{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,13]],"date-time":"2025-10-13T15:36:56Z","timestamp":1760369816652,"version":"build-2065373602"},"reference-count":66,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2022,5,5]],"date-time":"2022-05-05T00:00:00Z","timestamp":1651708800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Forest Innovation Program: Regional Science Supporting the Forest Bioeconomy"},{"name":"Canadian Wood Fibre Centre and the University of Victoria SURREAL lab"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Forest management practices can increase climate change mitigation potential through applications focused on carbon budgets. One such application involves utilizing non-merchantable material (i.e., logging residues typically piled and burned) for bio-energy. However, limited remote sensing data is available for estimating wood residues until after timber has been harvested, at which point recovery of residual wood is of little financial interest. This research utilizes a hybrid method to develop models that provide pre-harvest estimates of the amount of merchantable and non-merchantable material that would result from harvesting and investigates the scalability and transferability of such measures to the harvest block level. Models were trained using 38 plots across two sites dominated by Douglas-fir, then expanded to ten harvest blocks, and transferred to eight blocks from two sites without training data before being compared against multiple independent block-level estimates. Model results showed root mean square errors of 35% and 38% for merchantable and non-merchantable volumes, respectively. Merchantable volume estimates in blocks with training had average absolute differences from the harvest scale (9\u201334%) similar to transferred blocks without training (15\u201320%). Non-merchantable model results were also similar in both trained and transferred harvest blocks, with the pre-harvest model results having lower differences from the post-harvest geospatial versus field surveys. The results from this study show promise for hybrid methods to improve estimates of merchantable wood volume compared to conventional forest cover data approaches, and provide the ability to predict non-merchantable volumes within the range of accuracy of post-harvest residue survey methods.<\/jats:p>","DOI":"10.3390\/rs14092204","type":"journal-article","created":{"date-parts":[[2022,5,6]],"date-time":"2022-05-06T02:46:39Z","timestamp":1651805199000},"page":"2204","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Combining Area-Based and Individual Tree Metrics for Improving Merchantable and Non-Merchantable Wood Volume Estimates in Coastal Douglas-Fir Forests"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1550-7467","authenticated-orcid":false,"given":"Jason","family":"Kelley","sequence":"first","affiliation":[{"name":"Department of Geography, University of Victoria, Victoria, BC V8P 5C2, Canada"}]},{"given":"J. A. (Tony)","family":"Trofymow","sequence":"additional","affiliation":[{"name":"Natural Resources Canada, Canadian Forest Service, Pacific Forestry Centre, 506 West Burnside Road, Victoria, BC V8Z 1M5, Canada"},{"name":"Department of Biology, University of Victoria, Victoria, BC V8P 5C2, Canada"}]},{"given":"Christopher","family":"Bone","sequence":"additional","affiliation":[{"name":"Department of Geography, University of Victoria, Victoria, BC V8P 5C2, Canada"}]}],"member":"1968","published-online":{"date-parts":[[2022,5,5]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"137","DOI":"10.1016\/j.ecolecon.2013.05.005","article-title":"Valuing forest ecosystem services: What we know and what we \u2019don\u2019t","volume":"93","author":"Ninan","year":"2013","journal-title":"Ecol. Econ."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"988","DOI":"10.1126\/science.1201609","article-title":"A large and persistent carbon sink in the world\u2019s forests","volume":"333","author":"Pan","year":"2011","journal-title":"Science"},{"key":"ref_3","unstructured":"Natural Resources Canada (2020). The State of Canada\u2019s Forests, Natural Resources Canada, Canadian Forest Service. Available online: https:\/\/cfs.nrcan.gc.ca\/publications?id=40219&lang=en_CA."},{"key":"ref_4","unstructured":"Nabuurs, G.J., Masera, O., Andrasko, K., Benitez-Ponce, P., Boer, R., Dutschke, M., Elsiddig, E., Ford-Robertson, J., Frumhoff, P., and Karjalainen, T. (2007). Chapter 9: Forestry. Climate Change 2007: Mitigation, Cambridge University Press."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"1677","DOI":"10.1016\/j.foreco.2008.02.056","article-title":"Derivation of a spatially explicit 86-year retrospective carbon budget for a landscape undergoing conversion from old-growth to managed forests on Vancouver Island, BC","volume":"256","author":"Trofymow","year":"2008","journal-title":"Forest Ecol. Manag."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"439","DOI":"10.1002\/er.3233","article-title":"Strategic optimization of forest residues to bioenergy and biofuel supply chain","volume":"39","author":"Cambero","year":"2015","journal-title":"Int. J. Energy Res."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"3515","DOI":"10.5194\/bg-11-3515-2014","article-title":"Quantifying the biophysical climate change mitigation potential of Canada\u2019s forest sector","volume":"11","author":"Smyth","year":"2014","journal-title":"Biogeosciences"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"257","DOI":"10.1007\/s11027-016-9735-7","article-title":"Climate change mitigation strategies in the forest sector: Biophysical impacts and economic implications in British Columbia, Canada","volume":"23","author":"Xu","year":"2018","journal-title":"Mitig. Adapt. Strateg. Glob. Change"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"149","DOI":"10.3763\/cpol.2003.0318","article-title":"The climatic impacts of land surface change and carbon management, and the implications for climate-change mitigation policy","volume":"3","author":"Marland","year":"2003","journal-title":"Clim. Policy"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"968","DOI":"10.1126\/science.1100103","article-title":"Stabilization wedges: Solving the climate problem for the next 50 years with current technologies","volume":"305","author":"Pacala","year":"2004","journal-title":"Science"},{"key":"ref_11","unstructured":"Hiraishi, T., Krug, T., Tanabe, K., Srivastava, N., Baasansuren, J., Fukuda, M., and Troxler, T.G. (2013). 2014 Revised Supplementary Methods and Good Practice Guidance Arising from the Kyoto Protocol, IPCC."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"1470","DOI":"10.1139\/cjfr-2018-0080","article-title":"Forecasting the spatial distribution of logging residues across the Canadian managed forest","volume":"48","author":"Barrette","year":"2018","journal-title":"Can. J. For. Res."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"217","DOI":"10.1016\/j.biombioe.2014.08.023","article-title":"Fibre use, net calorific value, and consumption of forest-derived bioenergy in British Columbia, Canada","volume":"70","author":"Dymond","year":"2014","journal-title":"Biomass Bioenergy"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"1071","DOI":"10.1111\/gcbb.12389","article-title":"Estimating product and energy substitution benefits in national-scale mitigation analyses for Canada","volume":"9","author":"Smyth","year":"2017","journal-title":"Glob. Change Biol. Bioenergy"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"182","DOI":"10.1139\/cjfr-2013-0281","article-title":"Comparison of remote sensing and ground-based methods for determining residue burn pile wood volumes and biomass","volume":"44","author":"Trofymow","year":"2014","journal-title":"Can. J. For. Res."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"10","DOI":"10.1186\/s13705-021-00281-w","article-title":"Sustainable forest biomass: A review of current residue harvesting guidelines","volume":"11","author":"Titus","year":"2021","journal-title":"Energy Sustain. Soc."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"181","DOI":"10.1016\/j.foreco.2010.04.015","article-title":"Future quantities and spatial distribution of harvesting residue and dead wood from natural disturbances in Canada","volume":"260","author":"Dymond","year":"2010","journal-title":"For. Ecol. Manag."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"832","DOI":"10.1139\/cjfr-2015-0451","article-title":"Spatial and temporal quantification of forest residue volumes and delivered costs","volume":"46","author":"Wells","year":"2016","journal-title":"Can. J. For. Res."},{"key":"ref_19","first-page":"543","article-title":"Availability of logging residues and likelihood of their utilization for electricity production in the US south","volume":"117","author":"Pokharel","year":"2019","journal-title":"J. For."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"171","DOI":"10.1016\/j.biombioe.2004.08.010","article-title":"Logging residues from regeneration fellings for biofuel production\u2014A GIS-based availability analysis in Finland","volume":"28","author":"Ranta","year":"2005","journal-title":"Biomass Bioenergy"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"90","DOI":"10.1016\/j.biombioe.2016.12.014","article-title":"Estimating the spatial distribution and locating hotspots of forest biomass from harvest residues and fire-damaged stands in Canada\u2019s managed forests","volume":"97","author":"Mansuy","year":"2017","journal-title":"Biomass Bioenergy"},{"key":"ref_22","unstructured":"Sidders, D., Joss, B., and Keddy, T. (2008). Project TID8 25B: GIS-Based Inventory and Analysis of Forestry and Agriculture Biomass, Natural Resources Canada."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"270","DOI":"10.5589\/m09-014","article-title":"Aboveground large tree mass estimation in a coastal forest in British Columbia using plot-level metrics and individual tree detection from lidar","volume":"35","author":"Ferster","year":"2009","journal-title":"Can. J. Remote Sens."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"88","DOI":"10.1016\/S0034-4257(01)00290-5","article-title":"Predicting forest stand characteristics with airborne scanning laser using a practical two-stage procedure and field data","volume":"80","year":"2002","journal-title":"Remote Sens. Environ."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"827","DOI":"10.5558\/tfc84827-6","article-title":"Predicting forest stand variables from LiDAR data in the Great Lakes\u2014St. Lawrence forest of Ontario","volume":"84","author":"Woods","year":"2008","journal-title":"For. Chron."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"378","DOI":"10.5558\/tfc2014-072","article-title":"Validating estimates of merchantable volume from airborne laser scanning (ALS) data using weight scale data","volume":"90","author":"White","year":"2014","journal-title":"For. Chron."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"110","DOI":"10.1016\/j.rse.2019.04.006","article-title":"Demonstrating the transferability of forest inventory attribute models derived using airborne laser scanning data","volume":"227","author":"Tompalski","year":"2019","journal-title":"Remote Sens. Environ."},{"key":"ref_28","doi-asserted-by":"crossref","unstructured":"Kelley, J., Trofymow, J.A., Metsaranta, J.M., Filipescu, C.N., and Bone, C. (2021). Use of multi-temporal LiDAR to quantify fertilization effects on stand volume and biomass in late-rotation coastal Douglas-fir forests. Forests, 12.","DOI":"10.3390\/f12050517"},{"key":"ref_29","doi-asserted-by":"crossref","unstructured":"White, J.C., Wulder, M.A., Varhola, A., Vastaranta, M., Coops, N.C., Cook, B.D., Pitt, D., and Woods, M. (2013). A Best Practices Guide for Generating Forest Inventory Attributes from Airborne Laser Scanning Data Using an Area-Based Approach, Natural Resources Canada. Available online: https:\/\/cfs.nrcan.gc.ca\/publications?id=34887.","DOI":"10.5558\/tfc2013-132"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"1131","DOI":"10.1007\/s10342-010-0401-4","article-title":"Uncertainty in timber assortment estimates predicted from forest inventory data","volume":"129","author":"Holopainen","year":"2010","journal-title":"Eur. J. For. Res."},{"key":"ref_31","first-page":"499","article-title":"The use of airborne laser scanning to estimate sawlog volumes","volume":"81","author":"Korhonen","year":"2008","journal-title":"For. Int. J. For. Res."},{"key":"ref_32","unstructured":"Gougeon, F.A., and Leckie, D.G. (2003). Pacific Forestry Centre. Forest Information Extraction from High Spatial Resolution Images Using an Individual Tree Crown Approach, Natural Resources Canada."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"1236","DOI":"10.1111\/2041-210X.12575","article-title":"Tree-centric mapping of forest carbon density from airborne laser scanning and hyperspectral data","volume":"7","author":"Dalponte","year":"2016","journal-title":"Methods Ecol. Evol."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"75","DOI":"10.14358\/PERS.78.1.75","article-title":"A new method for segmenting individual trees from the Lidar point cloud","volume":"78","author":"Li","year":"2012","journal-title":"Photogramm. Eng. Remote Sens."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"177","DOI":"10.1111\/gcb.13388","article-title":"Allometric equations for integrating remote sensing imagery into forest monitoring programmes","volume":"23","author":"Jucker","year":"2017","journal-title":"Glob. Change Biol."},{"key":"ref_36","unstructured":"Kozak, A. (2018, October 20). Development of Taper Equations by BEC Zones and Species, Available online: https:\/\/www.for.gov.bc.ca\/hfd\/library\/documents\/bib95354a.pdf."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"1106","DOI":"10.1139\/cjfr-2020-0506","article-title":"Mixtures of airborne lidar-based approaches improve predictions of forest structure","volume":"51","author":"Blackburn","year":"2021","journal-title":"Can. J. For. Res."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"1190","DOI":"10.3390\/rs4051190","article-title":"Advances in forest inventory using airborne laser scanning","volume":"4","author":"Yu","year":"2012","journal-title":"Remote Sens."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"2257","DOI":"10.3390\/rs5052257","article-title":"Retrieval of forest aboveground biomass and stem volume with airborne scanning LiDAR","volume":"5","author":"Kankare","year":"2013","journal-title":"Remote Sens."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"1277","DOI":"10.1139\/cjfr-2018-0378","article-title":"Comparison of geospatial and ground-based methods for determining post-harvest dispersed woody residues","volume":"49","author":"Trofymow","year":"2019","journal-title":"Can. J. For. Res."},{"key":"ref_41","unstructured":"Trofymow, J.A., Gougeon, F., and Kelley, J. (2017). Determination of Dispersed and Piled Post-Harvest Residues in Coastal Douglas-Fir Cutblocks Using Unmanned Aerial Vehicle Imagery and Ground-Based Surveys, Natural Resources Canada. Available online: http:\/\/cfs.nrcan.gc.ca\/publications?id=38836."},{"key":"ref_42","unstructured":"Meidinger, D., and Pojar, J. (1991). Chapter 6: Coastal Western Hemlock Zone, Ecosystems of British Columbia, BC Special Report Series No., 6."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"136","DOI":"10.1016\/j.agrformet.2012.06.011","article-title":"Influence of stand age on the magnitude and seasonality of carbon fluxes in Canadian forests","volume":"165","author":"Coursolle","year":"2012","journal-title":"Agric. For. Meteorol."},{"key":"ref_44","unstructured":"Trofymow, J.A., Porter, G.L., Blackwell, B.A., Marshall, V., Arskey, R., and Pollard, D. (1997). Chronosequences Selected for Research into the Effects of Converting Coastal British Columbia Old Growth Forests to Managed Forests: An Establishment Report, Pacific Forestry Centre. Information Report BC-X-374."},{"key":"ref_45","unstructured":"Blackwell, B.A., Trofymow, J.A., and Hedberg, H.A. (2002). Pacific Forestry Centre. Stand Structure and Species Composition in Chronosequences of Forests on Southern Vancouver Island, Natural Resources Canada."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"676","DOI":"10.1046\/j.1365-2745.2000.00482.x","article-title":"Density-dependent effects on tree survival in an old-growth Douglas fir forest","volume":"88","author":"He","year":"2000","journal-title":"J. Ecol."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"819","DOI":"10.1007\/s00468-010-0452-7","article-title":"Comparing canopy metrics derived from terrestrial and airborne laser scanning in a douglas-fir dominated forest stand","volume":"24","author":"Hilker","year":"2010","journal-title":"Trees"},{"key":"ref_48","unstructured":"Quinn, G.S. (2018). Derivation of Forest Productivity and Structure Attributes from Remote Sensing Imaging Technology. [Ph.D. Thesis, University of Victoria]. Available online: https:\/\/dspace.library.uvic.ca:8443\/handle\/1828\/10471."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"112061","DOI":"10.1016\/j.rse.2020.112061","article-title":"LidR: An R package for analysis of airborne laser scanning (ALS) data","volume":"251","author":"Roussel","year":"2020","journal-title":"Remote Sens. Environ."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"863","DOI":"10.14358\/PERS.80.9.863","article-title":"Generating pit-free canopy height models from airborne Lidar","volume":"80","author":"Khosravipour","year":"2014","journal-title":"Photogramm. Eng. Remote Sens."},{"key":"ref_51","unstructured":"National Forest Inventory (2020, August 15). Canada\u2019s National Forest Inventory Ground Sampling Guidelines: Specifications for Ongoing Measurements, Available online: https:\/\/nfi.nfis.org\/resources\/groundplot\/Gp_guidelines_v5.0.pdf."},{"key":"ref_52","unstructured":"Timber Pricing Branch (2022, March 27). Scaling Manual, Available online: https:\/\/www.for.gov.bc.ca\/ftp\/hva\/external\/!publish\/web\/manuals\/Scaling\/2011\/Scaling2011NovMaster.pdf."},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"1","DOI":"10.18637\/jss.v036.i11","article-title":"Feature selection with the Boruta package","volume":"36","author":"Kursa","year":"2010","journal-title":"J. Stat. Softw."},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"1","DOI":"10.18637\/jss.v028.i05","article-title":"Building predictive models in R using the caret package","volume":"28","author":"Kuhn","year":"2008","journal-title":"J. Stat. Softw."},{"key":"ref_55","first-page":"18","article-title":"Classification and regression by random forest","volume":"2","author":"Liaw","year":"2002","journal-title":"R News"},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"3704","DOI":"10.3390\/f6103704","article-title":"Comparing ALS and image-based point cloud metrics and modelled forest inventory attributes in a complex coastal forest environment","volume":"6","author":"White","year":"2015","journal-title":"Forests"},{"key":"ref_57","doi-asserted-by":"crossref","first-page":"57","DOI":"10.1016\/j.foreco.2018.06.040","article-title":"Long-term time series of annual ecosystem production (1985\u20132010) derived from tree rings in Douglas-fir stands on Vancouver Island, Canada using a hybrid biometric-modelling approach","volume":"429","author":"Metsaranta","year":"2018","journal-title":"For. Ecol. Manag."},{"key":"ref_58","unstructured":"Province of British Columbia (2021, May 29). Forest Inventory, Available online: https:\/\/www2.gov.bc.ca\/gov\/content\/industry\/forestry\/managing-our-forest-resources\/forest-inventory."},{"key":"ref_59","unstructured":"Province of British Columbia (2021, May 29). Provincial Logging Residue and Waste Measurement Procedures Manual, Available online: https:\/\/www2.gov.bc.ca\/assets\/gov\/farming-natural-resources-and-industry\/forestry\/timber-pricing\/residue-and-waste\/rwp_amend_28.pdf."},{"key":"ref_60","doi-asserted-by":"crossref","first-page":"591","DOI":"10.1093\/biomet\/52.3-4.591","article-title":"An analysis of variance test for normality (complete samples)","volume":"52","author":"Shapiro","year":"1965","journal-title":"Biometrika"},{"key":"ref_61","doi-asserted-by":"crossref","first-page":"395","DOI":"10.1093\/forestry\/cpq022","article-title":"Non-parametric prediction and mapping of standing timber volume and biomass in a temperate forest: Application of multiple optical\/LiDAR-derived predictors","volume":"83","author":"Latifi","year":"2010","journal-title":"Forestry"},{"key":"ref_62","doi-asserted-by":"crossref","first-page":"382","DOI":"10.5589\/m13-046","article-title":"Airborne laser scanning and digital stereo imagery measures of forest structure: Comparative results and implications to forest mapping and inventory update","volume":"39","author":"Vastaranta","year":"2013","journal-title":"Can. J. Remote Sens."},{"key":"ref_63","doi-asserted-by":"crossref","first-page":"1567","DOI":"10.14214\/sf.1567","article-title":"Nationwide airborne laser scanning based models for volume, biomass and dominant height in Finland","volume":"50","author":"Kotivuori","year":"2016","journal-title":"Silva Fenn."},{"key":"ref_64","doi-asserted-by":"crossref","first-page":"16","DOI":"10.1186\/s40663-018-0134-2","article-title":"Estimating upper stem diameters and volume of Douglas-fir and western hemlock trees in the Pacific Northwest","volume":"5","author":"Poudel","year":"2018","journal-title":"For. Ecosyst."},{"key":"ref_65","doi-asserted-by":"crossref","unstructured":"Miles, P.D., and Smith, W.B. (2009). Specific Gravity and Other Properties of Wood and Bark for 156 Tree Species Found in North America, Research Note NRS-38.","DOI":"10.2737\/NRS-RN-38"},{"key":"ref_66","doi-asserted-by":"crossref","first-page":"119225","DOI":"10.1016\/j.foreco.2021.119225","article-title":"Airborne laser scanning reveals large tree trunks on forest floor","volume":"491","author":"Heinaro","year":"2021","journal-title":"For. Ecol. Manag."}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/14\/9\/2204\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T23:06:18Z","timestamp":1760137578000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/14\/9\/2204"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,5,5]]},"references-count":66,"journal-issue":{"issue":"9","published-online":{"date-parts":[[2022,5]]}},"alternative-id":["rs14092204"],"URL":"https:\/\/doi.org\/10.3390\/rs14092204","relation":{},"ISSN":["2072-4292"],"issn-type":[{"type":"electronic","value":"2072-4292"}],"subject":[],"published":{"date-parts":[[2022,5,5]]}}}