Les mesures d'échanges des principaux gaz à effet de serre (CO2, N2Oet CH4) entre le sol et l'atmosphère sont des données importantes dans l'étude du fonctionnement des agrosystèmes. Ces données peuvent être mesurées à haute résolution temporelle grâce à des chambres de mesure automatiques qui constituent actuellement la technique de référence. Les...
The data presented in this data paper describe the early growth of cover crop cultivated in growth chamber under non-limiting conditions. Seventeen species of four botanical groups were described after one month of growth. Traits related to plant growth and leaf area development were measured (five traits) and calculated (eight traits). This data s...
Measurement of chlorophyll content using destructive methods is not efficient due to a large number of samples, cost, and time needed. Estimationof chlorophyll content by nondestructive methods using handheld chlorophyll meter may be considered to improve efficiency. This research aimed to determine the formula to convert SPAD-502 and atLEAF CHL PL...
Caractériser la dynamique d'une forêt est essentiel pour la gestion forestière. Les houppiers des arbres forment un élément clé de cette dynamique ; mais, en forêt tropicale, les mesurer n'est pas simple. Cette étude teste l'utilisation d'images aériennes à haute résolution pour estimer la croissance diamétrique des arbres, en intégrant des mesures...
Gérer durablement les forêts tropicales de production nécessite de connaître leur diversité, leur dynamique et l'impact de l'exploitation sur ces caractéristiques. Cette connaissance peut s'obtenir avec de grands dispositifs de suivi permanents dont les arbres sont régulièrement mesurés. Un seul dispositif de ce type existe en Afrique centrale, M'B...
The specificities of the plant environment and its effects on fungal growth are not yet fully explored. Both pH and Eh play a key role during this interaction, but are often studied independently or at different scales. We aimed at investigating whether the methods developed for the joint characterization of the pH and Eh in soil could be transpose...
Soil CO2 flux (Fs) can be measured either manually or automatically. While manual measurements are well suited to capture the spatial variability of Fs, automated measurements are able to capture its temporal variability at fine time scales. The manual method is the most commonly used method to estimate annual carbon budgets. However, such estimate...
With the improvement of remote sensing techniques for forest inventory application such as terrestrial LiDAR, tree volume can now be measured directly, without resorting to allometric equations. However, wood specific gravity (WSG) remains a crucial factor for converting these precise volume measurements into unbiased biomass estimates. In addition...
West Africa is a region in fast transition from climate, demography, and land use perspectives. In this context, the African Monsoon Multidisciplinary Analysis (AMMA)–Couplage de l'Atmosphère Tropicale et du Cycle eco-Hydrologique (CATCH) long-term regional observatory was developed to monitor the impacts of global change on the critical zone of We...
Tropical forests are a key component of the global carbon cycle. Yet, there are still high uncertainties in forest carbon stock and flux estimates, notably because of their spatial and temporal variability across the tropics. Several upcoming spaceborne missions have been designed to address this gap. High-quality ground data are essential for accu...
