volume of harvested parcels were lower than the standing volume of control parcel about 26 to 42% in the primary of period, and about 21 to 33% in the end of period.https://jfrd.urmia.ac.ir/article_120659_765dc570aebeb13299b2259c2bc61c69.pdf