JD Bontemps
@jdbontemps.bsky.social
Researcher. Silvologist at @IGNFrance, head of Laboratory of Forest Inventory (LIF) Forests, Inventory, Growth, CC, Modelling, Monitoring (views are my own)
Pinned
JD Bontemps
@jdbontemps.bsky.social
· Mar 11
XyloDensMap: a georeferenced dataset for the wood density of 110,000 trees from 156 European species in France - Scientific Data
Scientific Data - XyloDensMap: a georeferenced dataset for the wood density of 110,000 trees from 156 European species in France
www.nature.com
10 years ago, we had this idea of using tree cores of the French NFI @ignfrance.bsky.social to massively measure wood density in a medical scanner @inrae-france.bsky.social. This is now done for +100000 cores in +150 species. Congrats to Leban & colleagues Inrae/NFI ! www.nature.com/articles/s41...
Reposted by JD Bontemps
Un petit bonbon vidéo proposé par Jules Grandin (@julesgrandin.bsky.social) pour bien commencer cette semaine très spéciale pour les personnes passionnées de cartographie #JourDeLaCarte
"Plan Carte - L'IGN épisode 1 - Comment la France se bat contre Google Maps"
www.youtube.com/watch?v=rt2y...
"Plan Carte - L'IGN épisode 1 - Comment la France se bat contre Google Maps"
www.youtube.com/watch?v=rt2y...
Comment la France se bat contre Google Maps
YouTube video by Les Echos
www.youtube.com
February 2, 2026 at 8:08 AM
Un petit bonbon vidéo proposé par Jules Grandin (@julesgrandin.bsky.social) pour bien commencer cette semaine très spéciale pour les personnes passionnées de cartographie #JourDeLaCarte
"Plan Carte - L'IGN épisode 1 - Comment la France se bat contre Google Maps"
www.youtube.com/watch?v=rt2y...
"Plan Carte - L'IGN épisode 1 - Comment la France se bat contre Google Maps"
www.youtube.com/watch?v=rt2y...
Long time no come… always late… so… happy new year !
February 2, 2026 at 6:45 PM
Long time no come… always late… so… happy new year !
Reposted by JD Bontemps
Il n’est même pas à 100 jours !
April 4, 2025 at 6:33 PM
Il n’est même pas à 100 jours !
Enfin @radiofrance.fr ! Il n’est pas question « d’évaluer la « qualité physique » des collégiens »… condition, forme sans doute, mais n’en rajoutons pas ! www.francetvinfo.fr/sports/inter...
INTERVIEW. "Cette mesure nous met en colère et est complètement inutile", conteste le syndicat Snep-FSU après l'annonce de tests de forme physique au collège
Dès la rentrée prochaine, des tests de forme physique seront généralisés à l'échelle nationale chez les collégiens de sixième.
www.francetvinfo.fr
April 3, 2025 at 8:23 PM
Enfin @radiofrance.fr ! Il n’est pas question « d’évaluer la « qualité physique » des collégiens »… condition, forme sans doute, mais n’en rajoutons pas ! www.francetvinfo.fr/sports/inter...
Reposted by JD Bontemps
Multiple phase pollarding, or the Babdook's fingers? Beautiful hornbeams of Epping
March 25, 2025 at 7:30 PM
Multiple phase pollarding, or the Babdook's fingers? Beautiful hornbeams of Epping
10 years of ago, LIF @ignfrance.bsky.social had this idea that investing the monitoring of CC impacts on forests was a major priority. Accordingly - and unfortunately - French forests are now showing a widespread growth decline, as evidenced by Lionel Hertzog www.sciencedirect.com/science/arti...
Turning point in the productivity of western European forests associated with a climate change footprint
•Global changes, such as changing climate, are affecting forest productivity worldwide. Observed trends in productivity are depending on the focal spa…
www.sciencedirect.com
March 11, 2025 at 11:37 AM
10 years of ago, LIF @ignfrance.bsky.social had this idea that investing the monitoring of CC impacts on forests was a major priority. Accordingly - and unfortunately - French forests are now showing a widespread growth decline, as evidenced by Lionel Hertzog www.sciencedirect.com/science/arti...
10 years ago, we had this idea of using tree cores of the French NFI @ignfrance.bsky.social to massively measure wood density in a medical scanner @inrae-france.bsky.social. This is now done for +100000 cores in +150 species. Congrats to Leban & colleagues Inrae/NFI ! www.nature.com/articles/s41...
XyloDensMap: a georeferenced dataset for the wood density of 110,000 trees from 156 European species in France - Scientific Data
Scientific Data - XyloDensMap: a georeferenced dataset for the wood density of 110,000 trees from 156 European species in France
www.nature.com
March 11, 2025 at 11:28 AM
10 years ago, we had this idea of using tree cores of the French NFI @ignfrance.bsky.social to massively measure wood density in a medical scanner @inrae-france.bsky.social. This is now done for +100000 cores in +150 species. Congrats to Leban & colleagues Inrae/NFI ! www.nature.com/articles/s41...
10 years ago, we had this idea of a theoretically grounding the estimators of the French NFI @ignfrance.bsky.social … This is now done, further with new simulation facilities based on digital twins. Congrats to our PhD student Trinh Duong ! academic.oup.com/jssam/articl...
A New Sampling Framework for Spatial Surveys with Application to the French National Forest Inventory
Abstract. The French National Forest Inventory (NFI) employs a two-stage two-phase sampling scheme summarized by the following key steps: first, the territ
academic.oup.com
March 11, 2025 at 11:21 AM
10 years ago, we had this idea of a theoretically grounding the estimators of the French NFI @ignfrance.bsky.social … This is now done, further with new simulation facilities based on digital twins. Congrats to our PhD student Trinh Duong ! academic.oup.com/jssam/articl...
LIF lab happy to celebrate its 10 year anniversary 🎂 @ignfrance.bsky.social #ENSG today during the IGN research days ! Also 40th anniversary of IGN research, that allowed LIF’s birth. Thanks to all contributing energies over these years !
March 11, 2025 at 11:17 AM
LIF lab happy to celebrate its 10 year anniversary 🎂 @ignfrance.bsky.social #ENSG today during the IGN research days ! Also 40th anniversary of IGN research, that allowed LIF’s birth. Thanks to all contributing energies over these years !
www.vendeeglobe.org/medias/10185 bravo ma’am !
Sam Davies à la 13e place de la course | Finish recap | Vendée Globe 2024 | Vendée Globe 2024
Toutes les informations sur le Vendée Globe 2024 : les skippers, le classement, la cartographie et les actualités de ce tour du monde à la voile en solitaire, sans escale et sans assistance.
www.vendeeglobe.org
January 30, 2025 at 10:46 PM
www.vendeeglobe.org/medias/10185 bravo ma’am !
FC Haybes, Ardennes. De l’exploitation forestière sur un territoire pressenti pour une forêt primaire 😂
January 28, 2025 at 10:09 AM
FC Haybes, Ardennes. De l’exploitation forestière sur un territoire pressenti pour une forêt primaire 😂
Reposted by JD Bontemps
Remous au CNRS autour du projet de création de labos d’excellence
www.lemonde.fr/sciences/art...
www.lemonde.fr/sciences/art...
Remous au CNRS autour du projet de création de labos d’excellence
Suite à l’annonce de la création des « Key Labs » , le 12 décembre, par Antoine Petit, président-directeur général du CNRS, une motion de défiance appelant à leur « arrêt immédiat » et à la démission ...
www.lemonde.fr
January 25, 2025 at 10:46 PM
Remous au CNRS autour du projet de création de labos d’excellence
www.lemonde.fr/sciences/art...
www.lemonde.fr/sciences/art...
Reposted by JD Bontemps
❗Finland’s #forests have become a source of carbon, according to the preliminary inventory data from @luke.fi. The change is attributed to increased logging, rising emissions in #peatland forests and declining #carbon sink of mineral soils.
➡️ Read more: www.icos-cp.eu/news-and-eve...
➡️ Read more: www.icos-cp.eu/news-and-eve...
Finland's forests have become a source of carbon
The latest preliminary data from Finland's 2023 greenhouse gas inventory reveals that forests have shifted from being a carbon sink to a carbon source. The latest inventory indicates that forests beca...
www.icos-cp.eu
January 23, 2025 at 11:37 AM
❗Finland’s #forests have become a source of carbon, according to the preliminary inventory data from @luke.fi. The change is attributed to increased logging, rising emissions in #peatland forests and declining #carbon sink of mineral soils.
➡️ Read more: www.icos-cp.eu/news-and-eve...
➡️ Read more: www.icos-cp.eu/news-and-eve...
#FRA2020 Over 1990-2020, the global forest wood stock has remained stationary, moving from 559.7 billion m3 to 556.5 billions. Despite increasing growing stock density in almost all regions of the world, deforestation predominates in influencing the global stock. There is no global forest C sink.
January 22, 2025 at 3:57 PM
#FRA2020 Over 1990-2020, the global forest wood stock has remained stationary, moving from 559.7 billion m3 to 556.5 billions. Despite increasing growing stock density in almost all regions of the world, deforestation predominates in influencing the global stock. There is no global forest C sink.
Just released : Survey design in annual forest inventories #labexARBRE #LIF #IGN annforsci.biomedcentral.com/articles/10....
Take five: about the beat and the bar of annual and 5-year periodic national forest inventories - Annals of Forest Science
Key message International forest reporting processes and increasing forest disturbances delineate new requirements regarding the information delivered by national forest inventories (NFI), with implic...
annforsci.biomedcentral.com
January 8, 2025 at 10:40 PM
Just released : Survey design in annual forest inventories #labexARBRE #LIF #IGN annforsci.biomedcentral.com/articles/10....
Please to announce this nice piece of work at #LIF lab, or how challenges raised by #NFI surveys to survey sampling theory have been handled. Congrats to Trinh Duong, our PhD student funded by U Lorraine & IGN ! academic.oup.com/jssam/advanc...
A New Sampling Framework for Spatial Surveys with Application to the French National Forest Inventory
Abstract. The French National Forest Inventory (NFI) employs a two-stage two-phase sampling scheme summarized by the following key steps: first, the territ
academic.oup.com
December 16, 2024 at 8:25 PM
Please to announce this nice piece of work at #LIF lab, or how challenges raised by #NFI surveys to survey sampling theory have been handled. Congrats to Trinh Duong, our PhD student funded by U Lorraine & IGN ! academic.oup.com/jssam/advanc...
Just like a meeting between matter and antimatter will not produce a peaceful event, an issue may « soon » be that between life and mirror (chirality) life (via @scientificamerican.bsky.social) www.science.org/doi/10.1126/...
Confronting risks of mirror life
Broad discussion is needed to chart a path forward.
www.science.org
December 16, 2024 at 8:13 PM
Just like a meeting between matter and antimatter will not produce a peaceful event, an issue may « soon » be that between life and mirror (chirality) life (via @scientificamerican.bsky.social) www.science.org/doi/10.1126/...
Reposted by JD Bontemps
Canada's new satellite-based forest inventory (#SBFI) uses image segmentation to create detailed, stand-level maps for forest science & monitoring, including tree species and #biomass, available via open access. #Landsat
📜Paper: doi.org/10.1093/fore...
🔗Data: opendata.nfis.org/mapserver/nf...
📜Paper: doi.org/10.1093/fore...
🔗Data: opendata.nfis.org/mapserver/nf...
November 19, 2024 at 9:02 PM
Canada's new satellite-based forest inventory (#SBFI) uses image segmentation to create detailed, stand-level maps for forest science & monitoring, including tree species and #biomass, available via open access. #Landsat
📜Paper: doi.org/10.1093/fore...
🔗Data: opendata.nfis.org/mapserver/nf...
📜Paper: doi.org/10.1093/fore...
🔗Data: opendata.nfis.org/mapserver/nf...
