Associate Professor
Research Interests:
Forest Sciences Centre 2036
2424 Main Mall
Vancouver, BC V6T 1Z4
work phone: 6048223559

The study of mechanics is the study of forces that cause motion. In the natural environment the functions that relate forces to motions can be very complicated. Studying the movement of a tree subject to wind loads or the flow of water through a natural soil are very interesting subjects for me. These subjects are often best posed as problems in continuum mechanics. In addition, with the increased mechanization of harvesting operations the mechanics of machinery is becoming very important. Analytical mechanics can be used to develop the equations of motion for a machine. With the equations of motion it is possible to better understand the interactions of the machine with the environment.

I have over eleven years of professional experience in forest operations including cruising, engineering, road construction, and logging. Thus, operations research in forestry is also interesting to me. Given the long periods between harvests and the numerous constraints on harvesting operations, it is important to find robust solutions to scheduling and harvesting problems.


The mechanics of anisotropic materials applied to the management of forests


Professional Affiliations

Canadian Institute of Forestry CIF
Council on Forest Engineering COFE

Current Graduate Students

Gregory Demille, MSc
Cosmin Man, PhD
Forest Carbon Modelling. (investigating carbon offset strategies for UBC’s Malcolm Knapp and Fraser Research Forests)

Current Courses

Summer 2018
No FRST course(s) were found for S2018 term.

Selected Publications

Lyons, C. Kevin and Greg Demille (2016). Unexpected events when manually falling trees in coastal British Columbia Forest Science
Man C.D., Lyons, K.C., Nelson, J.D., and Bull, G.Q. (2015). Cost to produce carbon credits by reducing the harvest level in British Columbia, Canada Forest Policy and Economics. February:9-17 doi:10.1016/j.forpol.2014.12.002
C. Kevin Lyons (2015). New development of a remotely operated falling wedge Forestry Chronicle 91(2): 176-181
Lyons, C. Kevin and Greg Demille (2015). Management requiring conditions when manually falling trees Forestry Chronicle 91(03):299-305
McLeod CB, Sarkany D, Davies H, Lyons K, Koehoorn M. (2015). Prevention in dangerous industries: does safety certification prevent tree faller injuries? Scandinavian Journal of Work, Environment and Health. 41(5):478–485.
Cosmin D. Man, Kevin C. Lyons, John D. Nelson, and Gary Q. Bull (2013). Potential of alternate forest management practices to sequester and store Carbon in two forest estates in British Columbia, Canada Forest Ecology and Management 305:239-247
Lyons C. Kevin, Sessions John, Wimer Jeff (2013). The adequacy of falling object protection design criteria for feller bunchers Forest Science
Lyons, C. Kevin. Ewart James (2012). The Wood duck; a new tree falling tool -Western Journal of Applied Forestry. 27(3):137-142
Lyons C. Kevin, Sessions John, Wimer Jeff (2012). Effect of undercut style and post hinge behaviour in tree felling -Forest Science. 58(6):547-558
C. Kevin Lyons (2012). Managing unexpected events. -Safety Advisory Foundation for Research and Education.
Lyons C. Kevin, Noll Florian (2011). Optimizing a novel method for manually falling trees. Forestry Chronicle -Forestry Chronicle. 87:(04) 537-541
Lyons, C. Kevin, Xing, Li, Nelson, John, D. (2010). Using LME in helicopter logging data -Society of American Foresters -Forest Science. 56(4):356-365
Noll Florian, Lyons C. Kevin. (2010). A novel method for manually falling trees -CIF -Forestry Chronicle, 86(5):608-613
C. Kevin Lyons Ken Day (2009). Temporary logging roads surfaced with mulched wood -Society of American Foresters -Western Journal of Applied Forestry, 24(3):124-127.
C. Kevin Lyons (2009). A safer way to fall trees -Knowledge Network -Daily Planet. Clip available online at
C. Kevin Lyons (2008). An anisotropic heterogeneous beam with overspecified boundary conditions -Journal of Mechanics of Materials and Structures, 3(8):1549-1559
Lyons C. Kevin (2007). Considering cable stretch in logging applications -International Journal of Forest Engineering, 19(1):28-34
Lyons, C. Kevin, Lansdowne, Matthew, and Bennett, D. M. (2007). Load sharing in gravel decked log stringer bridges -International Journal of Forest Engineering, 19(1):41-49
Lyons C. Kevin, Lansdowne Matthew (2006). Vertical stress in the gravel decking of log bridges -Society of American Foresters -Western Journal of Applied Forestry, Vol. 21, No. 2, pp. 61-67
Lyons C. Kevin Fannin J. (2006). Geosynthetic-reinforced unpaved roads: unified design concepts and material parameterization -NSERC -Canadian Geotechnical Journal, Vol. 43 (pp. 1389-1394)
Shetty Mithun K, Lyons C. Kevin (2006). An onboard load measuring device for off-highway log trucks -International Journal of Forest Engineering, Vol.18, No. 1 (pp. 33-40)
Lyons C. Kevin Bennett D. M. (2005). The effect of taper on the MOE of log stringers -Springer -Wood Science and Technology, Vol. 39 No 7 pp. 560-568.
Lyons C. Kevin, Joseph McNeel (2004). Partial Retention and Helicopter Turn Volume -Forest Products Journal, Vol 54, pp. 58-61
Saravi Albert, Lyons C. Kevin (2004). Finite element modeling of guyed backspars in cable logging -Canadian Journal of Forest Research, Vol 34, pp.1-12
Lyons C. Kevin (2002). Stress Functions for a Heterogeneous Section of a Tree International Journal of Solids and Structures, Vol. 39 (pp. 4615-4625).
Lyons C. Kevin, Guenther Ronald B., Pyles Marvin R. (2002). Considering Heterogeneity in a Cylindrical Section of a Tree International Journal of Solids and Structures, Vol. 39 (pp.4665-4675).
Lyons C. Kevin, Guenther Ronald B., Pyles Marvin R. (2002). Elastic Equations for a Cylindrical Section of a Tree International Journal of Solids and Structures, Vol. 39 (pp. 4773-4786).
Pyles Marvin R., Lyons Kevin. (2001). Analysis of Unguyed Spar Trees July, 2001, International Journal of Forest Engineering.
Lyons C.K. (1997). Analysis of line tensions and backspar stresses in a skyline system: a pilot study FERIC, Vancouver, Technical Note TN-258