Director, Forest Operations and Biomass Utilization
Ph.D., Forest Engineering, Oregon State University, Corvallis, Oregon, December 1997
M.S., Forest Operations, University of Maine, Orono, Maine, December 1994
M.S., Forest Ecology, Kangwon National University, South Korea, March 1986
B.S., Forest Resources, Kangwon National University, South Korea, March 1984
Forest operations involve the application of a variety of forest management tools and processes to achieve the objectives of sustainable forest management. Traditionally, wood production has been the main objective of timber extraction practices to supply raw materials (i.e., logs and wood chips) to the forest products manufacturing companies. While this still holds as an important goal of timber harvesting today, equipment and systems used in forest operations are now often employed to address other forest management issues such as stand condition improvement and fuel treatments to reduce wildfire risks. The use of harvesting systems as a tool to a wide range of forest management objectives is now increasingly common, as we often deal with man-made or second-growth stands. Forest operations need to be viewed as an integrated component of forest management and not an isolated field of study. Collaboration with other disciplines is increasingly important in order to address the challenging multiple objectives of today's forest management.
Utilization of forest residues and small-diameter logs resulting from forest restoration and fuels treatment operations in the southwestern US is a challenging task, as there is lack of infrastructure of forest products industry available in the region. The lack of market for those materials and high transportation costs for low-value products has been a well-known issue. I am interested in improving today's forest management practices and utilization of small-diameter trees and forest residues, especially in topics related to fuels management and forest restoration using forest operations tools. My research focus in innovative forest and biomass operations are to augment ERI's program in forest ecology and restoration, as well as address the needs of the region's forest products industry.
(see C.V. below to view a complete list of publications):
- Lee, E. and H.-S. Han. 2017. Air Curtain Burners: A tool for disposal of forest residues. Forests, 8, 296; doi:10.3390/f8080296
- Jang, W. D. Page-Dumroese, and H.-S. Han. 2017. Soil physical and chemical property changes associated with heat transfer from burning woody residues in an Air Curtain Burner or slash piles in northern California, USA. Forests, 8, 297; doi:10.3390/f8080297
- Woo, H. and H.-S. Han. 2017. Performance of screening biomass feedstocks using star and deck screen machines Applied Engineering in Agriculture. ASABE special collection publication (Accepted and in press).
- Kizha, A.R., H.-S. Han, J Paulson, and A. Koirala. 2017. Strategies for reducing moisture content in forest residues at the harvest site. Applied Engineering in Agriculture. ASABE special collection publication (Accepted and in press).
- Lee, E., J. Bisson and H.-S. Han. 2017. Evaluating the production cost and quality of feedstock produced by a sawdust machine. Biomass & Bioenergy. doi: 10.1016/j.biombioe.2017.06.010.
- Seo, Y., H.-S. Han, T. Bilek, J. Choi, D. Cha, J. Lee. 2017. Economic analysis of a small-sized combined heat and power plant using forest biomass. Forest Science and Technology. doi: 10.1080/21580103.2017.1350209.
- Kizha, A.R., H.-S. Han. 2017. Moisture content in forest residue piles: An insight on sampling methods and procedures. Current Forestry Reports. 3(1):1-11. doi 10.1007/s40725-017-0060-5.
- Han, S.-K., H.-S. Han, and W. Elliott, and T. Bilek. 2016. ThinTool: A spreadsheet model to evaluate fuel reduction thinning cost, net energy output, and nutrient impacts. Forest Science. doi: 10.5849/forsci.2016-018.
- Berrill, J.-P. and H.-S. Han. 2016. Carbon, harvest yields, and residues from restoration in a mixed forest on California's Coast Range. Forest Science. doi:10.5849/forsci.16-061.
- Kizha, A.R. and H.-S. Han. 2016. Processing and sorting forest residues: Cost, productivity and managerial impacts. Biomass & Bioenergy. Vol.93:97-106.
- Kizha, A.R. and H.-S. Han. 2016. Developing allometric equation for coastal redwood (Sequoia sempervirens). Forests, 7, 96; doi:10.3390/f7050096.
- Bisson, J. and H.-S. Han. 2016. Quality of feedstock produced from sorted forest residues. American Journal of Biomass and Bioenergy. Vol.5(2):81-97.
- Bisson, J., S.-K. Han, and H.-S. Han. 2016. Evaluating the system logistics of a biomass recovery operation in northern California. Forest Products Journal. Vol.66(1/2):88-96.
- Montgomery, T. and H.-S. Han. 2016. A. Kizhakkepurakkal. A GIS-based method for locating and planning centralized biomass grinding operations. Biomass & Bioenergy. Vol.85:262-270