Kannattavan metsänkäsittelyn menetelmät
– seminaari ja retkeily
13.-14.6.2013 Lahti
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Tree map system in harvester
1. Tree map system in harvester
Fibic –seminar 12.6.2013
Lahti
Timo Melkas, Metsäteho Oy
Mikko Miettinen, Argone Oy
Kalle Einola, Ponsse Oyj
2. www.metsateho.fi
EffFibre –project 2011-2013 (WP3)
Project goals
• To evaluate the accuracy of and usability of data collected with a laser scanner
attached to a harvester in various forest conditions.
• In the early stages of the project, to develop methods and instruments that
enable the measurement of stand density and updating of forest information
• To utilize more accurate stem information in bucking
• To create methods for the semiautomatic control of harvesters
Project timetable
Pre-measurement of pilot sample plots 31.5.2011
Laser scanning of pilot sample plots with a laser scanner attached
to a harvester 8-10.6.2011
Selection of stands and the guidance of field measurers 14-15.6.2011
Field measurements 15.7-11.8.2011
Collecting data no. I at end-September 2011 (summer data), 21-23.9.2011
Collecting data no. II in February-March 2012 (winter data)
Collecting data no. III in May 2012 (spring data)
Fibic seminar 12.6.2013 Timo Melkas & Mikko Miettinen 2
3. www.metsateho.fi
Field measurements performed during
2011-2012(EffFibre, WP3)
61 sample plots, in total, were measured in the regions of
Vilppula and Mänttä, Finland (Metsäliitto)
Hangasniemi
8 sample plots (pilot, 8-10.6.2011)
pine
Kolho
22 sample plots (21-23.9.2011)
pine and mixed sample plots
Kurkisalo
16 sample plots (winter 2012)
spruce sample plots
Viitaniemi 1
5 sample plots (spring 2012)
pine sample plots/ 2 spruce sample plots
Fibic seminar 12.6.2013 Timo Melkas & Mikko Miettinen 3
4. www.metsateho.fi
Data collection at pilot sample plots (EffFibre, WP3)
Field measurements of sample plots (r= 10 m) – measured variables
Tree species, direction and distance from the center of the sample plot to the center of the
tree (at breast height)
Diameter at breast height (d1,3), mm
Upper diameter (d4), mm) - (mature forest)
Upper limit of green crown, dm (mature forest)
Quality variables – stem straightness (length of first 5 meter) and crookedness
Height of dominant trees (dm) and mean heigth by tree species
Photographs (panorama) and videophotos before and after felling
Basal area by tree species before and after felling
Laserdata – locations of trees, diameters, stem curve, quality variables
STM –data from felled stems
Fibic seminar 12.6.2013 Timo Melkas & Mikko Miettinen 4
17. www.metsateho.fi
Johtopäätökset
• Tulokset näyttävät lupaavilta harvennusvoimakkuuden
seurannan ja jäävän puuston mittauksen kannalta.
• Etenkin varttuneissa puustoissa puiden löytyminen hakkuun
jälkeen onnistuu hyvin.
• Läpimitan mittauksen osalta tulokset ovat alustavia ja
menetelmää kehitetään edelleen tavoitteena tarkentaa
läpimitan mittausta hyödyntäen hakkuukoneen keräämää
mittaustietoa poistetusta puustosta.
• Myös laatutunnusten mittausta kehitetään edelleen.
• Lopulliset tulokset valmistuvat syksyllä 2013
Fibic seminar 12.6.2013 Timo Melkas & Mikko Miettinen 17