2.5 Monitoring
- Full Monitoring and Verification
- Basic Monitoring and Verification (projects where the Small Project Calculator was used)
- Basic Monitoring and Self-Assessment
Who can undertake the assessment?
The science behind the assessment of carbon sequestration
Requirement
- Projects should be reviewed at year 5 and then at least every 10 years after the project start date (for single projects) or the group start date (for groups), using one of the options set out below. Basic Monitoring & verification (of projects which used the Small Projects Calculator) and Basic Monitoring and Self-Assessment shall only be undertaken in a limited number of circumstances, set out below.
- Projects shall begin monitoring 12 months prior to each verification due date to allow time for verification to be carried out by the due date. If there are extenuating circumstances for a delay, the project shall seek the approval of the WCC Secretariat. If approval is granted, a Verification Extension Approval shall be uploaded to the UK Land Carbon Registry.
- Corrective actions shall be undertaken if establishment and/or tree growth and carbon sequestration rates do not meet predicted and validated amounts.
The monitoring plan will be checked at validation. The Project Progress Report and relevant Monitoring Report will be checked at each verification.
Monitoring Plan
Each project needs to have a monitoring plan in place before validation. Monitoring will enable the project to quantify and document the progress of carbon sequestration as well as ensure that the project is being managed to the UK Forestry Standard. The monitoring plan shall be set out in the Project Design Document.
When to monitor
Projects developers need to undertake the field survey 6-12 months (but no more than 12 months, except in exceptional circumstances) prior to each verification due-date to:
- demonstrate successful woodland establishment at year 5, and
- assess actual tree growth and carbon sequestration rates from year 15 onwards.
Starting the monitoring 6-12 months before the due date allows sufficient time for verification to be completed before the verification due-date.
Monitoring at year-5
The first verification due-date is 5 years after the start date (For those projects validated earlier than July 2013, timing of the first verification may differ).
The purpose of monitoring at year 5 is to ensure that the site has been suitably stocked and established (as set out in the PDD) and that the trees/ site are in good health with the potential to grow and sequester carbon as predicted. All projects should use the WCC Survey Protocol V2.1 March 2021 (.pdf) which sets out requirements of the year 5 survey. It assesses:
- Tree stocking density through the number of seedlings and saplings of each species
- Actual species mix
- Tree health, tree damage, weed growth and tree protection (shelters/fencing)
The WCC Year 5 Monitoring Report V2.1 March 2021 (.xlsx) provides template sheets for data collection as well as a summary sheet which calculates stocking density from the results of the field survey. You will submit a Project Progress Report V2.1 March 2021 (.docx) and the Year 5 Monitoring Report, with site-based photos to your chosen verifier. Upon verification the predicted number of PIUs will be converted to WCUs with no under or over delivery.
At year 5, projects will be verified to a ‘limited’ level of assurance.
Monitoring from year 15 onwards
Verification due-dates for subsequent assessments will be 15 years after the project start date and then at least 10-yearly up to the project end date. There are three options for monitoring:
Full monitoring and 3rd party verification
The purpose of monitoring from year 15 onwards is to assess the carbon stock of the site and to confirm that the trees/site are in good health with the potential to grow and sequester carbon as predicted. This involves carrying out a plot-based mensuration survey for year 15 onwards following the WCC Survey Protocol V2.1 March 2021 (pdf). It assesses:
- Carbon stock
- Tree health
The WCC Year 15+ Monitoring Report Pilot V2.1 March 2021 (xlsx) provides template sheets for data collection as well as summary sheets to calculate the carbon stock of the woodland. You will submit a Project Progress Report V2.1 March 2021 (docx) and WCC Year 15+ Monitoring Report with site-based photos to your chosen verifier. Upon verification, your units realised will be converted from PIUs to WCUs.
- If your survey results confirm more carbon is stored onsite than predicted, then your verification status will be ‘Green’ and you will be issued more WCUs, in line with your survey results.
- If your survey results confirm less carbon is stored onsite than predicted, then your verification status will be ‘Red’, and any undelivered PIUs will be cancelled.
- If the verifier’s assessment is that there is real concern for the ability of your project to sequester the predicted amount in future vintages, you will be required to re-assess your carbon prediction and PIUs issued for future vintages will be cancelled.
Projects which undertake full monitoring will be verified to a ‘reasonable’ level of assurance.
Basic monitoring and 3rd party verification (for projects that used the Small Project Calculator)
For projects that used the Small Project Calculator, Basic Monitoring can be carried out to assess the carbon stock of the site and to confirm that the trees/ site are in good health. You will submit a Project Progress Report V2.1 March 2021 (docx) and Basic Monitoring Report for verification. Upon verification, it will be assumed that the predicted amount of carbon dioxide has been sequestered, and your units will be converted from PIU to WCU with no under- or over-delivery.
You can only undertake basic monitoring and 3rd party verification if:
- Your project is at least 15 years old.
- You used the ‘Small woods calculator’ at validation.
- It’s not the last monitoring period of your project. At the last monitoring period you will be required to do Full Monitoring and 3rd party verification.
- There have been no major changes to the project since the last verification (area, management, ownership, health etc.).
The verifier can request other sources of information if any source supplied is not clear. If the verifier still has any concerns about the growth or health of the project, they can request that you conduct Full Monitoring prior to verification of your small project.
Small projects which undertake basic monitoring will be verified to a ‘limited’ level of assurance.
Basic monitoring and Self-Assessment
Self-Assessment involves carrying out Basic Monitoring, and uploading your Basic Monitoring Report and Project Progress Report to the registry without 3rd party verification. There will be a basic check of the evidence submitted by the WCC Secretariat and your project will have the status ‘Self-Assessed’. If you Self-Assess, your carbon units will remain as PIUs and won’t be converted to WCUs, so they still can’t be used by buyers to report against their emissions.
You can only undertake Self-Assessment from year 15 onwards if:
- Your latest verification received a ‘Green’ status (If a group, all projects have to be ‘green’ status) and you don’t have any concerns about the growth and health of your project.
- Your latest assessment was a Verification, not a Self-Assessment.
- It’s not the last monitoring period of your project. At the last monitoring period you will be required to do Full Monitoring and 3rd party verification.
- There have been no major changes to the project (area, management, ownership, health etc.).
This email address is being protected from spambots. You need JavaScript enabled to view it. if you intend to Self-Assess, and we will check you meet the criteria.
When reviewing a ‘Self-Assessed’ project, the WCC Secretariat can request other sources of information if any source supplied is not clear. If the WCC Secretariat are content with the information provided, they will approve the project as ‘Self-Assessed’. If the WCC Secretariat still have any concerns about the growth and health of a project that is submitted as ‘Self-Assessed’, the WCC Secretariat can require that Full Monitoring and 3rd party verification is undertaken.
Self-Assessed projects are not verified. No PIUs will be converted to WCUs.
Basic Monitoring Requirements
- Complete the Project Progress Report which confirms the project still meets the standard and is still on track.
- Project developer prepares a Basic Monitoring Report containing imagery of the site as follows, to confirm the health, growth and extent of the woodland. Project developers should check proposed aerial imagery with the WCC Secretariat (for Self-Assessment) or verifier (for Verification):
- Representative geotagged site-based photos (min 3-4, more if the project consists of lots of separate compartments) AND
- One form of aerial image, with the boundary of the project and planted area overlaid, to confirm stocking over whole site. This could be:
- Plane-based aerial photos (these are available map browsers such as):
- England’s Map Browser and Land Information Search
- Scotland’s Land Information Search in Scotland’s Environment Web
- Natural Resources Wales Interactive Mapper
- My Forest (You can upload an existing shapefile and overlay it on aerial photography)
- The Land App (access Bing imagery or Mapbox imagery)
- MAGIC
- Scotland’s Environment Web
- Google Maps or Bing Maps (although aerial photography can be older).
- Satellite-based optical data (Copernicus/Sentinel now produces images every 6 days. This is currently available to Forestry Commission/Forest Research/Scottish Forestry internally. Also available from private sources).
- Drone-based video/photos
- Other image sources as they become available.
- Plane-based aerial photos (these are available map browsers such as):
- An updated map (with planted/open/existing woodland and project boundary) if the net area apparent on aerial image is at odds with the original map. This should follow WCC Mapping Guidance. If there is greater than a 5% disparity in apparent net area, then Full Monitoring should be undertaken.
Who can undertake the assessment?
The year 5 or year 15 survey can be carried out by a suitably experienced landowner, project developer or independent third party. The verifier may also offer to carry out the field survey on the project developer's behalf. The verification body will always visit the site at the year 5 verification but will do so on a risk-based approach for subsequent verifications. Monitoring carried out by an independent third party could be less likely to require a verification body field visit, however project developers should contact their chosen Verification Body to check the suitability of an independent surveyor prior to carrying out the survey.
The science behind the assessment of carbon
The WCC Survey Protocol is a subset of methods outlined in the WCC Carbon Assessment Protocol (pdf). Methods of calculating the tree stem volume are detailed further in the Forest Mensuration Handbook. The methods of estimating the mass of carbon from the tree volume are given in The Carbon Content of Trees (pdf) and other Forestry Commission publications such as:
- Forests, Carbon and Climate Change: the UK contribution (pdf).
- Understanding the carbon and greenhouse gas balance of forests in Britain
Future Developments
- We will develop a soil carbon assessment protocol.
- We will continue to investigate alternative methods of carbon assessment through measurement instruments on satellites, planes, drones or ground-based terrestrial laser scanning. We will add to the protocol when such methods are acceptable and cost effective.
