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 19 benchmarks together — the OptimalRange form drives the primary score, while 18 guard(s) constrain the result.
Contributing Benchmarks
Evidence & Context
Proposed Upper Detrimental Threshold: > 25 m²/ha
Basal area, defined as the cross-sectional area of tree stems at breast height per unit of land (e.g., m²/ha)
This benchmark defines the upper detrimental basal area threshold above which excessive competition causes agricultural decline in crop production systems on Australian tropical/subtropical maritime islands.
Based on forestry stocking guides and ecological understanding of competition effects in agroforestry systems
Sources (1)
"A Review of Traditional Agroforestry in Micronesia" (Manner, 1992)
View SourceSupporting Sources (5)
Additional references from the underlying research that informed this benchmark.
"Basal area (m²/ha) for different tropical rain forests of the Far East" (Jaffré & Veillon, in Adansonia, 2021)
View SourceAustralian dryland soils are acidic and nutrient-depleted, and have unique microbial communities compared with other drylands - PMC, accessed July 21, 2025
View Source
Forestry stocking guides for temperate hardwood stands
View Source
UN Food and Agriculture Organization (FAO) definition of forest canopy cover minimum
View SourceStudy in a South Indian agricultural landscape on vegetation cover and crop yield
View Source