Template-Type: ReDIF-Article 1.0 Author-Name: A. Parsakhoo Author-Workplace-Name: Department of Forestry, Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resources University, Sari, Iran Author-Name: M. Lotfalian Author-Workplace-Name: Department of Forestry, Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resources University, Sari, Iran Author-Name: A. Kavian Author-Workplace-Name: Department of Watershed Management, Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resources University, Sari, Iran Author-Name: S.A. Hosseini Author-Workplace-Name: Department of Forestry, Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resources University, Sari, Iran Author-Name: M. Demir Author-Workplace-Name: Department of Forest Construction and Transportation, Faculty of Forestry, Istanbul University, Istanbul, Turkey Title: The effects of Rubus hyrcanus L. and Philonotis marchica (Hedw.) Brid. on soil loss prevention from cutslopes of a forest road Abstract: The effects of Rubus hyrcanus L. and Philonotis marchica (Hedw.) Bridon on runoff generation and soil loss from cutslopes of forest roads were investigated. The study was conducted at the northern forest of Iran, about 30 km south of the city of Sari. Runoff and sedimentation after each rainfall simulation and chemical and physical soil properties were measured in 14 plots with an area of 0.48 m2. The obtained results indicate that the vegetation dominated by Philonotis marchica exhibited the higher runoff coefficient and soil loss, with averages of 27.25% and 92.40 g.m-2.h-1(gram per square meter per hour), respectively, in comparison to Rubus hyrcanus. For Philonotis marchica (Hedw.) Brid. the sediment concentration increased quickly at the beginning of rainfall simulations and after 10-12 min there was a fast decrease in sediment concentration. The peak of sediment concentration was for the Rubus hyrcanus L. in the 13th-15th min In conclusion, Rubus hyrcanus L. prevented or decreased the risk of runoff and soil loss from cutslopes of forest roads in our study area. Keywords: vegetation type, runoff, soil loss, cutslope, forest road Journal: Journal of Forest Science Pages: 337-344 Volume: 58 Issue: 8 Year: 2012 DOI: 10.17221/9/2012-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/9/2012-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201208-0001.txt Handle: RePEc:caa:jnljfs:v:58:y:2012:i:8:id:9-2012-JFS Template-Type: ReDIF-Article 1.0 Author-Name: E. Stefańska-Krzaczek Author-Workplace-Name: Department of Biodiversity and Plant Cover Protection, Faculty of Biological Sciences, University of Wrocław, Wrocław Title: Species diversity across the successional gradient of managed Scots pine stands in oligotrophic sites (SW Poland) Abstract: The Scots pine communities are common forest types in Central Europe, however, the general model of changes resulting from cyclical management practices is still unclear. The aim of this paper is to present the changes in species diversity during the development of managed Scots pine stands and to distinguish main stages of vegetation succession. The examined stands were divided into six age classes: ≤ 10 years old, 11-20, 21-40, 41-60, 61-80, 81-120 years old. Data from our study suggest a division of the stands into three main stages of succession on oligotrophic (low nutrient) sites. The first stage is associated with the youngest stands before the canopy formation (< 10 years), the second stage with young closed-canopy stands (11-40 years) and the third stage with the maturing, pre-mature and mature stands (> 40 years). The first stage was characterised by the highest value of the Shannon index, the highest number of vascular plant species, the highest cover of lichens but the lowest cover of bryophytes. There was a group of non-forest cryptogams, exclusive for that stage. In the second stage, there was a significant decline in the Shannon index, the cover of bryophytes increased and the cover of lichens decreased. Cladonia species were characteristic of that succession stage. The third stage was characterised by the lowest species richness, moreover, the cover of bryophytes was highest and the cover of lichens was lowest. Common coniferous forest species were characteristic of the final stage before clear-cutting. Generally, after stand removal the communities indicated higher species diversity than previous forest communities. The final forest plant associations were not determined solely by late-successional species.Forest management appeared to substantially influence changes in diversity and the course of succession. Keywords: clear-cutting, vegetation succession, forest management, Leucobryo-Pinetum, undergrowth vegetation Journal: Journal of Forest Science Pages: 345-356 Volume: 58 Issue: 8 Year: 2012 DOI: 10.17221/15/2012-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/15/2012-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201208-0002.txt Handle: RePEc:caa:jnljfs:v:58:y:2012:i:8:id:15-2012-JFS Template-Type: ReDIF-Article 1.0 Author-Name: M. Akbarimehr Author-Workplace-Name: Department of Forestry, Faculty of Natural Resources, University of Guilan, Somehsara, Iran Author-Name: R. Naghdi Author-Workplace-Name: Department of Forestry, Faculty of Natural Resources, University of Guilan, Somehsara, Iran Title: Assessing the relationship of slope and runoff volume on skid trails (Case study: Nav 3 district) Abstract: The effect of slope on runoff volume was evaluated on skid trails in the natural forest in the north of Iran. The objective of this study was to determine the relationship between runoff volume and slope in order to control runoff and skid trail maintenance by using water diversions. Two levels of slope > 20% and < 20% were studied in adjacent parcels in district 3 of Nav in Asalem. Treatment plots with three replications were established on skid trails after skidding and the runoff volume was recorded after duration of 3 rainfalls. The results showed that there was a positive and significant correlation between slope steepness and runoff volume, and between runoff volume and slope length (P < 0.05). Also, regression analysis results showed that there was a linear relation between runoff volume, slope length and slope steepness. Effective recommendations to control and decrease runoff volume are precise scheduling of skid trail designing, construction, maintenance and limiting skid trails to a longitudinal slope of less than 20% and rehabilitation of skid trails by using water diversions. Keywords: bulk density, Nav district, runoff, skid trail, water diversion Journal: Journal of Forest Science Pages: 357-362 Volume: 58 Issue: 8 Year: 2012 DOI: 10.17221/26/2012-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/26/2012-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201208-0003.txt Handle: RePEc:caa:jnljfs:v:58:y:2012:i:8:id:26-2012-JFS Template-Type: ReDIF-Article 1.0 Author-Name: S. Grashey-Jansen Author-Workplace-Name: Institute of Geography, Physical Geography and Quantitative Methods, University of Augsburg, Augsburg, Germany Title: Soil hydrology and soil properties on a partially reforested hillside in the Central Alps Abstract: The landscape on southern exposed hillsides in the inneralpine Vinschgau Valley (Northern Italy) is shaped by many thousand years of cultivation. Phases of intensive land use and deforestation were followed by phases of natural regeneration and later by governmental programs of reforestation. The result in the present landscape is the juxtaposition of reforested woodland (RF-areas) and xeric grassland with steppe species (XG-areas) on the same hillside. The scenic and ecological contrast presents ideal conditions for comparative studies in ecology, forest and soil science. On the side of soil science especially the depth and intensity of soil development on the whole hillside have been underrated, whereas the existence of podzolised soils in the reforested area has mostly been overrated so far. One aim of this study was to investigate differences in the development of soils. A further aim was the comparative investigation of the recent hydrological and physical properties as well as the present dynamics of the hillside soils. With regard to that some results of the field and laboratory studies are presented which are contradictory to results of other studies concerning this region. Keywords: soil hydrology, soil properties, reforestation, water flux, infiltration Journal: Journal of Forest Science Pages: 363-371 Volume: 58 Issue: 8 Year: 2012 DOI: 10.17221/2/2012-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/2/2012-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201208-0004.txt Handle: RePEc:caa:jnljfs:v:58:y:2012:i:8:id:2-2012-JFS Template-Type: ReDIF-Article 1.0 Author-Name: M.R. Ullah Author-Workplace-Name: College of Forestry, Beijing Forestry University, Beijing, P. R. China Author-Name: M. Al-Amin Author-Workplace-Name: Institute of Forestry and Environmental Sciences, University of Chittagong, Chittagong, Bangladesh Title: Above- and below-ground carbon stock estimation in a natural forest of Bangladesh Abstract: The research was aimed to estimate above- and below-ground carbon stock in Tankawati natural hill forest of Bangladesh. A systematic sampling method was used to identify each sampling point through Global Positioning System (GPS). Loss on ignition and wet oxidation method were used to estimate biomass and soil carbon stock, respectively. Results revealed that the total carbon stock of the forest was 283.80 t.ha-1 whereas trees produce 110.94 t.ha-1, undergrowth (shrubs, herbs and grass) 0.50 t.ha-1, litter fall 4.21 t.ha-1 and soil 168.15 t.ha-1 (up to 1m depth). The forest in the study area is a reservoir of carbon, as it has a good capacity to stock carbon from the atmosphere. To realize the forest sector potentiality inBangladesh, the carbon sequestration should be integrated with the Clean Development Mechanism (CDM) carbon trading system of the Kyoto Protocol. Keywords: Tankawati natural hill forest, carbon stock, geo-position Journal: Journal of Forest Science Pages: 372-379 Volume: 58 Issue: 8 Year: 2012 DOI: 10.17221/103/2011-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/103/2011-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201208-0005.txt Handle: RePEc:caa:jnljfs:v:58:y:2012:i:8:id:103-2011-JFS