Read the articles and learn more about carbon cycle, abiotic factors and interaction between climate and forests. You can pick the article from this sorted list or explore them through the menu on the right side.
The carbon bound in net primary production is eventually transferred to the soil in litter fall, root turnover and death of individual plants. In addition, trees notably allocate carbon to the root systems for root growth and root maintenance. Carbon is also added to the forest floor from leaching of dissolved organic matter from the canopy.
Sun light makes photosynthesis possible. From all the available light that comes from the sun, green plants are able to use most efficiently the visible light. This wavelength range is called photosynthetically active radiation (PAR) and is the common measure for light intensity in plant sciences. The unit for PAR is usually µmol m–2 s–1. The effect of light on photosynthesis has a clear saturating pattern. At low light intensity more light results in more photosynthesis.
Gases enter and leave the leaf through stomata, which actively control the gas exchange of CO2 and H2O, for example, between the plant and the atmosphere.
Plants need to keep the stomata as open as possible to obtain atmospheric carbon dioxide but at the same time, they need to control the loss of water via transpiration. Therefore, plants actively optimise the status of stomata to gain carbon as much as possible but not to lose too much water.
We have collected our data from SMEARII–station that is an intensively equipped world-class observatory operating near the Hyytiälä since 1995. The main idea of SMEAR-type infrastructures is continuous, comprehensive measurements of fluxes, storages and concentrations in the land ecosystem–atmosphere continuum. An extensive collection of measurement data provides information on the effects of climate change across the boreal forests of the region.
The dynamics of a boreal forest along the year is strongly marked by the seasonality of the subarctic climate, which is the climatic area of the world where boreal forest thrive. In this area, forests typically experience a long cold season and a relatively short warm season. In addition, winters are particularly dark at higher latitudes. Boreal forests are rather wet ecosystems that rarely experience water stress -but also typically, water is unusable to plants while it stays in solid form (snow, ice) during the cold season.
The carbon bound in net primary production is eventually transferred to the soil in litter fall, root turnover and death of individual plants. In addition, trees notably allocate carbon to the root systems for root growth and root maintenance. Carbon is also added to the forest floor from leaching of dissolved organic matter from the canopy.
