Skip to Main Content
Practical Considerations When Using Perturbed Forest Inventory Plot Locations To Develop Spatial Models: A Case StudyAuthor(s): John W. Coulston; Gregory A. Reams; Ronald E. McRoberts; William D. Smith
Source: In: Proceedings of the sixth annual forest inventory and analysis symposium; 2004 September 21-24; Denver, CO. Gen. Tech. Rep. WO-70. Washington, DC: U.S. Department of Agriculture Forest Service. 126p.
Publication Series: General Technical Report (GTR)
Station: Washington Office
PDF: Download Publication (192.76 KB)
DescriptionU.S. Department of Agriculture Forest Service Forest Inventory and Analysis plot information is used in many capacities including timber inventories, forest health assessments, and environmental risk analyses. With few exceptions, actual plot locations cannot be revealed to the general public. The public does, however, have access to perturbed plot coordinates. The influence of perturbed plot coordinates on the development of spatial models is unknown. We examined the influence by comparing the accuracies of two spatial models for predicting forest biomass, ordinary kriging and residual kriging. We developed each model using the actual coordinates and 10 independent perturbations of the actual coordinates. We tested for differences in accuracy using analysis of variance. No statistically significant difference in accuracy was found. The results represent only a small portion of the possible outcomes, however. We suggest a simulation study to examine the spatial range of influence that plot coordinate perturbation has on model accuracy.
- 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, email@example.com 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.
CitationCoulston, John W.; Reams, Gregory A.; McRoberts, Ronald E.; Smith, William D. 2006. Practical Considerations When Using Perturbed Forest Inventory Plot Locations To Develop Spatial Models: A Case Study. In: Proceedings of the sixth annual forest inventory and analysis symposium; 2004 September 21-24; Denver, CO. Gen. Tech. Rep. WO-70. Washington, DC: U.S. Department of Agriculture Forest Service. 126p.
- True versus perturbed forest inventory plot locations for modeling: a simulation study
- The effect of blurred plot coordinates on interpolating forest biomass: a case study
- Estimation of crown biomass of Pinus pinaster stands and shrubland above-ground biomass using forest inventory data, remotely sensed imagery and spatial prediction models
XML: View XML