Forest Sciences Commons^™

Research Report No. 28, Tree Content And Taper Functions For Planted Loblolly And Slash Pine Trees In East Texas, Update: June 1993, Revised: September 1993, Jaffirin Lapongan, A. Beth Vaughn, J. David Lenhart

Informal Project Reports

In 1987, tree content and tree taper functions for individual live standing planted loblolly and slash pine trees in East Texas were published 1. These equations were developed based on stem analyses of felled trees located adjacent to East Texas Pine Plantation Research Project (ETPPRP) permanent plots throughout East Texas. The 1987 report was based on 65 loblolly and 34 slash pine trees sampled during 1986. For both species, dbh (0) values ranged from about 2-12 inches and total height (H) values varied from about 10-60 feet.

Research Report No. 27, Site Index Equations For Loblolly And Slash Pine Plantations In East Texas, Update: 1993, A. Beth Vaughn, Jaffirin Lapongan, J. David Lenhart

Informal Project Reports

In 1986, equations to estimate site index in loblolly and slash pine plantations in East Texas were published. These equations were developed using data collected from East Texas Pine Plantation Research Project (ETPPRP) permanent plots distributed throughout East Texas. The site index prediction equations were designed to estimate tree height 25 years from planting, ie., index age = 25 years.

In the 1986 study, only data recorded during the first measurement cycle of the ETPPRP (1982- 1984) were available for analysis. Pairs of observed plantation age and a'verage !otal height of the ten tallest trees values were accessible from 150 …