CarboScen : A tool to estimate carbon implications of land-use scenarios

Land use directly impacts ecosystem carbon and indirectly influences atmospheric carbon. Computing ecosystem carbon for an area experiencing changes in land use is not trivial, as carbon densities change slowly after land-use changes. We developed a tool, CarboScen, to estimate ecosystem carbon in landscapes. It is a simple tool typically used with an annual time step, and is based on carbon pools and densities. It assumes that carbon density asymptotically approaches a value, which is set for the land-use type in question. We recommend CarboScen for landscapes with spatially relatively homogenous soils and climate, multiple land uses, and changes between these leading to slow changes in carbon densities because either soil organic carbon is included in the analysis or afforestation occurs. Thanks to its simplicity, it is particularly suitable for participatory planning, rapid assessment of REDD+ project potential, and educational use.Peer reviewe

Effects of climate and plant functional types on forest above-ground biomass accumulation

BackgroundForest above-ground biomass (AGB) accumulation is widely considered an important tool for mitigating climate change. However, the general pattern of forest AGB accumulation associated with age and climate gradients across various forest functional types at a global scale have remained unclear. In this study, we compiled a global AGB data set and applied a Bayesian statistical model to reveal the age-related dynamics of forest AGB accumulation, and to quantify the effects of mean annual temperature and annual precipitation on the initial AGB accumulation rate and on the saturated AGB characterizing the limit to AGB accumulation.ResultsThe results of the study suggest that mean annual temperature has a significant positive effect on the initial AGB accumulation rate in needleleaf evergreen forest, and a negative effect in broadleaf deciduous forest; whereas annual precipitation has a positive effect in broadleaf deciduous forest, and negative effect in broadleaf evergreen forest. The positive effect of mean annual temperature on the saturated AGB in broadleaf evergreen forest is greater than in broadleaf deciduous forest; annual precipitation has a greater negative effect on the saturated AGB in deciduous forests than in evergreen forests. Additionally, the difference of AGB accumulation rate across four forest functional types is closely correlated with the forest development stage at a given climate.ConclusionsThe contrasting responses of AGB accumulation rate to mean annual temperature and precipitation across four forest functional types emphasizes the importance of incorporating the complexity of forest types into the models which are used in planning climate change mitigation. This study also highlights the high potential for further AGB growth in existing evergreen forests.Peer reviewe

Fennougristiikka, fennistiikka ja - baltofennistiikka?

Kielenaineksetbaltofennistiikka (kieli: suomi, sivulla: 461)fennistiikka (kieli: suomi, sivulla: 461)fennougristiikka (kieli: suomi, sivulla: 461)iberoromanistiikka (kieli: suomi, sivulla: 461)rusistiikka (kieli: suomi, sivulla: 461

Etteikö kelpaa?

Kielenaineksetepäillä (kieli: suomi, sivulla: 120)etteikö (kieli: suomi, sivulla: 119

Karjalan kielikartasto

Kirja-arvioBubrih, D. V. & Beljakov, A. A. & Punzhina, A. V.: Dialektologitsheskij atlas karel'skogo jazyka = Karjalan kielen murrekartast