We use some essential cookies to make this website work.
We’d like to set additional cookies to understand how you use forestresearch.gov.uk, remember your settings and improve our services.
Preparing to search
This project measures the carbon dioxide (CO2) released from the forest floor at the Straits Inclosure in Alice Holt Forest. This work supports our research into understanding forest carbon balances and the effects of woodland management.
Here is a short video summarising this work.
Provide data on forest floor CO2 release for woodland carbon balance modelling (for example, to assess the possible climate change impacts).
Two sets of measurements are collected in this project. At five points in the forest the soil CO2 release from the forest soil (without leaf litter) is measured. From a further five points the CO2 from the combined soil and leaf litter is measured. These measurements are taken weekly using a LI-COR Instruments LI-8100A analyser and 20 cm survey chamber.
The results from this long-term monitoring of forest soil CO2 fluxes have shown that there is a distinct annual cycle. Soil CO2 fluxes are larger in the summer and smaller in the winter, probably driven by the temperature and soil moisture, and by changes in root activity.
Previous studies at this site have also measured the CO2 released from the forest floor. Heinemeyer et al. (2012) found that the annual rate of CO2 released was 740 ± 43 g C m-2 yr-1 and Yamulki & Morison (2017) reported 894 g C m-2 yr-1.
The gross rate at which the forest in the Straits Inclosure took up CO2 (1999-2010) was 2034 ± 145 g C m-2 yr-1. In the same period, the rate of CO2 released by the Straits Inclosure was 1548 g C m-2 yr-1(Wilkinson et al., 2012). The previous studies have therefore shown that the CO2 released from the soil is equivalent to 48-58% of the total CO2 leaving this forest.
The graph above shows the mean CO2 released from the soil (blue) and the soil and litter combined (green), as measured by this project since 2013. Error bars are ± 1 standard error.
The current project is continuing to add measurements to our dataset. These measurements, in addition to those from the eddy covariance tower, will help improve our understanding of the amount of CO2 coming from the soil and what drives the processes that produce it.
This project started in 2013 and is ongoing.
This project is part of the Assessing Resilience research programme.
The project supports FC policy by investigating how forests help us address climate change, and policies on sustainable forest management. This includes those addressing protecting forests and the ecosystem services they provide, such as carbon storage in the soils, carbon sequestration in growing trees, and wood provision for timber and biomass markets. The work addresses knowledge gaps about quantifying the carbon balance of forests and the effect of disturbance, and helps underpin the values used in the Woodland Carbon Code.
Cookies are files saved on your phone, tablet or computer when you visit a website.
We use 3 types of cookie. You can choose which cookies you're happy for us to use.
These essential cookies do things like remember your progress through a form. They always need to be on.
We use Google Analytics to measure how you use the website so we can improve it based on user needs. Google Analytics sets cookies that store anonymised information about: how you got to the site the pages you visit on forestresearch.gov.uk and how long you spend on each page what you click on while you're visiting the site
Some forestresearch.gov.uk pages may contain content from other sites, like YouTube or Flickr, which may set their own cookies. These sites are sometimes called ‘third party’ services. This tells us how many people are seeing the content and whether it’s useful.