The biodiversity paradox: declining conservation discourse amid ecological crisis in global urban policies

Ajishnu Roy 

Despite escalating biodiversity crises, conservation discourse in urban environmental policies has declined, revealing a governance paradox in which ecological urgency is inversely correlated with policy representation. We analyzed 202 urban environmental policies from 85 countries spanning 1984-2025 using computational text analysis (LDA, NMF, hierarchical clustering). The results reveal an 8.3:1 developmental-to-conservation discourse ratio, with sustainable development, transport, and infrastructure dominating 77.7% of policy content, while explicit conservation themes constitute only 9.4%. Biodiversity topics declined 61.9% from the 2010s peak during the 2020s, coinciding precisely with the Kunming-Montreal Global Biodiversity Framework adoption. Colonial language dominance (66.8% English-Spanish-French) marginalizes Indigenous ecological knowledge, while African policies show zero explicit conservation representation, despite critical biodiversity hotspots. These findings demonstrate that sustainability mainstreaming produces ‘discursive dilution’, displacing targeted conservation action and demanding mandatory conservation content thresholds, multilingual policy development and scalar governance coordination.