The 2026 "Triple COP" year shows how climate, biodiversity and land degradation are interlinked. Analyse how cities can drive synergies across the Rio Conventions.

In 2026 all three Rio Conventions held their COPs within four months. UNCCD COP17 met in Ulaanbaatar in August [2]. CBD COP17 met in Yerevan in October and carried out the first global review of the Kunming-Montreal Global Biodiversity Framework [3]. UNFCCC COP31 follows in Antalya in November. Cities are where heat, habitat loss and land degradation meet, so they are the natural place to join up the three agendas.

Interlinkages exposed by the Triple COP

• Common drivers: cities produce over 70% of energy-related greenhouse gas emissions [4]. Urban sprawl also eats into wetlands, forests and farmland, so emissions, biodiversity loss and land degradation share the same root cause.
• Convergence in outcomes: UNCCD COP17 adopted an Ulaanbaatar Declaration on municipal land management [2]. The Delhi Declaration 2026 asks for adaptation synergies across the climate, biodiversity and land conventions [1].

How cities can drive synergies

• Nature-based planning: urban forests, lakes and wetlands store carbon, cool heat islands and shelter species. The Delhi Biodiversity Map, launched at the ARISE Cities Forum 2026, brings biodiversity into city planning [1].
• Circularity and zero waste: the Declaration's zero-waste commitment [1] cuts landfill methane and frees land used for dumps.
• Water reuse: Ghaziabad raised ₹150 crore through a green bond for a tertiary sewage treatment plant that supplies treated water to industry [5]. This reduces pressure on freshwater and river ecosystems.
• Integrated governance: localising NDCs alongside local biodiversity plans. 42 of the 67 NDCs reviewed by UN-Habitat mention multilevel governance [4]. The Declaration asks for a "Systematic Joint Space for Multilevel Action" [1].
• South–South learning: 50+ cities from 18+ countries shared practices at the Forum [1].

Constraints to synergy

• Fiscal: municipal own revenue was just 0.43% of GDP in 2017-18 [6], which limits how far cities can co-finance projects.
• Fragmented mandates: the climate pledge (NDC), the biodiversity plan (NBSAP) and land-degradation targets are reported separately at national level. They rarely reach urban local bodies, even though the 12th Schedule gives these bodies urban forestry and environmental protection.

Conclusion

Cities are where the three Rio Conventions meet in practice. One integrated city climate–nature–land plan, real fiscal devolution in the spirit of the 74th Amendment, and help with project preparation can turn the Delhi Declaration into delivery. This would advance SDGs 11, 13 and 15 together.