Basal Area
Benchmark Value
Scoring Curve
This curve shows how a field measurement for this indicator would score across all available benchmark forms in this context. The scoring engine uses 9 benchmarks together — the OptimalRange form drives the primary score, while 8 guard(s) constrain the result.
Evidence & Context
At sites on Mt Baw Baw, Victoria, which were last subject to a major fire in 1939, the total BA in mature E. pauciflora stands (representing decades of post-fire regrowth and development within a protected area context) were measured as 70 m²/ha (site BB1) and 55 m²/ha (site BB2). Another significant site at Mt Buffalo, the Parks Victoria Office (PVO) plot, which has no recorded fire history (though some evidence of past fire exists in the form of fire scars), exhibited a total BA of 33 m²/ha.
Basal area (BA) is a fundamental metric in forest ecology, quantitatively representing the sum of the cross-sectional areas of all tree stems within a given unit of ground area, typically expressed as square metres per hectare (m²/ha). This measurement is conventionally taken at breast height, which is 1.3 metres above ground level.
This benchmark represents the range of basal area observed in long-unburnt or minimally disturbed Eucalyptus pauciflora woodlands within protected alpine and subalpine areas of Victoria, Australia, indicating mature forest stand structure and high environmental health.
This range is derived from sites in the Victorian Alps that are long-unburnt or have experienced very long fire-free intervals and are managed within protected areas, representing high environmental health and mature stand structures.
Sources (1)
Neyland, M. G., & Cunningham, J. K. (2004). Silvicultural monitoring in uneven-aged highland dry Eucalyptus delegatensis forests in Tasmania. Australian Forestry, 67(1), 6-13.
View SourceSupporting Sources (3)
Additional references from the underlying research that informed this benchmark.
Australia's Eucalypt Forests: Environmental Communication - UQ eSpace - The University of Queensland
View SourceEstimation of Alpine Forest Structural Variables from Imaging ... - MDPI
View SourceThe impact of climate change and wildfire on decadal alpine vegetation dynamics
View Source