Amazon, Tropical forests, Species, Identity, Carbon, Biomass, DynamicsThe mass of carbon contained in trees is governed by the volume and density of their wood. This represents a challenge to most remote sensing technologies, which typically detect surface structure and parameters related to wood ...
For Guaiacum spp. its burning temperature is in the middle of the peak temperatures for other woods – while its final amount of ash is considerably larger than in the other samples. There is no connection between the wood density and the parameters characterizing the burning process. 展开 ...
The wood density of 17 species by means of modified wood densitiometer was first reported in China. The results showed that wood density components,such as... R Xigen,H Pan,H Li,... - 《Scientia Silvae Sinicae》 被引量: 20发表: 1995年 X-ray microdensitometry of wood: A review of ...
This can be helpful to compare to other density readings found in the database. When examining the wood in question, compare it to other known wood species, and ask yourself these questions: Is the wood dry? Wood from freshly felled trees, or wood that has been stored in an extremely ...
Over the years, different methods have been developed to determine wood density but, only X-ray densitometry has generally found suitable for determining wood density variations in annual rings. This method was first introduced to the field of wood analysis by Polge in 1963, and was further devel...
Wood density (WD) is not only an important parameter to estimate aboveground biomass but also an indicator of timber quality and plant adaptation strategies to stressful conditions (i.e., windthrow, pests, and pathogens). This study had three objectives: (1) to compare WD among seven subtropic...
This model predicts density-dependent declines in diversification rates, but has not been formally tested in any species-level radiation. Here we develop a new conceptual framework that distinguishes density dependence from alternative processes that also produce temporally declining diversification, and we...
摘要: Basic density ; Longitudinal shrinkage ; Tension wood ; opposite wood ; gravitational stimulus 关键词: Basic density Longitudinal shrinkage Tension wood opposite wood gravitational stimulus DOI: 10.1139/cjfr-31-10-1676 被引量: 76 年份: 2001 收藏...
(2016) showed that the rate of wood (Norway spruce) decay is dependent on its density (high or low) and most likely related to the enzymatic preferences of the fungi (Antrodia gossypium, Phlebiopsis gigantea strains from Finland and the United Kingdom (UK), Heterobasidion parviporum strains...
Timber:C. equisetifoliayields a heavyhardwoodwith an air density of 900–1000kg/cubic m.Heartwoodis pale red, pale brown to dark red-brown, moderately to sharply differentiate from thesapwood, which is yellowish or pale yellow-brown with a pink tinge. Wood is hard to very hard and strong....