Know more

Our use of cookies

Cookies are a set of data stored on a user’s device when the user browses a web site. The data is in a file containing an ID number, the name of the server which deposited it and, in some cases, an expiry date. We use cookies to record information about your visit, language of preference, and other parameters on the site in order to optimise your next visit and make the site even more useful to you.

To improve your experience, we use cookies to store certain browsing information and provide secure navigation, and to collect statistics with a view to improve the site’s features. For a complete list of the cookies we use, download “Ghostery”, a free plug-in for browsers which can detect, and, in some cases, block cookies.

Ghostery is available here for free:

You can also visit the CNIL web site for instructions on how to configure your browser to manage cookie storage on your device.

In the case of third-party advertising cookies, you can also visit the following site:, offered by digital advertising professionals within the European Digital Advertising Alliance (EDAA). From the site, you can deny or accept the cookies used by advertising professionals who are members.

It is also possible to block certain third-party cookies directly via publishers:

Cookie type

Means of blocking

Analytical and performance cookies

Google Analytics

Targeted advertising cookies


The following types of cookies may be used on our websites:

Mandatory cookies

Functional cookies

Social media and advertising cookies

These cookies are needed to ensure the proper functioning of the site and cannot be disabled. They help ensure a secure connection and the basic availability of our website.

These cookies allow us to analyse site use in order to measure and optimise performance. They allow us to store your sign-in information and display the different components of our website in a more coherent way.

These cookies are used by advertising agencies such as Google and by social media sites such as LinkedIn and Facebook. Among other things, they allow pages to be shared on social media, the posting of comments, and the publication (on our site or elsewhere) of ads that reflect your centres of interest.

Our EZPublish content management system (CMS) uses CAS and PHP session cookies and the New Relic cookie for monitoring purposes (IP, response times).

These cookies are deleted at the end of the browsing session (when you log off or close your browser window)

Our EZPublish content management system (CMS) uses the XiTi cookie to measure traffic. Our service provider is AT Internet. This company stores data (IPs, date and time of access, length of the visit and pages viewed) for six months.

Our EZPublish content management system (CMS) does not use this type of cookie.

For more information about the cookies we use, contact INRA’s Data Protection Officer by email at or by post at:

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

Dernière mise à jour : Mai 2018

Menu Logo Principal AgroParisTech logo Labex Arbre logo

Home page


photo Jana Dlouha
CR2 INRA, Growth, Yield and Wood Quality Research Team (CPQB)

• Contact :

Jana Dlouha
LERFoB (Forest-Wood Research Unit)
UMR INRA-AgroParisTech 1092
Growth, Yield and Wood Quality Research Team
Centre INRA de Nancy
F54280 CHAMPENOUX (France)
Phone : +33(0)

• Scientific interest:

   ►Research Topic

  • Ecological determinism of wood functions and properties.

Research of structural determinants at different scales (from cell wall level to heterogeneous tissue level) of observed co-variations between macroscopic properties, physical and biomechanical, of wood viewed as a functional tissue in a living tree and industrial material. Development of simple and explanatory physical models able to interact with models issued from ecology, physiology and dendrometry. Experimental evaluation of mechanical properties at macroscale (for the moment) and tissue level (to come).

  • Plasticity of ontogenetic variations of wood mechanical properties

Functional and adaptative approach of wood biomechanical properties and their relation to ecology and sylvicultural treatments.

Integrative approach : including structural effects in the evaluation of biomechanical performances at the whole tree level.

Measuring of mechanical properties (modulus of elasticity, strain at break) of diverse wood tissues on small macroscopic wood samples in green state.

• Projects :


  •  WADE « Wood Acclimation to Disturbed Environments »

• Recent publications:

- Dlouha, J., Suryanegara, L., Yano, H. (2014). Cellulose nanofibre–poly(lactic acid) microcellular foams exhibiting high tensile toughness. Reactive & Functional Polymers.

- Badel, E., Fournier, M., Moulia, B., Bonnesoeur, V., Constant, T., Ningre, F., Ruelle, J., Dlouha, J., Decourteix, M., Fournier-Leblanc, N., Julien, JL., Olivar, J. (2013). Responses of cambial growth and wood properties to winds.

- Fajriani, E., Ruelle, J., Dlouha, J., Fournier, M., Hadi, YS., Darmawan, W. (2013). Radial variation of wood properties of Sengon (Paraserianthes falcataria) and Jabon (Anthocephalus cadamba). Journal of the Indian Academy of Wood Science. Vol. 10. 110-117.-Fournier M., Dlouhá J., Jaouen G. & Almeras T. (2013). Integrative biomechanics for tree ecology: beyond wood density and strength. Journal of Experimental Botany. Vol. 64. 4793-4815.

- Dlouhá, J., Yano, H. (2012). Role of cellulose nanofibres in the supercritical foaming of polylactic acid and their effect on the foam morphology. Soft Matter. vol. 8 (33). p. 8704-8713

- Dlouhá, J., Clair, B. and Alméras, T. (2011). Representativeness of wood biomechanical properties measured after storage in different conditions. Trees: Structure and function. vol 6 (3). p. 695-703.

- Dlouhá, J., Clair, B., Horáček P. and Gril, J. (2009). Prediction of long-term behaviour of green wood based on time-temperature equivalency. Holzforschung. vol. 63 (3). 327-333.

- Dlouhá, J., Gril, J., Clair, B. and Alméras, T. (2009). Evidence and modelling of physical aging in green wood. Rheologica Acta.vol. 48 (3), p. 333-342.

- Dlouhá, J., Alméras, T., Clair, B., Gril, J., Horáček, P. (2008). Biomechanical performances of trees in the phase of active reorientation. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis. 2008. vol LVI. p. 39- 45.