Tavastia Proper is a strong Carbon husbandry region in Finland

xxx

xxx

xxx



xxx

Kommentit

Lähetä kommentti

Tämän blogin suosituimmat tekstit

Reference Carbon fluxes in Finnish Carbon husbandry

Kuva
The important, key fluxes in Finnish Carbon husbandry are the two: (1) positive Carbon sink flux to Finnish forests and (2) negative Carbon emissions (source) flux from Finnish arable lands. The most accurate data in Finland have been measured for (1) in Finnish forests. In the year 2020 there is the calculated average Carbon sink flux to Finnish forests of magnitude +393 kg C/ha/a.  Picture 1. Coppicing Downy birch - promising tree species for boreal Carbon husbandry in peatlands The most accurate data for Finnish arable lands (2) has been measured for mineral soils. In the year 2020 there is the calculated average Carbon emissions flux from Finnish arable lands of magnitude -430 kg C/ha/a. (Figure 1). Figure 1. Reference Carbon fluxes. Sink fluxes positive, source (emissions) fluxes negative. There is still less comprehensive measurement series for Carbon emissions from arable lands on peat soils. However, it is assumed that the emissions from a peat arable hectare are about 10 tim
Lue lisää

Forest Carbon number and Forest Carbon flux, per forest hectare, at national level, in Finland since 1921

Kuva
Forest carbon number for a special year tells how many tons of elementary Carbon there is per forest hectare. The Carbon is stored in the trees, including the solid stems, the branches, the foliage and the roots. Forest carbon number can be calculated at various categories level like at farm forest level, at regional forests level, at national forests level and at global forests level. Forest carbon number (fc) is calculated by dividing the total carbon stock (c, tn C) at certain time point (t, years) by the forest land area (fl, hectares) over the selected category. (1)      fc(t) = c(t) / fl(t) At Finnish national level the Carbon stock (c) equation is (2)     c(t) = 0.06460  * t^2 - 250.40 * t + 243136 Consequently, the forest land (fl) equation is (3)     fl(t) = -0.006073 * t + 38.46 The development of forest carbon number (fc, equation 1) for Finnish forests is shown in Figure 1. Figure 1. Development of Forest carbon number (fc) in Finland since 1921. The
Lue lisää

Carbon stock in and Carbon fluxes at mineral soil arable lands in Finland

Kuva
Carbon in agricultural fields belongs to the most topical research sectors for climate change in 2020s. Carbon husbandry is searching for new methods how to increase the Carbon stock in the soil. Also perennial crops and agroforestry methods have become more topical, like possibility of willow husbandry in new era farms (Picture 1).  Picture 1. Annual and perennial crop blocks in the agriculture Carbon in agricultural fields, in arable lands has been measured by the Natural Resource Institute Finland (Luke) in a comparative manner, in several hundreds sample plots, by repeating four times, since 1987 (ref 1). The basic measurements have been done for the content of elementary Carbon in dry soil (g C/kg). The measurements cover three soil classes: mineral soil, mull soil and peat soil. The classification is based on the share of dry weight organic (humus) soil in the total soil dry weight. In mineral soil the organic share is less than 20 per cent. In mull soil the share is between 20 -
Lue lisää