Vegetation Data, Direct Measure of Stems, Alice Mulga SuperSite, Core 1 ha, 2014

This dataset contains diameter at breast height (1.3 m) and tree height measured in the core plot (Focal Hectare) at the Alice Springs SuperSite (AS3). The core plot is located within the footprint of the Alice Springs Mulga OzFlux tower. The objective of this study is to estimate the live, aboveground biomass in the Mulga woodland. Live biomass is estimated from allometric scaling of tree height (H) and diameter at breast height (DBH) or basal area (BA). Measurements were collected using a DBH tape, callipers and a laser rangefinder. Measurements were made during a brief break between summer rainstorms, thereby limiting the number of trees that could be measured. Thus, 10x10 m sub-plots were chosen at random, from which the timing and conditions permitted complete measurement of six sub-plots. All trees that were measured have been located by GPS, tagged, and labelled for return measurements. Altogether, DBH (200 stems that were larger than 1 cm diameter) was measured in 86 trees. Another 13 trees were measured that were either dead or did not have any stems that were larger than 1 cm diameter at BH. Amongst the 86 trees in the DBH study, 445 dead stems that were larger than 1 cm diameter were counted. Of the 200 stems, the size distribution was: 1–5 cm diameter: 154 stems 5–10 cm diameter: 27 stems >10 cm diameter: 19 stems