broj: 13/2011
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| RIJEČ UREDNIŠTVA | ||
| Boris Vrbek | ||
| INTERNATIONAL YEAR OF FORESTS IN THE LIGHT OF THE 50th ANNIVERSARY OF CLOSE COLLABORATION BETWEEN THE CROATIAN FORESTRY SCIENCE AND PROFESSION pdf HR EN | 5000 | |
| IZVORNI ZNANSTVENI ČLANCI | ||
| Medak, Jasnica | UDK 630* 188 (001) | |
| Forests of Sweet Chestnut with Odorous Pig-Salad (Aposeri foetidae-Castanetum SativaeAss. nova) in Croatia pdf HR EN | 5005 | |
| Ivanković,M., M. Popović, I. Katičić, G. von Wuehlisch, S. Bogdan | UDK 630* 165 (001) | |
| Quantitative Genetic Variation of European Beech (Fagus sylvatica L.) Provenances from the Southeastern Europe pdf HR EN | 5025 | |
| Littvay, Tibor | UDK 630* 165 (001) | |
| Phenotypic Stability andAdaptability of Families of Common Walnut (Juglans regia L.) in Progeny Tests pdf HR EN | 5038 | |
| Ivanković,M., M. Popović, S. Bogdan | UDK 630* 232.3 (001) | |
| Acorn Morphometric Traits and Seedling Heights Variation of Pedunculate Oak (Quercus robur L.) from the Seed Stands in Croatia pdf HR EN | 5046 | |
| Marjanović,H., M. Z. Ostrogović, G. Alberti, I. Balenović, E. Paladinić, K. Indir, A. Peressotti, D. Vuletić | UDK 630* 120 + 114.2 (001) | |
| Carbon Dynamics in younger Stands of Pedunculate Oak during two Vegetation Periods pdf HR EN | 5059 | |
| Dubravac,T., S. Dekanić,V. Roth | UDK 630* 425 + 531 (001) | |
| Damage Dynamics and Structure of the Pedunculate Oak Tree Crowns in Stands in Microelevations and Microdepressions – Results from the Monitoring on Permanent Experimental Plots pdf HR EN | 5074 | |
| Seletković,I., N. Potočić,V. Topić, L. Butorac, G. Jelić,A. Jazbec | UDK 630* 232.3 Pinus nigra Arn. (001) | |
| Influence of Various Container Types and Slow-release Fertilizer Doses on Growth and Physiological Parameters of Black Pine (Pinus nigra Arn.) Seedlings pdf HR EN | 5090 | |
| Krpan, A. P.B., Ž. Tomašić, P. Bašić Palković | UDK 630* 537 + 562 (001) | |
| Biopotential of Indigobusch (Amorpha fruticosa L.) – Second Year of Investigation pdf HR EN | 5103 | |
| Pernek,M., N. Lacković | UDK 630* 453 (001) | |
| The Role of Bark Beetles in Silver Fir Decline and Possible Use of Pheromone Traps for the Monitoring pdf HR EN | 5114 | |
| Liović, Boris | UDK 630* 443 (001) | |
| The Influence of Powdery Mildew (Microsphaera alphitoides Griff. et Maubl.) on Growth and Survival Rate of Oak Seedlings pdf HR EN | 5122 | |
| Pernek,M., M. Županić, D. Diminić,T. Cech | UDK 630* 443 (001) | |
| Phytophthora Species on Beech and Poplars in Croatia pdf HR EN | 5130 | |
| PRETHODNO PRIOPĆENJE | ||
| Pilaš,I., Š.Planinšek | UDK 630* 116 + 114 | |
| The Reconstruction of the Water Regime in Lowland Forests in Support of Sustainable Management pdf HR EN | 5138 | |
| Potočić,N., I. Seletković | UDK 630* 533 + 425 | |
| Defoliation of Forest Trees in Croatia in the period 2006 – 2009 pdf HR EN | 5149 | |
| Roth,V., S. Dekanić,T. Dubravac | UDK 630* 232.3 (Quercus robur L.) | |
| Effect of Acorn Size on Morphological Development of One-year-old Seedlings of Pedunculate Oak (Quercus robur L.) in Differing Light Conditions pdf HR EN | 5159 | |
| Gradečki-Poštenjak, M., S. Novak Agbaba, R. Licht, D. Posarić | UDK 630* 232.3 | |
| Dynamics ofAcorn Production and Quality of English OakAcorn (Quercus robur L.) in Disrupted Ecological Conditions pdf HR EN | 5169 | |
| Topić,V., L. Butorac, G. Jelić | UDK 630* 539 (Arbutus unedo L.) | |
| Wood and Foliage Mass in Strawberry Tree (Arbutus unedo L.) Maquis on theArea of Vrgorac pdf HR EN | 5182 | |
| Perić,S., M. Tijardović, A. Jazbec | UDK 630* 232:233 + 120 | |
| Results of Research on Douglas Fir Provenances in Ecologicaly Different Continenetal Parts of Croatia pdf HR EN | 5190 | |
| Novak Agbaba,S., N. Ćelepirović, M. Ćurković Perica | UDK 630* 442 | |
| Protection of Sweet Chestnut Stands pdf HR EN | 5202 | |
| Indir,K., V. Novotny | UDK 630* 55 : 565 | |
| Circular Sample Plot Size Impact on Structure Elements Estimation in Selected Pedunculate Oak Stands pdf HR EN | 5211 | |
| Summary: Data collecting in forest inventory in Croatia are carried out on a temporary sample plots (circles or strips). In this article, sample of 86 circular plots established in Repaš-Gabajeva Greda management unit (Fig. 1), Repaš forest office, Koprivnica regional forest office, is used to see how the basic structural elements (stem number – N, basal area – G and stand volume –V) are changing when the sample plot radius is decreasing. Research area is typical lowland pedunculate oak and hornbeam stand (Carpino betuli-Quercetum roboris (Anić 1959) Rauš 1969. Sample plots covered the whole management unit area and stands older than 40 years, from 3rd to 7th age class. Sample units were circular, with radius 15 to 30 m, bigger than in regular forest inventory (Table 1) which are usually 12,62 m and 18 m in radius. All trees above 10 cm in dbh within circular plot were measured. Plot center was marked with iron bolt below ground level. Position of each tree is determined with distance and angle from plot center. Haglof caliper was used to measure two dbh of each tree. Total tree height was taken with Suunto hypsometer. Data collected in a field, were entered to database created in Microsoft Access. For each plot, number of trees per hectare, basal area per hectare, and volume per hectare, were calculated, separately for tree species and total. These basic structure elements were calculated for different plot sizes, lower than taken in field. It has been done using database queries, thanks to recorded position of each tree. For a particular criteria (distance from plot center), only trees that are within required radius were selected. In 3rd and 4thage class, plot radius from 5 to 15 m, with 1 m step, is used to calculate structure elements (Table 2). In 5thage class, examined plot radius range was 15–25 m, and in 6thand 7thage class 20–30 m (Table 3). Calculated elements were examined with simple statistical analyses in order to get variation coefficient (CV), and precision (SP). The results showed that in 3rd, 4thand 7thage class there is not enough sample plots to bring conclusions because variation coefficient values are high and precision is at poor level. (Fig. 3–8). In 5th and 6th age class for all examined plot radii, estimated precision of basal area and stand volume is better than 5 % (Fig.7, Fig.8), and variation coefficient is in range of 15,3–26,4 % (Fig. 4, Fig. 5). Stem number estimation shows precision of 5,3–6,0 % (Fig. 6). In given research area and stand conditions, conclusions are: – in 3rd, 4thand 7thage class variability in small amount of sample plots is too high to bring resolute conclusion – regarding to variation coefficient and estimation precision values, there is no need to use sample plot radius greater than 15 m in 5thage class, and 20 m in 6thage class - with more sample plots in 3rd, 4thand 7thage class, and use of lower sample plot sizes in 5thand 6thage class, optimal plot radius that gives reliable and precise stand structure elements estimation could be reached. Key words: Pedunculate oak; sample plots; stand structure elements; estimation precision | ||
| Vuletić, D., S. Krajter, O. Vlainić | UDK 630* 907 + 907.2 | |
| Review of Local Residents and UsersAttitudes Towards Nonwood Forest Products and Services with Remarks on Obstacles and Possibilities for Improvement pdf HR EN | 5222 | |
| STRUČNI ČLANCI | ||
| Vrbek, B., I. Pilaš | UDK 630* 114.4 + 232.4 | |
| Researches of Soil Changes in the Pinus and Robinia Forest on Đurđevački SandsArea pdf HR EN | 5230 | |
| Seletković,I., N. Potočić, M. Šango | UDK 630* 232.3 (Fagus sylvatica,Quercus robur) | |
| Useability of Hungavit, a Preparation for FoliarApplication, for Enhancement of Quality of Common Beech (Fagus sylvatica L.) and Pedunculate Oak (Quercus robur L.) Seedlings in Nursery Production pdf HR EN | 5239 | |
| Paladinić,E., D. Štimac, H. Marjanović, I. Balenović, M. Z. Ostrogović | UDK 630* 49 : 562 (Abies alba Mill.) | |
| ProductionAspect of Silver Fir (Abies alba Mill.) Dieback on Example of a few Beech-fir Stands pdf HR EN | 5248 | |
| Matošević,D., M. Pernek | UDK 630* 453 | |
| Alien and Invasive Insects in Croatian Forest Ecosystems and Estimate of their Damage pdf HR EN | 5264 | |
| Benko,M., I. Balenović | UDK 630* 587 | |
| Past, Present and Future of Application of Remote Sensing Methods in Croatian Forest Inventory pdf HR EN | 5272 | |
| Novotny,V., I. Balenović, N. Medenjak, D. Štorga, D. Pošta | UDK 630* 569 | |
| Research on Structure of older and old Common Beech Stands in Management Unit “Đurđevačka Bilogora” pdf HR EN | 5282 | |