Workshop Carina Ortiz Somero Most Spruce Did not do the - PowerPoint PPT Presentation

Presentation of LUC in Milano 13-16 April 2010 Cost639 Modeling Workshop Carina Ortiz

Somero • Most Spruce – Did not do the decidious 3%. Normally in Q not treated, but there are assumptions to make if you like…. • Steady state carbon input – old carbon – Most critical – 40 year old – max prod. How to estimate average for whole rotation period? – Functions of needle biomass related to latidute  Needle litter (Hyvönen et al. 2002, Plant and Soil). Based on productivity of the soil. – Relations between needle biomass and total litter production  Total litter (Saarsalmi et al. 2007, For. Ecol. Manag.) – Annual litter input of 2008  fraction of different qualities  fractions of liter input from the average rotation period – Now we can make the steady state assumption!  Carbon steady state input. • Forest biomass 2008 • Agricultural biomass 1990-2008

Somero • 1 is with a medium 180 fertile soil, mostly 160 140 blueberres, small 120 bushes Serie1 100 Serie2 80 • 2 is a more fertile Serie3 60 Serie4 soil 40 20 •  it is very 0 0 5 10 15 20 improtant what assumptions you make when setting your inititalization

Somero 0 • Rate of change during 1 2 3 simulation period -0.5 • 1= medium fertile • 2= obs -1 • 3=fertile soil Serie1 • Does not only affect the -1.5 SOC stock but also the rate of change -2 •  SA analysis of intitialization/Input would -2.5 be of help. Is this something we can include???