Parametrization of surface models (SVAT and vegetation), intra and inter-specific variability of vegetation growth and physiological functionning (herbaceous and woody) in response to the variation of rainfall and soil moisture in Gourma (Mali). Interspecific variability of root dynamics. Documentation of the soil characteristics (texture, characteristic curves, infiltration...). These measurements are required for a better parameterization of the response of vegetation and soils to climatic forcings and for water fluxes simulation. These data will provide the basic parameters for the initialization of the surface-atmosphere exchange models. Links with atmospheric chemistry (soil emissions and deposits).
Strategie d'observation
1) seasonal dynamics of the vegetation cover, 2) seasonal monitoring of the leaf water potential: observations every 10/15 days in rainy season over the principal woody species, and every month during the dry season, on the supersite 3) specific measurements during the period of maximal cover (July-August) on the intensive site of Agoufou: stomatal conductance, leaf water potential, and photosynthetic assimilation (comparison of species in stable conditions or daily monitoring by species, in natural conditions), specific response curves of photosynthetic assimilation to the light, species screening, effects of water stress and dry sequences dr 4) CO2 measurements on soil and vegetation and relationship with NOx emission , measurements on specific herbaceous individuals. 5) root profiles, soil and plant analyses.
Description de l'instrument
No information available
Information géographique
Site 1
Mot-clé de localistion
CONTINENT > AFRICA > WESTERN AFRICA > MALI
Site
Hombori supersite
Type de plateforme
In Situ Land-based Platforms > GROUND STATIONS
Longitude minimale (°)
-1.558
Longitude maximale (°)
-1.398
Latitude maximale (°)
15.504
Latitude minimale (°)
15.218
Altitude min
279
Altitude max
330
Paramètres mesurés
Paramètre mesuré 1
Nom du paramètre
Phenological State/Fruiting State
Mot-clé du paramètre
Biosphere > Vegetation
Unité
code
Date de début (yyyy-mm-dd)
2005-04-21
Date de fin (yyyy-mm-dd)
2007-07-26
Précision du capteur / Incertitude
Paramètre mesuré 2
Nom du paramètre
Phenological State/Leafing State
Mot-clé du paramètre
Biosphere > Vegetation
Unité
code
Date de début (yyyy-mm-dd)
2005-04-21
Date de fin (yyyy-mm-dd)
2007-07-26
Précision du capteur / Incertitude
Paramètre mesuré 3
Nom du paramètre
Leaf Water Potential (leaf 1)
Mot-clé du paramètre
Biosphere > Vegetation
Unité
megapascals - MPa
Date de début (yyyy-mm-dd)
2005-04-21
Date de fin (yyyy-mm-dd)
2007-07-26
Précision du capteur / Incertitude
Paramètre mesuré 4
Nom du paramètre
Phenological State/Flowering State
Mot-clé du paramètre
Biosphere > Vegetation
Unité
code
Date de début (yyyy-mm-dd)
2005-04-21
Date de fin (yyyy-mm-dd)
2007-07-26
Précision du capteur / Incertitude
Paramètre mesuré 5
Nom du paramètre
Leaf Water Potential (leaf 2)
Mot-clé du paramètre
Biosphere > Vegetation
Unité
megapascals - MPa
Date de début (yyyy-mm-dd)
2005-04-21
Date de fin (yyyy-mm-dd)
2007-07-26
Précision du capteur / Incertitude
Paramètre mesuré 6
Nom du paramètre
Leaf Water Potential (leaf 3)
Mot-clé du paramètre
Biosphere > Vegetation
Unité
megapascals - MPa
Date de début (yyyy-mm-dd)
2005-04-21
Date de fin (yyyy-mm-dd)
2007-07-26
Précision du capteur / Incertitude
Information sur l'utilisation des données
Conditions d'utilisation des données
Permission is granted to use these data in research and publications when accompanied by the following statement: "The AMMA-CATCH regional observing system was set up thanks to an incentive funding of the French Ministry of Research that allowed pooling together various pre-existing small scale observing setups. The continuity and long term perenity of the measurements are made possible by an undisrupted IRD funding since 1990 and by a continuous CNRS-INSU funding since 2005."
Dataset as provided by the Principal Investigator