Search results: 59,571 results (approx.)

2. The predicting models of crown surface area and crown volume for Mongolian pine plantation.

Based on the branch analysis data of 30 sample trees from 6 permanent plots in Mongolian pine (Pinus sylvestris var. mongolica) plantation, the predicting models of crown surface area and crown volume were developed according to power function as base model by analyzing the relationship between...

Author(s) : Liao CaiXia; Li FengRi

Publisher : Science Press, Beijing, China

Journal article : Bulletin of Botanical Research 2007 Vol.27 No.4 pp.478-483 ref.11

3. Stand structure and spatial patterns of trees in mixed Hyrcanian Beech Forest, Iran.

The mixed beach forests (Fagus orientalis[Fagus sylvatica subsp. orientalis]) commonly dominate by shade tolerance species with irregular uneven age stand structure. The aim of this study was to analyse the stand structure and spatial pattern in order to identify specific structural patterns. Data...

Author(s) : Habashi, H.; Hosseiniand, S. M.; Rahmani, R.; Mohammadi, J.

Publisher : ANSInet, Asian Network for Scientific Information, Faisalabad, Pakistan

Journal article : Pakistan Journal of Biological Sciences 2007 Vol.10 No.8 pp.1205-1212 ref.39

4. The impact of forest management on bird communities in Taiwan.

Many forest-management practices have negative impacts on forest birds. Here we compare the bird communities between, first, an old-growth forest and a 30-year-old monoculture conifer plantation, and secondly, an old-growth forest and an old-growth forest that was "improved" silviculturally 9 years ...

Author(s) : Lee ChinKuo; Fang YunJu; Severinghaus, L. L.; Su HungChieh

Publisher : Science Press, Beijing, China

Journal article : Acta Zoologica Sinica 2006 Vol.52 No.Suppl.1 pp.679-683 ref.19

5. Ecological forestry, old growth, and birds in the longleaf pine (Pinus palustris) ecosystem.

Renewed awareness of the longleaf-pine ecosystem and a legal mandate to provide suitable habitat for the endangered red-cockaded woodpecker (Picoides borealis) have generated interest in alternative forms of silviculture in the southeastern United States. Of 110-120 species of birds that occur in...

Author(s) : Engstrom, R. T.; Conner, R. N.

Publisher : Science Press, Beijing, China

Journal article : Acta Zoologica Sinica 2006 Vol.52 No.Suppl.1 pp.697-701 ref.25

6. Terrestriality and tree stratum use in a group of Sichuan snub-nosed monkeys.

Morphological characters allow the Sichuan snub-nosed monkey (Rhinopithecus roxellana) to use multiple tree levels, but very few studies have quantified the terrestriality and tree stratum use of the species. I investigated the terrestriality and tree stratum use in a group of the monkeys from July ...

Author(s) : Li YiMing

Publisher : Springer-Verlag Tokyo, Tokyo, Japan

Journal article : Primates 2007 Vol.48 No.3 pp.197-207 ref.44

7. The radial increment and stemwood element concentrations of Scots pine in the area influenced by the Narva power plants in Northeast Estonia.

In the northeastern part of Estonia, near the town of Narva, there are two large oil shale fuelled power plants, Baltic PP and Estonian PP. On burning oil shale the main atmospheric pollutants are fly ash, sulphur oxides and nitrogen oxides. The radial increment was measured and concentrations of...

Author(s) : Ots, K.; Reisner, V.

Publisher : Springer Science + Business Media, Dordrecht, Netherlands

Journal article : Environmental Monitoring and Assessment 2007 Vol.130 No.1/3 pp.465-474 ref.50

8. Factors influencing storm damage in sample areas of the Tudu and Halliku forest districts.

Changes in tree stand structure were studied in the areas of storm damage in the Tudu and Halliku forest districts in Estonia. Eighteen study plots were established in totally damaged, partly damaged, harvested and undamaged forests. Tree diameter and height were observed to study the tree damage...

Foreign Title :Tormikahjustuse iseloomu mõjutavad tegurid Tudu ja Halliku metskonna katsealadel.

Author(s) : Ilisson, T.; Repo, M.; Jõgiste, K.; Metslaid, M.

Publisher : Estonian Agricultural University, Tartu, Estonia

Journal article : Transactions of the Faculty of Forestry, Estonian Agricultural University 2005 No.No.38 pp.30-37 ref.13

9. A growth model for advance regeneration of Norway spruce after clearcut.

A basal area growth model was developed for modelling the growth of Norway spruce advance regeneration after clearcut. Diameter growth (at ground level) and needle weight characteristics were measured on permanent sample plots in Estonia. Multiple regression was used to estimate basal area growth...

Foreign Title :Hariliku kuuse eeluuenduse kasvumudel lageraie järgselt.

Author(s) : Metslaid, M.; Jõgiste, K.; Ilisson, T.

Publisher : Estonian Agricultural University, Tartu, Estonia

Journal article : Transactions of the Faculty of Forestry, Estonian Agricultural University 2005 No.No.38 pp.46-52 ref.11

10. Environmental supervision and violations of forestry regulations in Võru County in 2003.

Environmental supervision has a role in monitoring forest management and utilization on the property level regardless of the ownership status of a property. The most common violations of forestry regulations in Võru County in 2003 were illegal loggings. Contrary to the public opinion, illegal...

Foreign Title :Keskkonnajärelevalve ja metsaõigusnormide rikkumine Võrumaal 2003. a.

Author(s) : Volkov, A.; Korjus, H.

Publisher : Estonian Agricultural University, Tartu, Estonia

Journal article : Transactions of the Faculty of Forestry, Estonian Agricultural University 2005 No.No.38 pp.72-77 ref.2

11. Production capacity evaluation of the citrus tree by the optical method.

In order to evaluate citrus tree productivity by remote sensing, a nondestructive method that estimated the leaf area index per tree crown area (LAItca) using a plant canopy analyzer (PCA: LAI-2000, LI-COR, Inc.) was examined. The measurement by the PCA was carried out in 2003 and 2004 on 7 kinds...

Author(s) : Iwaya, K.; Yamamoto, H.; Morinaga, K.

Publisher : Verlag Ferdinand Berger & Söhne, Horn, Austria

Journal article : Phyton (Horn) 2005 Vol.45 No.4 pp.481-485 ref.8

12. 3-D measurement of trees using a portable scanning Lidar.

Remote sensing is an effective technique for assessing effects of air pollution and global change on forests. Thus, several types of remote sensing, such as Landsat TM and helicopter-borne scanning Lidar have been applied for this purpose. While these techniques were proven to be effective, ground...

Author(s) : Hosoi, F.; Yoshimi, K.; Shimizu, Y.; Omasa, K.

Publisher : Verlag Ferdinand Berger & Söhne, Horn, Austria

Journal article : Phyton (Horn) 2005 Vol.45 No.4 pp.497-500 ref.8

13. Detection of tree apexes from helicopter-borne scanning lidar data using local maximum filtering.

To examine different methodologies in the estimation of carbon stocks in forest, many studies were conducted in the past using remotely sensed imagery. One of which, reported estimation from a digital canopy height model (DCHM) image obtained from a helicopter-borne scanning lidar system using a...

Author(s) : Matsugami, H.; Shimizu, Y.; Omasa, K.

Publisher : Verlag Ferdinand Berger & Söhne, Horn, Austria

Journal article : Phyton (Horn) 2005 Vol.45 No.4 pp.501-504 ref.5

14. Development of measurement system for evaluating forest ecosystems: measurement method of aboveground biomass growth by using airborne laser survey.

In order to develop a monitoring system for evaluating forest ecosystems, a method of forest stand measurement using airborne laser survey was examined. The study area was a Larix leptolepis[Larix kaempferi] forest in the Tomakomai Flux Research Site. The laser survey data were taken in the year...

Author(s) : Yone, Y.; Oguma, H.; Yamagata, Y.; Fujinuma, Y.

Publisher : Verlag Ferdinand Berger & Söhne, Horn, Austria

Journal article : Phyton (Horn) 2005 Vol.45 No.4 pp.517-524 ref.11

15. Techniques of thinning and pruning in plantations of Pinus ellottii.

Based on the investigation and experimental trials for thinning and pruning on same site, planting densities and stand age, the first time for thinning and pruning of Pinus ellottii plantation was at 7-8 years old. While standard degree of closing of the plantation reached 0.85, current annual...

Author(s) : Shao JinFeng; Wei BaiSong

Publisher : Nanjing Forestry University, Nanjing, China

Journal article : Journal of Nanjing Forestry University (Natural Sciences Edition) 2005 Vol.29 No.5 pp.69-72 ref.7

16. Age-dependent tree-ring growth responses to climate in Larix decidua and Pinus cembra.

Dendrochronology generally operates under the assumption that climate-growth relationships are age independent, once growth trends and/or disturbance pulses have been accounted for. However, several studies have demonstrated that tree physiology undergoes changes with age. This may cause...

Author(s) : Carrer, M.; Urbinati, C.

Publisher : Ecological Society of America, Washington, USA

Journal article : Ecology 2004 Vol.85 No.3 pp.730-740 ref.many

17. Challenges and perspectives of the public administration of the forest resources of Mexico.

The strategic plan for sustainable forestry development in Mexico - Plan Estratégico Forestal (PEF) 2000-2025 - is outlined and discussed in the light of earlier legislation and fiscal reform in the country, and trade in the forest sector, which is briefly compared with that in other countries...

Foreign Title :Retos y perspectivas de la administración pública de los recursos forestales de México.

Author(s) : Veruette Fuentes, J.

Publisher : Editorial Committee of Forestal XXI, Mexico City, Mexico

Journal article : Forestal XXI 2004 Vol.7 No.4 pp.45-48

18. Reduced cottonwood recruitment following extirpation of wolves in Yellowstone's northern range.

Cottonwoods (Populus spp.) represent an important tree component of riparian plant communities within the winter range of the northern Yellowstone elk (Cervus elaphus) herd, yet young cottonwoods are highly palatable to ungulates. To assess potential herbivory impacts associated with wild ungulates ...

Author(s) : Beschta, R. L.

Publisher : Ecological Society of America, Washington, USA

Journal article : Ecology 2005 Vol.86 No.2 pp.391-403 ref.many

19. Genetic variations of growth traits selection among provenances of Fokienia hodginsii at juvenile stage.

The provenance tests on 11 provenances of Fokienia hodginsii selected from provinces of Fujian, Hunan, Jiangxi, Guizhou, Guangdong and Zhejiang were carried out at Nanjing and Sanming, Fujian. The genetic variations of F. hodginsii were studied based on the investigation of 5-year-old provenance...

Author(s) : Zheng RenHua

Publisher : Nanjing Forestry University, Nanjing, China

Journal article : Journal of Nanjing Forestry University (Natural Sciences Edition) 2005 Vol.29 No.5 pp.8-12 ref.15

20. DBH growth model for Pinus densiflora and Quercus variabilis mixed forests in central Korea.

This study presents an individual tree diameter at breast height (dbh) growth model for mixed Pinus densiflora (Red pine) and Quercus variabilis (Oak) uneven-aged stands in central region of Korean peninsula. The different model components, including the effects of tree age, tree size, competition...

Author(s) : Lee WooKyun; Gadow, K. von; Chung DongJun; Lee JongLak; Shin ManYong

Publisher : Elsevier Science B.V., Amsterdam, Netherlands

Journal article : Ecological Modelling 2004 Vol.176 No.1/2 pp.187-200

21. The quantitative measurements of Coarse Woody Debris in Lahemaa and Karula National Parks in Estonia.

The aim of the present study was to examine the quantitative and qualitative status of dead wood in two Estonian national parks (Lahemaa and Karula). The volume, size and decay stage of Coarse Woody Debris (CWD) in forests of different kinds of forestry background and forest site type variability...

Author(s) : Köster, K.; Seedre, M.; Jõgiste, K.; Tukia, H.

Publisher : Estonian Agricultural University, Tartu, Estonia

Journal article : Transactions of the Faculty of Forestry, Estonian Agricultural University 2003 No.No.36 pp.55-70 ref.27

22. Estonian forestry sector macro model - the architecture and the main components.

The objective of the present paper is to create a forestry sector scenario model for the Estonian forestry sector that would combine the essential macroeconomic indicators of the aforesaid branch of economy (GDP, employment, investments, etc) and the indicators identifying sustainable forestry. As...

Foreign Title :Eesti metsasektori makrotaseme mudel - arhitektuur ja põhikomponendid.

Author(s) : Hepner, H.; Kosenkranius, E.

Publisher : Estonian Agricultural University, Tartu, Estonia

Journal article : Transactions of the Faculty of Forestry, Estonian Agricultural University 2003 No.No.36 pp.116-124 ref.17

23. Mapping the location of forest cuttings using Landsat 5 TM and Landsat 7 ETM+ imagery.

Two relatively calibrated multitemporal Landsat TM and ETM+ scenes were used for detecting forest cuttings over a large portion of Estonia. All pixels within the forest mask were assigned change magnitudes according to the fuzzy function and the error estimation of the assignment was carried out by ...

Foreign Title :Raiete kaardistamine kosmosepiltidelt.

Author(s) : Uiga, R.; Lang, M.; Lükk, T.; Anniste, J.

Publisher : Estonian Agricultural University, Tartu, Estonia

Journal article : Transactions of the Faculty of Forestry, Estonian Agricultural University 2003 No.No.36 pp.142-161 ref.19

24. Järvselja forests in 2012.

As part of the Green Forest Management plan a prediction for 2012 of the forest description records of the Järvselja Training and Experimental Forest District was made. The planned management activities were taken into account. A simulation model was compiled using forest growth and regeneration...

Foreign Title :Järvselja metsad aastal 2012.

Author(s) : Lang, M.

Publisher : Estonian Agricultural University, Tartu, Estonia

Journal article : Transactions of the Faculty of Forestry, Estonian Agricultural University 2003 No.No.36 pp.162-175 ref.17

25. Pine wood density on drained swamp and transitional bog site types.

The aim of this research was to investigate variations on pine wood density on different forest site types. The relations between wood density, annual ring width and late wood percentage were studied. From three different stands, 18 model trees were felled. Samples were cut at breast height, half...

Foreign Title :Männipuidu tihedus kuivendatud kõdu- ja siirdesoo kasvukohatüübis.

Author(s) : Kuusepuu, T.

Publisher : Estonian Agricultural University, Tartu, Estonia

Journal article : Transactions of the Faculty of Forestry, Estonian Agricultural University 2003 No.No.36 pp.183-191 ref.10


Age-dependent tree-ring growth responses to climate in Larix decidua and Pinus cembra. Dendrochronology generally operates under the assumption that climate-growth relationships are age independent, once growth trends and/or disturbance pulses have been accounted for. However, several studies have demonstrated that tree physiology undergoes changes with age. This may cause...

Author(s) : Carrer, M.; Urbinati, C.

Publisher : Ecological Society of America, Washington, USA

Journal article : Ecology 2004 Vol.85 No.3 pp.730-740 ref.many

17. Challenges and perspectives of the public administration of the forest resources of Mexico.

The strategic plan for sustainable forestry development in Mexico - Plan Estratégico Forestal (PEF) 2000-2025 - is outlined and discussed in the light of earlier legislation and fiscal reform in the country, and trade in the forest sector, which is briefly compared with that in other countries...

Foreign Title :Retos y perspectivas de la administración pública de los recursos forestales de México.

Author(s) : Veruette Fuentes, J.

Publisher : Editorial Committee of Forestal XXI, Mexico City, Mexico

Journal article : Forestal XXI 2004 Vol.7 No.4 pp.45-48

18. Reduced cottonwood recruitment following extirpation of wolves in Yellowstone's northern range.

Cottonwoods (Populus spp.) represent an important tree component of riparian plant communities within the winter range of the northern Yellowstone elk (Cervus elaphus) herd, yet young cottonwoods are highly palatable to ungulates. To assess potential herbivory impacts associated with wild ungulates ...

Author(s) : Beschta, R. L.

Publisher : Ecological Society of America, Washington, USA

Journal article : Ecology 2005 Vol.86 No.2 pp.391-403 ref.many

19. Genetic variations of growth traits selection among provenances of Fokienia hodginsii at juvenile stage.

The provenance tests on 11 provenances of Fokienia hodginsii selected from provinces of Fujian, Hunan, Jiangxi, Guizhou, Guangdong and Zhejiang were carried out at Nanjing and Sanming, Fujian. The genetic variations of F. hodginsii were studied based on the investigation of 5-year-old provenance...

Author(s) : Zheng RenHua

Publisher : Nanjing Forestry University, Nanjing, China

Journal article : Journal of Nanjing Forestry University (Natural Sciences Edition) 2005 Vol.29 No.5 pp.8-12 ref.15

20. DBH growth model for Pinus densiflora and Quercus variabilis mixed forests in central Korea.

This study presents an individual tree diameter at breast height (dbh) growth model for mixed Pinus densiflora (Red pine) and Quercus variabilis (Oak) uneven-aged stands in central region of Korean peninsula. The different model components, including the effects of tree age, tree size, competition...

Author(s) : Lee WooKyun; Gadow, K. von; Chung DongJun; Lee JongLak; Shin ManYong

Publisher : Elsevier Science B.V., Amsterdam, Netherlands

Journal article : Ecological Modelling 2004 Vol.176 No.1/2 pp.187-200

21. The quantitative measurements of Coarse Woody Debris in Lahemaa and Karula National Parks in Estonia.

The aim of the present study was to examine the quantitative and qualitative status of dead wood in two Estonian national parks (Lahemaa and Karula). The volume, size and decay stage of Coarse Woody Debris (CWD) in forests of different kinds of forestry background and forest site type variability...

Author(s) : Köster, K.; Seedre, M.; Jõgiste, K.; Tukia, H.

Publisher : Estonian Agricultural University, Tartu, Estonia

Journal article : Transactions of the Faculty of Forestry, Estonian Agricultural University 2003 No.No.36 pp.55-70 ref.27

22. Estonian forestry sector macro model - the architecture and the main components.

The objective of the present paper is to create a forestry sector scenario model for the Estonian forestry sector that would combine the essential macroeconomic indicators of the aforesaid branch of economy (GDP, employment, investments, etc) and the indicators identifying sustainable forestry. As...

Foreign Title :Eesti metsasektori makrotaseme mudel - arhitektuur ja põhikomponendid.

Author(s) : Hepner, H.; Kosenkranius, E.

Publisher : Estonian Agricultural University, Tartu, Estonia

Journal article : Transactions of the Faculty of Forestry, Estonian Agricultural University 2003 No.No.36 pp.116-124 ref.17

23. Mapping the location of forest cuttings using Landsat 5 TM and Landsat 7 ETM+ imagery.

Two relatively calibrated multitemporal Landsat TM and ETM+ scenes were used for detecting forest cuttings over a large portion of Estonia. All pixels within the forest mask were assigned change magnitudes according to the fuzzy function and the error estimation of the assignment was carried out by ...

Foreign Title :Raiete kaardistamine kosmosepiltidelt.

Author(s) : Uiga, R.; Lang, M.; Lükk, T.; Anniste, J.

Publisher : Estonian Agricultural University, Tartu, Estonia

Journal article : Transactions of the Faculty of Forestry, Estonian Agricultural University 2003 No.No.36 pp.142-161 ref.19

24. Järvselja forests in 2012.

As part of the Green Forest Management plan a prediction for 2012 of the forest description records of the Järvselja Training and Experimental Forest District was made. The planned management activities were taken into account. A simulation model was compiled using forest growth and regeneration...

Foreign Title :Järvselja metsad aastal 2012.

Author(s) : Lang, M.

Publisher : Estonian Agricultural University, Tartu, Estonia

Journal article : Transactions of the Faculty of Forestry, Estonian Agricultural University 2003 No.No.36 pp.162-175 ref.17

25. Pine wood density on drained swamp and transitional bog site types.

The aim of this research was to investigate variations on pine wood density on different forest site types. The relations between wood density, annual ring width and late wood percentage were studied. From three different stands, 18 model trees were felled. Samples were cut at breast height, half...

Foreign Title :Männipuidu tihedus kuivendatud kõdu- ja siirdesoo kasvukohatüübis.

Author(s) : Kuusepuu, T.

Publisher : Estonian Agricultural University, Tartu, Estonia

Journal article : Transactions of the Faculty of Forestry, Estonian Agricultural University 2003 No.No.36 pp.183-191 ref.10