LEADER 02632oam 2200445Ia 450 001 9910695862803321 005 20231011152027.0 035 $a(CKB)5470000002373162 035 $a(OCoLC)70151890 035 $a(EXLCZ)995470000002373162 100 $a20060621d2005 ua 0 101 0 $aeng 135 $aurbn||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aEquations for merchantable volume for subtropical moist and wet forests of Puerto Rico /$fThomas J. Brandeis, Olaf Kuegler, and Steven A. Knowe 210 1$aAsheville, NC :$cU.S. Dept. of Agriculture, Forest Service, Southern Research Station,$d[2005] 215 $a1 online resource (iii, 15 pages) $cdigital, PDF file 225 1 $aResearch paper SRS 300 $a"November 2005"--T.p. verso. 320 $aIncludes bibliographical references (pages 13-14). 330 3 $a"In Puerto Rico, where locally grown woods are primarily used for furniture and crafts production, estimation of wood volume makes it possible to estimate the monetary value of one of the many commodities and services forests provide to society. In the Puerto Rican forest inventories of 1980 and 1990, workers calculated stem volume directly by applying geometric formulae to bole sections of merchantable trees. Field crews recorded several diameter and height measurements along the bole of each tree. If tree volume estimates were based on fewer tree measurements, this would significantly increase field crew productivity. For this reason, tree volume equations have been derived from Puerto Rican forest inventory data by directly calculating stem volume, then creating regression equations that estimate inside and outside bark merchantable stem volume from tree diameter at breast height and total height."--P. [1]. 410 0$aResearch paper SRS;$v39 606 $aForests and forestry$zPuerto Rico$xMeasurement$xMathematical models 606 $aWood$xEconomic aspects$zPuerto Rico$xMathematical models 615 0$aForests and forestry$xMeasurement$xMathematical models. 615 0$aWood$xEconomic aspects$xMathematical models. 700 $aBrandeis$b Thomas James$01387926 701 $aKuegler$b Olaf$01393697 701 $aKnowe$b Steven A.$f1954-$01393698 712 02$aUnited States.$bForest Service.$bSouthern Research Station. 801 0$bORE 801 1$bORE 801 2$bOCLCA 801 2$bGPO 906 $aBOOK 912 $a9910695862803321 996 $aEquations for merchantable volume for subtropical moist and wet forests of Puerto Rico$93450084 997 $aUNINA