Precision Management of Selection Forests Using Innovative Surveying Technologies in Hokkaido, Japan<br />Dr. Toshiaki Owa...
Precision Forestry …<br />… refers to “planning and conducting site-specific forest management activities and operations t...
Precision Forestry andReduced Impact Logging<br />Precision forestry may be a useful concept for the implementation of red...
Precision Forestry in Hokkaido, Japan<br />In recent years, precision forestry has successfully been introduced to selecti...
Purpose<br />To present practical applications of innovative surveying technologies to the precision management of selecti...
2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />The Univ. of Tokyo Hokkaido Forest<br />Located in Furano, Hokkaido<...
2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />7<br />
2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />8<br />
2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />9<br />
2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />10<br />
Using Laser-based Survey System for Stand Classification<br />2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />11<br />
Stand Classification<br />… serves as the basis for spatial management planning on where to be cut (Owariet al., 2007)<br ...
Ground Survey for Stand Classification<br />The ground survey was formerly conducted using a pocket compass with a measuri...
Laser-based Survey System<br />TruPulse 200 with Mapstar compass module (Laser Technology, Inc., CO, USA)<br />Archer Fiel...
Stand Classification Map<br />Example: sub-comp. 66A<br />Area: 106.27 ha, of which 29.23 ha were classified as selection ...
2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />16<br />Tree & Stump Locations<br />Permanent Plot No. 5137<br />
Stand Visualization using Forest Window<br />2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />17<br />Before Harvest<...
Using GPS for Tree Marking<br />2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />18<br />
Tree Marking<br />… is an essential technique in single-tree selection system (Owariet al., 2010)<br />… involves the care...
Record of Marked Tree Locations<br />Previously, the tree marker wrote down tracks and approximate positions of marked tre...
Positional Data Collection by GPS<br />GPS receiver<br />GPSMAP 60CSx (Garmin Ltd.)<br />Small, handy, and easy to use<br ...
2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />22<br />Mapping of Marked Trees<br />During April - May 2008 (defoli...
Intersection with Selection Forests<br />2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />23<br />Using the “select b...
Harvest Intensity<br />2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />24<br />Spatial distribution of harvest inten...
Summary<br />Using laser-based survey system for stand mapping, we can …<br />… accurately identify the area for selection...
Concluding Remarks<br />Innovative surveying technologies such as laser-based survey system and GPS may be useful tools fo...
Thank you!<br />This paper was partly supported by the Japan Society for the Promotion of Science, Grant-in-Aid for Young ...
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Precision management of selection forests using innovative surveying technologies in Hokkaido, Japan

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International Conference on Managing Forest Resources for Multiple Ecosystem Services under Robust and Fragile Environments, Phnom Penh, Cambodia, 10 Aug. 2010

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Precision management of selection forests using innovative surveying technologies in Hokkaido, Japan

  1. 1. Precision Management of Selection Forests Using Innovative Surveying Technologies in Hokkaido, Japan<br />Dr. Toshiaki Owari<br />Assistant Director and Lecturer<br />Hokkaido Forest, The University of Tokyo, Japan<br />
  2. 2. Precision Forestry …<br />… refers to “planning and conducting site-specific forest management activities and operations to improve wood product quality and utilization, reduce waste, increase profits, and maintain the quality of the environment” (Taylor et al., 2002)<br />The concept emerged in late 1990’s in Washington State, USA<br />… uses geospatial information and technologies (GPS, GIS, etc.) to assist forest management planning and to improve operational efficiency (Taylor et al., 2002)<br />2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />2<br />
  3. 3. Precision Forestry andReduced Impact Logging<br />Precision forestry may be a useful concept for the implementation of reduced impact logging (RIL), because it requires detailed inventories in which the trees to be harvested are mapped, marked and measured (Putzet al., 2008)<br />Selection logging using RIL techniques will increase forest retention of carbon compared to conventional logging (Putzet al., 2008)<br />Under the REDD-plus mechanism, all signatory countries will be required to adopt a sound logging system such as RIL (Sasaki and Yoshimoto, 2010)<br />2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />3<br />
  4. 4. Precision Forestry in Hokkaido, Japan<br />In recent years, precision forestry has successfully been introduced to selection logging at the University of Tokyo Forest in central Hokkaido, northern Japan<br />The adoption of laser-based survey system has improved operational efficiency for identifying the forests to be harvested<br />Recent advances in global positioning system (GPS) technology enable us to pinpoint the geographic location of marked trees for harvest<br />2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />4<br />
  5. 5. Purpose<br />To present practical applications of innovative surveying technologies to the precision management of selection forests in Hokkaido, Japan<br />Selection forest refers to a forest managed with an uneven-aged silvicultural system, in which trees are removed individually from a large area periodically (Zingg et al., 1999)<br />Topics include:<br />The use of laser-based survey system for stand classification<br />The use of GPS for tree marking<br />2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />5<br />
  6. 6. 2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />The Univ. of Tokyo Hokkaido Forest<br />Located in Furano, Hokkaido<br />43°10´- 20´ N, 142°20´- 40´ E<br />Between the cool-temperate and the sub-boreal zone<br />22,733 ha of forestland<br />Established in 1899<br />Natural mixed forest with coniferous and broad-leaved species<br />The average growing stock is 210 m3/ha<br />The cutting volume was 21,000 m3in 2009<br />6<br />
  7. 7. 2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />7<br />
  8. 8. 2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />8<br />
  9. 9. 2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />9<br />
  10. 10. 2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />10<br />
  11. 11. Using Laser-based Survey System for Stand Classification<br />2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />11<br />
  12. 12. Stand Classification<br />… serves as the basis for spatial management planning on where to be cut (Owariet al., 2007)<br />… identifies selection forests where natural regeneration is expectable so that selection logging is applicable (Takahashi, 2001)<br />In-depth ground surveys are essential for stand classification (Owariet al., 2009)<br />2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />12<br />
  13. 13. Ground Survey for Stand Classification<br />The ground survey was formerly conducted using a pocket compass with a measuring rope<br />Although this method was reasonably accurate, it required much time and effort<br />Laser-based survey system has been introduced to stand classification surveys since 2008 <br />2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />13<br />
  14. 14. Laser-based Survey System<br />TruPulse 200 with Mapstar compass module (Laser Technology, Inc., CO, USA)<br />Archer Field PC (Juniper Systems, Inc. , UT, USA)<br />GeoSketch 2 (TimberTech Co., Ltd., Japan)<br />2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />14<br />
  15. 15. Stand Classification Map<br />Example: sub-comp. 66A<br />Area: 106.27 ha, of which 29.23 ha were classified as selection forest<br />Effectiveness of laser-based traverse survey (Tookuniet al., 2010)<br />Mean error of closure: 1.3 m<br />Number of survey crew: 2-3 (from 4)<br />Time for in-house data processing: 1/6 of the conventional method<br />2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />15<br />
  16. 16. 2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />16<br />Tree & Stump Locations<br />Permanent Plot No. 5137<br />
  17. 17. Stand Visualization using Forest Window<br />2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />17<br />Before Harvest<br />After Harvest<br />Note: Dark Green: Conifer, Light Green: Broad-leaves, Red: Harvest trees<br />
  18. 18. Using GPS for Tree Marking<br />2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />18<br />
  19. 19. Tree Marking<br />… is an essential technique in single-tree selection system (Owariet al., 2010)<br />… involves the careful selection of trees for harvest according to forest management objectives (OMNR, 2004)<br />… affects the growth, quality and regeneration of a stand<br />2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />19<br />
  20. 20. Record of Marked Tree Locations<br />Previously, the tree marker wrote down tracks and approximate positions of marked trees by hand during marking operations<br />Since precise locations were not prepared, loggers and managers experienced trouble finding marked trees<br />GPS has been introduced to tree marking operations since 2008<br />2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />20<br />
  21. 21. Positional Data Collection by GPS<br />GPS receiver<br />GPSMAP 60CSx (Garmin Ltd.)<br />Small, handy, and easy to use<br />Relatively easy GPS signal reception in a forested area (Tsuyukiet al., 2006)<br />Marking the location (waypoint)<br />Stand by the stem<br />Stay shortly<br />Press “MARK” and “ENTER” buttons by one hand<br />2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />21<br />
  22. 22. 2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />22<br />Mapping of Marked Trees<br />During April - May 2008 (defoliated season)<br />Rate of removals: 16 % of the standing volume (a total of 1,565 trees were selected and marked)<br />All positions were successfully measured<br />Mean positional error was 5.7 m<br />
  23. 23. Intersection with Selection Forests<br />2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />23<br />Using the “select by location” option of ArcGIS 9.3 (ESRI Corp., CA, USA), trees that intersect with polygon features of selection forest can be extracted<br />Of 1,565 trees, 410 (26%) were located outside the selection forests<br />
  24. 24. Harvest Intensity<br />2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />24<br />Spatial distribution of harvest intensity (trees ha-1) can be identified by calculating the point density of marked trees<br />Mean density within selection forest was 35.3 trees ha-1<br />
  25. 25. Summary<br />Using laser-based survey system for stand mapping, we can …<br />… accurately identify the area for selection logging<br />… reduce the number of crew for ground surveys<br />… save the time for in-house data processing<br />Using GPSfor tree marking, we can …<br />… easily record the location of trees that were marked for harvest<br />… produce the information on where marked trees are located<br />… know exactly how tree marking operations are implemented<br />2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />25<br />
  26. 26. Concluding Remarks<br />Innovative surveying technologies such as laser-based survey system and GPS may be useful tools for forest managers in Cambodia<br />We are happy to share the know-how on precision forestrywith selection logging<br />2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />26<br />
  27. 27. Thank you!<br />This paper was partly supported by the Japan Society for the Promotion of Science, Grant-in-Aid for Young Scientists (B), 20710035, 2008 – 2010<br />(Corresponding address: owari@uf.a.u-tokyo.ac.jp)<br />2010/08/10<br />Phnom Penh, Cambodia (Owari, T.)<br />27<br />

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