Skip to Main Content
Potential relative increment (PRI): a new method to empirically derive optimal tree diameter growthAuthor(s): Don C Bragg
Source: Ecological Modelling. 137: 77-92.
Publication Series: Scientific Journal (JRNL)
PDF: Download Publication (477 KB)
DescriptionPotential relative increment (PRI) is a new method to derive optimal diameter growth equations using inventory information from a large public database. Optimal growth equations for 24 species were developed using plot and tree records from several states (Michigan, Minnesota, and Wisconsin) of the North Central US. Most species were represented by thousands of individuals measured across an extensive geographic region that presumably covered a large range of possible environmental conditions. Thus, it was assumed that the individuals growing at the highest rate for each diameter class represented a reasonable estimate of size-specific optimal growth. Comparison of PRI equations among several hardwood and conifer species of differing shade tolerance indicated that unique patterns of optimal diameter growth result. The PRI methodology is similar to other optimal growth models in both shape and trends of predicted growth, but is easier to calculate and offers more flexibility than many other designs.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- 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.
CitationBragg, Don C. 2001. Potential relative increment (PRI): a new method to empirically derive optimal tree diameter growth. Ecological Modelling. 137: 77-92.
- Optimal Diameter Growth Equations for Major Tree Species of the Midsouth
- Differences in Optimal Growth Equations For White Oak in the Interior Highlands
- Optimal Tree Increment Models for the Northeastern United States
XML: View XML