Carbon and water vapor fluxes over four forests in two contrasting climatic zones
نویسندگان
چکیده
منابع مشابه
Partitioning carbon dioxide and water vapor fluxes using correlation analysis
Partitioning of eddy covariance flux measurements is routinely done to quantify the contributions of separate processes to the overall fluxes. Measurements of carbon dioxide fluxes represent the difference between gross ecosystem photosynthesis and total respiration, while measurements of water vapor fluxes represent the sum of transpiration and direct evaporation. Existing flux partitioning pr...
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Temperate grasslands are a species-rich ecosystem that may be important in mitigating the increase in atmospheric CO2. The effect of shrub invasion on CO2 fluxes in Northern Great Plains grasslands is not known. The objectives of this research were to determine CO2 and water vapor fluxes over a grazed mixed-grass prairie (prairie site) and a mixed-grass prairie that has extensive invasion of sh...
متن کاملApplication of least squares vector machines in modelling water vapor and carbon dioxide fluxes over a cropland.
Least squares support vector machines (LS-SVMs), a nonlinear kemel based machine was introduced to investigate the prospects of application of this approach in modelling water vapor and carbon dioxide fluxes above a summer maize field using the dataset obtained in the North China Plain with eddy covariance technique. The performances of the LS-SVMs were compared to the corresponding models obta...
متن کاملModelled effects of precipitation on ecosystem carbon and water dynamics in different climatic zones
The ongoing changes in the global climate expose the world’s ecosystems not only to increasing CO2 concentrations and temperatures but also to altered precipitation (P) regimes. Using four well-established process-based ecosystem models (LPJ, DayCent, ORCHIDEE, TECO), we explored effects of potential P changes on water limitation and net primary production (NPP) in seven terrestrial ecosystems ...
متن کاملForest carbon stocks and fluxes in physiographic zones of India
BACKGROUND Reducing carbon Emissions from Deforestation and Degradation (REDD+) is of central importance to combat climate change. Foremost among the challenges is quantifying nation's carbon emissions from deforestation and degradation, which requires information on forest carbon storage. Here we estimated carbon storage in India's forest biomass for the years 2003, 2005 and 2007 and the net f...
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ژورنال
عنوان ژورنال: Agricultural and Forest Meteorology
سال: 2013
ISSN: 0168-1923
DOI: 10.1016/j.agrformet.2013.06.003