Use of Pilodyn tester for estimating basic density in standing trees of hardwood plantation
The objective of this paper is to introduce and develop a convenient and accurate method for estimating basic density of standing trees by Pilodyn tester. Four hardwood species (i.e., Popidus euramericana cv. ' I-72' , Eucalyptus pellita , E. urophylla × grandis and E. urophylla ) were selected for field test. Pilodyn readings were obtained at breast height of south-north side. The increment core was drilled at the measuring point of Pilodyn for measurement of wood basic density. Subsequently, the relationship between Pilodyn results and basic density was analyzed. The present results indicate that the Pilodyn measurements provide a more reliable and accurate assessment on basic density of outerwood than that of whole radial region for unbarked wood. It was observed that significantly negative correlations between Pilodyn results and outerwood basic density of P . euramericana cv. 'I-72' , E . pellita and E . urophylla × grandis . Poor correlations between Pilodyn results and E. urophylla were showed (P >0.05). For barked wood, basic densities of outerwood and whole radial region of E. pellita and E. urophylla × grandis had higher negative correlations ( P < 0.001) with the Pilodyn measurements than that of unbarked wood, however the poor correlations were showed in E. urophylla ( P >0.05) . Although some limitations of Pilodyn tester affect the accuracy, the debarking method can provide better anticipation for basic density of standing tree. It can be concluded that Pilodyn method is a potential way to be adopted for quick, accurate and cost-effective assessment on wood density of standing tree.
Pilodyn testerhardwood plantationstanding treebasic density
国家科技期刊平台
NSTL
万方数据
维普
