The TGBS methodology provides a rigorous, site-based framework for assessing whether biodiversity outcomes in restoration and land management projects are credible, appropriate, and improving over time. It was developed by leading organisations in biodiversity science and ecological restoration, and builds on robust, internationally recognised frameworks including the 10 Golden Rules for Reforestation.

 

How the methodology works

The Standard brings together the knowledge of the global botanical community with the expertise of local communities, across initiatives worldwide. Assessments are carried out by locally embedded ecological experts with deep knowledge of their own ecosystems, landscapes, and restoration contexts.

TGBS certifies terrestrial, freshwater, and coastal project sites for their positive biodiversity outcomes. All land management initiatives are eligible, from habitat restoration and tree planting to agroforestry, agricultural land management, and other habitat interventions.

Sites are assessed against eight criteria. To achieve certification, projects must:

  • Select appropriate sites to enhance native biodiversity
  • Enhance protection of existing habitats and biodiversity
  • Protect, restore, and manage biodiversity in consultation and partnership with local communities and other stakeholders
  • Aim to maximise biodiversity recovery through ecosystem restoration
  • Avoid and reduce invasive or potentially invasive species
  • Prioritise the use of native, threatened, and rare species
  • Promote biodiversity and adaptive capacity
  • Implement robust monitoring, evaluation, and adaptive management of biodiversity.

These criteria are grounded in the 10 Golden Rules for Reforestation which set out how to deliver reforestation that promotes biodiversity recovery, carbon absorption, and socio-economic benefits to local communities.

For full details on how sites are scored, the certification tiers, and the assessment process, see the Site-based Certification page.

Download the manual

The full methodology is set out in the TGBS Manual. Complete the form below to download your copy. Available in English, French, Portuguese, and Spanish.

You can unsubscribe at any time by clicking the link in the footer of our emails.
We use Mailchimp as our marketing platform. By agreeing to the above, you acknowledge that your information will be transferred to Mailchimp for processing. See the Mailchimp privacy policy here.