BNG: Biodiversity Net Gain
Biodiversity Net Gain (BNG) is an approach that aims to leave the natural environment in a measurably better state than before any development takes place. It focuses on ensuring that development projects contribute positively to biodiversity by enhancing habitats and ecosystems, rather than merely compensating for any loss.
Key Features:
1.Principles:
Enhancement: Projects must enhance biodiversity, leading to a net positive impact.
Measurement: Biodiversity changes are quantified using metrics to ensure gains are real and measurable.
Long-term: Gains should be secured and maintained in the long term, often for at least 30 years.
2.Implementation:
Assessment: Pre-development biodiversity assessments identify existing habitats and their conditions.
Planning: Integrates biodiversity considerations into the planning and design phases of development.
Mitigation Hierarchy: Follows steps to avoid, minimize, restore, and as a last resort, compensate for biodiversity loss.
3.Benefits:
Environmental: Supports the conservation and enhancement of biodiversity.
Economic: Can create sustainable development opportunities and green jobs.
Social: Enhances green spaces, contributing to health and well-being.
4.Legislation and Policy:
Often mandated by national or local planning policies.
In the UK, the Environment Act 2021 requires new developments to achieve a 10% net gain in biodiversity.
5.Application:
Used in various sectors, including housing, infrastructure, and commercial development.
Ensures developments contribute to broader ecological networks and conservation goals.
