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 11 benchmarks together — the OptimalRange form drives the primary score, while 10 guard(s) constrain the result.
Evidence & Context
A basal area of < 5 m²/ha is proposed as the lower critical threshold, below which the system is not considered to be delivering high ecological function in a systemic way.
Basal area, defined as the cross-sectional area of tree stems at breast height per unit of land area.
This benchmark defines the lower critical threshold for basal area in agricultural crop production, below which ecosystem function is impaired and the system fails to deliver high ecological function.
Based on Australian bioeconomic models, farm forestry guides, and field measurements indicating significant competition and lack of systemic ecosystem services below this value.
Sources (3)
Managing competition between forestry plants. - Forest Learning
View SourceEcosystem Services from agroforestry systems in Australia - Southern Cross University
View SourceThe Bioeconomic Potential for Agroforestry in Australia's Northern Grazing Systems
View SourceSupporting Sources (4)
Additional references from the underlying research that informed this benchmark.
Reforestation in the Tropics and Subtropics of Australia
View SourceTree-grass balance | Meat & Livestock Australia - MLA, accessed July 17, 2025,
View Source
Typology of coffee-based agroforestry systems in the semi-deciduous forest zone of Togo (West Africa)
View SourceTypology of coffee-based agroforestry systems in the semi-deciduous forest zone of Togo (West Africa) - SciSpace, accessed July 17, 2025,
View Source