Table 1 Checklist of recommended guidelines for documenting allometric equations in scientific or technical publications
From: Guidelines for documenting and reporting tree allometric equations
Guideline category | Information to include | |
|---|---|---|
Definitions and concepts | Mandatory | |
□ | Tree components measured (e.g. bole, crown, roots) | |
□ | Type of height measurements (total, commercial) | |
□ | Type of diameter measurements (point of measurement) | |
□ | Units of measures | |
□ | Definitions of variables used | |
Target population and environmental conditions | Mandatory | |
□ | Geographic coordinates (latitude and longitude) and projection system | |
□ | Elevation (in m above sea level) | |
□ | Climate variables: mean annual temperature (°C), mean annual precipitation (mm/year), length of dry season (in month with rainfall <100 mm) | |
□ | Estimated age or successional status | |
Highly recommended | ||
□ | Biographic or ecological classification system used (e.g. Holdridge Life Zone System) | |
□ | Additional climate variables (: e.g. maximum climatological water deficit, seasonality in precipitation and in temperature.) | |
□ | Dominant species | |
□ | Stand structure (e.g. basal area, stand density–number of individuals per unit of area) | |
□ | Phenology (e.g. deciduous, evergreen) | |
□ | Landscape characteristics (slope, aspect) | |
□ | Soil information (texture, depth) | |
Sampling and laboratory analysis | Mandatory | |
□ | Sampling criteria (e.g. diameter classes, species composition or guild, plot-based sampling) | |
□ | Sample size | |
□ | Range of values for diameter, height, wood specific gravity, tree components, etc. | |
□ | Scientific and vernacular (if used) names | |
□ | Methods used in the field or in the laboratory (e.g. method used to measure wood specific gravity) | |
Highly recommended | ||
□ | Number of replicates | |
□ | Instruments used in the field or in the laboratory (e.g. laser model for tree height measurement) | |
□ | Precision of instruments used | |
□ | Calculation procedures | |
Model fitting, prediction and uncertainty | Mandatory | |
□ | Functional form of the model(s) (e.g. power, non-linear, log-log) | |
□ | Model mathematical formula, including form of the error term (multiplicative versus additive) | |
□ | Data transformations (if any, e.g. log transformation) | |
□ | Statistical parameters (R², RSE, mean bias, at a minimum) | |
□ | Parameter values and confidence intervals of the parameters | |
□ | Comparative statistics (e.g. F-value, AIC, BIC, Furnival index) | |
□ | Software (and version) | |
Highly recommended | ||
□ | Analysis scripts | |
□ | Correlation matrix between parameters | |
□ | Correlation between compartments in the case of SUR regressions | |
Meta data | Highly recommended | |
□ | Purpose of the data | |
□ | Dates of project | |
□ | Data owner (contact information) | |
□ | Storage and rights of use | |