Skip to main content

Relative Accuracy of a New Base-Age Invariant Site Index Model

The full text article is temporarily unavailable.

We apologise for the inconvenience. Please try again later.

A new base-age invariant site index model was developed based on the constrained version of the Chapman-Richards function. It was compared with that of Goelz and Burk's (1992) in terms of relative accuracy and average bias across a range of potential base ages. The data format for fitting the above models was also simplified. Comparing the models on a set of white spruce (Picea glauca [Moench] Voss) stem analysis data indicated that the choice of predictor age influences the models' accuracy and bias. Except for very young ages, the new model performed as well as that Goelz and Burk's (1992) model in relative accuracy. For. Sci. 40(2):341-348.
No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Keywords: Biological growth function; average bias; root mean squared errors; the Chapman-Richards growth function

Document Type: Journal Article

Affiliations: Natural Resources Canada, Ontario Region, 1219 Queen Street East, Sault Ste. Marie, Ontario, Canada P6A 5M7

Publication date: 01 May 1994

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more