Know more

About cookies

What is a "cookie"?

A "cookie" is a piece of information, usually small and identified by a name, which may be sent to your browser by a website you are visiting. Your web browser will store it for a period of time, and send it back to the web server each time you log on again.

Different types of cookies are placed on the sites:

  • Cookies strictly necessary for the proper functioning of the site
  • Cookies deposited by third party sites to improve the interactivity of the site, to collect statistics

Learn more about cookies and how they work

The different types of cookies used on this site

Cookies strictly necessary for the site to function

These cookies allow the main services of the site to function optimally. You can technically block them using your browser settings but your experience on the site may be degraded.

Furthermore, you have the possibility of opposing the use of audience measurement tracers strictly necessary for the functioning and current administration of the website in the cookie management window accessible via the link located in the footer of the site.

Technical cookies

Name of the cookie


Shelf life

CAS and PHP session cookies

Login credentials, session security



Saving your cookie consent choices

12 months

Audience measurement cookies (AT Internet)

Name of the cookie


Shelf life


Trace the visitor's route in order to establish visit statistics.

13 months


Store the anonymous ID of the visitor who starts the first time he visits the site

13 months


Identify the numbers (unique identifiers of a site) seen by the visitor and store the visitor's identifiers.

13 months

About the AT Internet audience measurement tool :

AT Internet's audience measurement tool Analytics is deployed on this site in order to obtain information on visitors' navigation and to improve its use.

The French data protection authority (CNIL) has granted an exemption to AT Internet's Web Analytics cookie. This tool is thus exempt from the collection of the Internet user's consent with regard to the deposit of analytics cookies. However, you can refuse the deposit of these cookies via the cookie management panel.

Good to know:

  • The data collected are not cross-checked with other processing operations
  • The deposited cookie is only used to produce anonymous statistics
  • The cookie does not allow the user's navigation on other sites to be tracked.

Third party cookies to improve the interactivity of the site

This site relies on certain services provided by third parties which allow :

  • to offer interactive content;
  • improve usability and facilitate the sharing of content on social networks;
  • view videos and animated presentations directly on our website;
  • protect form entries from robots;
  • monitor the performance of the site.

These third parties will collect and use your browsing data for their own purposes.

How to accept or reject cookies

When you start browsing an eZpublish site, the appearance of the "cookies" banner allows you to accept or refuse all the cookies we use. This banner will be displayed as long as you have not made a choice, even if you are browsing on another page of the site.

You can change your choices at any time by clicking on the "Cookie Management" link.

You can manage these cookies in your browser. Here are the procedures to follow: Firefox; Chrome; Explorer; Safari; Opera

For more information about the cookies we use, you can contact INRAE's Data Protection Officer by email at or by post at :


24, chemin de Borde Rouge -Auzeville - CS52627 31326 Castanet Tolosan cedex - France

Last update: May 2021

Menu Logo Principal IN-SYLVA France ONF FCBA CIRAD CNPF OFB Université de Rouen

Home page

INRAE Cedar Silviculture Network

INRAE Cedar Silviculture Network
Coordination : INRAE. Unité de Recherches Écologie des Forêts méditerranéennes UR629. Centre de recherche Provence-Alpes-Côte d’Azur.
Trials spread over the south-eastern quarter of France.

Sylviculture Cèdre INRA


The INRAE Cedar Silviculture Network is a network of semi-permanent plots and silviculture experiments that concern a single species: The Atlas Cedar (Cedrus atlantica Manetti). The network consists of:

  1. Semi-permanent plots, often in older stands subjected to silvicultural management. In a few cases, there may be two or three plots on the same site with either a control plot or several different thinning intensities. There is little deviation from current standard management practices.
  2. More recent experimental plots: in addition to a control plot, different silvicultural treatments are tested, some of which deviate considerably from current practices.


17 semi-permanent plots on 3.5 ha and 23 plots distributed among 3 experimental sites on 10.7 ha. Total: 14.2 ha.

Geographical distribution:

Southeastern quarter of France. Mediterranean region. Departments Adèche, Aude, Drôme, Gard, Vaucluse (see map above).

Date of installation:

From 1923 to 2001 for the semi-permanent plots. From 1989 to 1997 for the experimental sites.


  1. To study the influence of silvicultural practices and competition on the tree growth and wood production in regular cedar stands. To develop growth models.
  2. To study the influence of silvicultural practices on tree behaviour (growth, production and health status) in the light of climatic and drought events. To develop adaptive silviculture practices in a context of climate change.
Services offer

The active sites are still being monitored. The data collected in the plots and experimental sites mainly include circumference at 1.30m in height and health status records for all trees. Total, and occasionally base height of the living canopy are measured on a sub-sample of identified trees. These measurements are generally taken every 5 to 10 years and at each thinning.

After each measurement campaign, calculations are made and a report is produced.


The network is managed by a research engineer. Measurements are carried out by a team of 2-3 technicians.

Operations and data access

The sites are open and the data are available to researchers from other teams within the framework of formal collaborative projects or research agreements in order to help to answer research or technical development questions. The sites are also open to teachers and trainers for all levels of training. Other access needs are discussed on a case-by-case basis. Accompanied field visits may also be organised for training and knowledge transfer; conditions are defined with the applicants.

Data access and cost

To be defined on a case-by-case basis, for data formatting and field technical support.

Available measurements

No particular devices.

Published data sets

Courbet, François, 2021, "Tree size data from three semi-permanent plots of the INRAE Cedar Silviculture network",, Portail Data INRAE, V1,