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 16 benchmarks together — the OptimalRange form drives the primary score, while 15 guard(s) constrain the result.
Contributing Benchmarks
Evidence & Context
A basal area within a shelterbelt exceeding 35−40 m²/ha is highly likely to create a zone of competition so severe that it becomes economically detrimental to the adjacent cropping enterprise.
Basal area of trees in agricultural cropping systems
This benchmark represents the upper detrimental threshold for basal area in agricultural cropping systems, beyond which economic viability is compromised due to competition.
Based on evidence of significant crop yield suppression due to competition for water and light at high basal area densities.
Sources (1)
Shelterbelt species composition and age determine structure: Consequences for ecosystem services
View SourceSupporting Sources (2)
Additional references from the underlying research that informed this benchmark.
Soil moisture release curves—What they are. Why you need them. How to use them., accessed May 15, 2025,
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Conservation Advice for Lowland Grassy Woodland in the South East Corner Bioregion, accessed August 6, 2025
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