Skip to Main Content
An imputed forest composition map for New England screened by species range boundariesAuthor(s): Matthew J. Duveneck; Jonathan R. Thompson; B. Tyler Wilson
Source: Forest Ecology and Management. 347: 107-115.
Publication Series: Scientific Journal (JRNL)
Station: Northern Research Station
View PDF (3.55 MB)
DescriptionInitializing forest landscape models (FLMs) to simulate changes in tree species composition requires accurate fine-scale forest attribute information mapped continuously over large areas. Nearest-neighbor imputation maps, maps developed from multivariate imputation of field plots, have high potential for use as the initial condition within FLMs, but the tendency for field plots to be imputed over large geographical distances can result in species being mapped outside of their home ranges, which is problematic. We developed an approach for evaluating and imputing field plots based on their similarity across multiple spatial environmental variates, their species composition, and their geographical distance between source and imputation to produce a map that is appropriate for initializing an FLM. We used this approach to map 13 million ha of forest throughout the six New England states (Rhode Island, Connecticut, Massachusetts, New Hampshire, Vermont, and Maine). Using both independent state forest and, more extensive, ecoregion validation data sets, we compared the imputation map to field inventory data, based on the dissimilarity of tree community composition and the rank order correlation of tree species abundance. Average Bray-Curtis dissimilarity between the imputation map and field plots was 0.32 and 0.12, for the state forest and ecoregion validation data sets, respectfully. Average Spearman rank order correlation was 0.81 and 0.93 for the state forest and ecoregion validation data sets, respectfully. Our analyses suggest that this approach to imputation can realistically capture regional variation in forest composition. We expect the imputation map will be valuable for several regional forest studies and that the approach could be successfully used in other regions.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, firstname.lastname@example.org if you notice any errors which make this publication unusable.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationDuveneck, Matthew J.; Thompson, Jonathan R.; Wilson, B. Tyler. 2015. An imputed forest composition map for New England screened by species range boundaries. Forest Ecology and Management. 347: 107-115.
KeywordsNearest-neighbor imputation, New England, Forest inventory, Tree species distribution
- Imputed forest structure uncertainty varies across elevational and longitudinal gradients in the western Cascade mountains, Oregon, USA
- Nearest neighbor imputation of species-level, plot-scale forest structure attributes from LiDAR data
- Geographical ecology of dry forest tree communities in the West Indies
XML: View XML