Beyond the Green Image: A Visual-Documentary Framework for Evaluating Nature-Positive Evidence in Architecture

As architecture increasingly adopts biodiversity and nature-positive terminology, visually prominent greenness is often treated as evidence of ecological value. This chapter develops a visual-documentary framework that separates architectural visibility from ecological verifiability. Twelve international buildings comprising 16 ecological subsystems were examined through criterion-based purposive sampling. Visual Greenness Prominence was assessed independently from nine ecological criteria, while evidence level, source quality, baseline status and evidence architecture were coded separately. The analysis shows that high visual greenness is neither necessary nor sufficient for strong verified ecological response. The principal gap occurred between ecological provision and demonstrated outcome: habitat provision, heterogeneity and natural-process integration were common, but none of the subsystems demonstrated the full combination of broad quantified biodiversity improvement, a defensible baseline or counterfactual, and evidence sufficient to establish baseline- or counterfactual-relative positive biodiversity change. The framework therefore calibrates ecological claims to the quality and completeness of the evidence supporting them.