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Pregled bibliografske jedinice broj: 970642

Terrain Classification for Timber Harvesting and Forest Accessibility


Janeš, David; Poršinsky, Tomislav; Pentek, Tibor; Tomašić, Željko; Papa, Ivica; Đuka, Andreja
Terrain Classification for Timber Harvesting and Forest Accessibility // FORMEC 2018–Improved Forest Mechanisation: mobilizing natural resources and preventing wildfires, September 25th-27th, 2018, Madrid, Spain / Tolosana, Eduardo (ur.).
Madrid: Fundación Conde del Valle de Salazar, 2018. str. 178-180 (predavanje, međunarodna recenzija, sažetak, ostalo)


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Naslov
Terrain Classification for Timber Harvesting and Forest Accessibility

Autori
Janeš, David ; Poršinsky, Tomislav ; Pentek, Tibor ; Tomašić, Željko ; Papa, Ivica ; Đuka, Andreja

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, ostalo

Izvornik
FORMEC 2018–Improved Forest Mechanisation: mobilizing natural resources and preventing wildfires, September 25th-27th, 2018, Madrid, Spain / Tolosana, Eduardo - Madrid : Fundación Conde del Valle de Salazar, 2018, 178-180

ISBN
978-606-19-0904-9

Skup
FORMEC 2018–Improved Forest Mechanisation: mobilizing natural resources and preventing wildfires

Mjesto i datum
Madrid, Španjolska, 25-27.9.2018

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
terrain trafficabilty, bioclimates, planning, GIS

Sažetak
Different terrain conditions influence the type of machines and harvesting systems as well as designing and construction of forest roads. Vehicle mobility is the ability of a vehicle to move in terrain while performing its primary mission, while terrain trafficability is its property to allow the passage of a vehicle, where terrain conditions show their influence. From the standpoint of planning harvesting operations and forest accessibility on a strategic level, terrain slope is the most critical field parameter that directly affects the selection of the harvesting system. This paper deals with terrain classification for forestry operations in the Republic of Croatia which expands across three central European biogeographical regions – Continental, Alpine and Mediterranean – and therefore has a very high level of forest diversity comprised of 11 out of 14 European forest types. Terrain classification was based on ten forest bioclimates where each was analysed regarding 1) slope classes, 2) soil erosion risk classes, 3) soil moisture regimes 4) terrain ruggedness index (TRI) and 5) ground obstacles – stoniness. The research was based on commercial state and private forests on totally 1, 989, 647 ha. Bioclimates were as follows: 1. Subalpine dwarf pine forests 2. Subalpine spruce and beech forests 3. Mountainous fir, beech-fir and spruce forests 4. Sub-mountainous beech forests 5. Sessile oak forests of hilly terrain 6. Common oak and floodplain forests 7. Sub-Mediterranean mountainous beech and black pine forests 8. Sub-Mediterranean pubescent oak forests with hop-hornbeam 9. Sub-Mediterranean pubescent oak forests with oriental hornbeam 10. Mediterranean Aleppo pine and holm oak forests and maquis Analysis showed various conditions in each bioclimate. The most commercial species in national forestry, such as common and sessile oak, beech and fir were accumulated in five bioclimates (2–5) and had specific terrain conditions. Subalpine spruce and beech forests cover 34, 232 ha of the researched area. Soil moisture regime is entirely automorphic, and 56.06% of bioclimate is on intermediately rugged terrain. 72.60% of bioclimate has 51–90% stoniness coverage on the surface and 60.91% of forests are on terrain slopes above 34%, while 27.13% of forests are on slopes above 51%. On 78.21% of the surface, there is a moderate risk of erosion. Mountainous fir, beech-fir and spruce forests cover 185, 762 ha of the researched area. Soil moisture regime is on 99.88% of the surface automorphic, and the most of the growing stock is on slightly and intermediately rugged terrain. The share of stoniness per surface is high whereas 56.82% of these forests contain 51–90% of ground obstacles. At 67.75% of the surface, terrain slope is above 21%, while the most growing stock (26.30% of area) can be found on terrain slopes between 34 and 50%. Sub-mountainous beech forests cover 331, 099 ha of researched area. Soil moisture regime is on 94.54% of the surface automorphic, and the highest share of the growing stock (101–400m3/ha) is spread on a level, nearly level and slightly rugged terrain. Terrain ruggedness index showed slight changes regarding previously mentioned bioclimates and this change continues in term of ground obstacles. At 62.39% of the bioclimate share of stones on the surface is below 2%, however at 16.99% of forests stoniness is between 51-90%. Three slope classes prevail in these forests 1) terrain slopes between 11 and 20% at 75, 891 ha of bioclimate, 2) terrain slopes between 21 and 33% at 100, 874 ha of bioclimate and 3) terrain slopes between 34 and 50% at 79, 822 ha of bioclimate. At 41.08% of forests risk of erosion is low, while at 54.29% the risk is moderate. Sessile oak forests of hilly terrain cover 311, 679 ha of researched area. Soil moisture regime is at 77.50% of the surface automorphic while at 22.07% of the area pseudogley soil types were found. Terrain ruggedness index shows that 71.63% of bioclimate is on level terrain and 74.58% of these forests contain up to 2% coverage of stones on the surface. Terrain slope ranges from 11–20% at 33.05% of the area and from 21–33% at 29.29% of forests, while 64, 448 ha contain slopes above 34%. At 53.73% of the surface, soil erosion risk is low, but 39.82% show moderate erosion risk. Common oak and floodplain forests cover 288, 310 ha of researched area. The soil is highly influenced by the surface, underground and rainfall water and at 27.15% of surface amphigley soils can be found, at 26.70% of surface contain pseudogley soil, while alluvial, epigleic, hypogleic and semigleic soil can be found at 29.61% of the surface. Analysis showed that 99.54% of the surface TRI is level without ground obstacles (99.54% of forests contain up to 2% share of stoniness). Terrain slope is at 92.84% of the area up to 10%, and at 97.83% there is a low risk of soil erosion. Digital terrain model based on the input data will enhance planning of timber harvesting, forest accessibility (forest road route layouts) and stress the environmental aspect of given procedures in the highlight of terrain diversity, various stand conditions and different ways of forest management. The analysis was done on a national level, including almost 2 million hectares of state and private forests, of which 91.4% are commercial forests.

Izvorni jezik
Engleski

Znanstvena područja
Šumarstvo



POVEZANOST RADA


Ustanove:
Šumarski fakultet, Zagreb

Citiraj ovu publikaciju

Janeš, David; Poršinsky, Tomislav; Pentek, Tibor; Tomašić, Željko; Papa, Ivica; Đuka, Andreja
Terrain Classification for Timber Harvesting and Forest Accessibility // FORMEC 2018–Improved Forest Mechanisation: mobilizing natural resources and preventing wildfires, September 25th-27th, 2018, Madrid, Spain / Tolosana, Eduardo (ur.).
Madrid: Fundación Conde del Valle de Salazar, 2018. str. 178-180 (predavanje, međunarodna recenzija, sažetak, ostalo)
Janeš, D., Poršinsky, T., Pentek, T., Tomašić, Ž., Papa, I. & Đuka, A. (2018) Terrain Classification for Timber Harvesting and Forest Accessibility. U: Tolosana, E. (ur.)FORMEC 2018–Improved Forest Mechanisation: mobilizing natural resources and preventing wildfires, September 25th-27th, 2018, Madrid, Spain.
@article{article, editor = {Tolosana, E.}, year = {2018}, pages = {178-180}, keywords = {terrain trafficabilty, bioclimates, planning, GIS}, isbn = {978-606-19-0904-9}, title = {Terrain Classification for Timber Harvesting and Forest Accessibility}, keyword = {terrain trafficabilty, bioclimates, planning, GIS}, publisher = {Fundaci\'{o}n Conde del Valle de Salazar}, publisherplace = {Madrid, \v{S}panjolska} }




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