Units of measurement, symbols, significant digits and rounding off
1.1 Units of measurement and symbols
1.2 Significant digits
1.3 Rounding off
1.4 Bias, accuracy and precision
Individual Trees and Logs
2.1 Bole characteristics
2.1.1 Diameter
2.1.2 Height
2.1.3 Bark thickness
2.1.4 Volume
2.1.5 Stem form and taper
2.2 Log characteristics
2.2.1 Diameter
2.2.2 Length
2.2.3 Volume
2.2.4 Weight
2.2.5 Allowance for defect
2.3 Crown characteristics
2.3.1 Width
2.3.2 Depth
2.3.3 Surface area
2.3.4 Volume
2.3.5 Biomass
2.4 Stem analysis
Groups of Trees (Stands)
3.1 Number of trees
3.2 Diameter
3.3 Basal area
3.3.1 Fixed-area plots
3.3.2 Angle count sampling
3.3.3 Advantages and disadvantages of angle count sampling
3.4 Height
3.4.1 Mean height
3.4.2 Predominant height, top height, dominant height
3.4.3 Stand height curve
3.5 Volume
3.6 Crown closure
3.7 Crown biomass
3.8 Growth and increment
References
Appendix 1: Checklist of equipment and materials

[RWG#2] [Copyright] [Title Page] [Next Page] [Last Page]

3.7 CROWN BIOMASS

The weight of tree crowns is important in biomass studies and in assessing the weight of slash left after logging operations. Crown weight can be related to dbhob, site and stand density but only limited information of this type is available for Australian forest stands. Hopefully, the recent development of more efficient methods of estimating the biomass of various tree components (branches, leaves, etc.) using a combination of randomised branch sampling and importance sampling will help redress this deficiency (see Section 2.3.5). 		 

[RWG#2] [Copyright] [Go to Top of Page]
WWW maintenance: Cris.Brack@anu.edu.au
January, 1999.