Using Biophysical Parameter from SPOT-5 to Estimate Yield in Wang Chin Teak Plantation

摘要

In term of silviculture, the science of fo rest plantation, the yield estim ate is very important. In the past, the yield estim ation of forest plantation can be executed by the field method only. However, in Thailand, the rem ote sensing becom es more and m ore technique for yield estimation and prediction of forest plantation.This study, the biophysical, volu me and Leaf Area Index (LAI), param eters of teak plantation were collected from 3 teak sam ple plots with 20, 25 and 30 years old in W ang Chin teak plantation, Phrae province and the Crown Cover Fraction (CCF) of the study area was extracted from SPOT-5 imageries. Conse quently, the biophysical param eters of te ak plantation and CCF were related by using re gression technique and the Yield Estim ation Model of teak plantation has been developed.The correlation between the bi ophysical parameters of teak plantation and CCF has show as the polynomial degree 3rd with highly correlation coefficient (R~2)0.82, 0.71 and 0.75 from 3 teak sam ple plots with 20, 25 and 30 ye ars old. Finally the e quation volume of teak are calculate from equation between volume and LAI. The equation has R~3 0.88, 0.85 and 0.72 and timber volume, as follow 16,723.4 m~3, 24,830.4 m~3and 21,284.0 m~3 from 20, 25 and 30 years of teak plantation, respectively.