Annual and diurnal cycles of the inverse relation between plant transpiration and carbon sequestration

Understanding biogeochemical cycles and especially carbon budgets is clue to validate global change models in the present and near future. As a consequence, sinks and sources of carbon in the world are being studied. One of those sinks is the non-well known behavior of the planet vegetation which in...

Full description

Autores:
Moreno-Ramírez, H. A. (Hernán Alonso)
Tipo de recurso:
Article of journal
Fecha de publicación:
2008
Institución:
Universidad EIA .
Repositorio:
Repositorio EIA .
Idioma:
eng
OAI Identifier:
oai:repository.eia.edu.co:11190/602
Acceso en línea:
https://repository.eia.edu.co/handle/11190/602
Palabra clave:
REI00082
RECURSOS NATURALES: AGUA, MINERALES, BIODIVERSIDAD
NATURAL RESOURCES: WATER, MINERALS, BIODIVERSITY
CICLO DEL CARBONO
CARBON CYCLE
CARBON SEQUESTRATION
EVAPOTRANSPIRATION
NET EXCHANGE OF CO2
EDDY COVARIANCE
LATENT HEAT FLUX
FIJACIÓN DE CARBONO
EVAPOTRANSPIRACIÓN
INTERCAMBIO NETO DE CO2
EDDY COVARIANZA
FLUJO DE CALOR LATENTE
Rights
openAccess
License
Derechos Reservados - Universidad EIA, 2020
Description
Summary:Understanding biogeochemical cycles and especially carbon budgets is clue to validate global change models in the present and near future. As a consequence, sinks and sources of carbon in the world are being studied. One of those sinks is the non-well known behavior of the planet vegetation which involves the processes of photosynthesis and respiration. Carbon sequestration rates are highly related to the transpiration through a molecular diffusion process occurring at the stomatal level which can be recorded by an eddy covariance micrometeorological station. This paper explores annual and diurnal cycles of latent heat (LE) and CO2 net (FC) fluxes over 6 different ecosystems. Based on the physics of the transpiration process, different time-scale analysis are performed, finding a near-linear relation between LE and CO2 net fluxes, which is stronger at the more vegetated areas. The North American monsoon season increases carbon up taking and LE-CO2 flux relation preserves at different time scales analysis (hours to days to months).