Difference between revisions of "Carbon in Harvested Wood Products Results"

From Heureka Wiki
Jump to navigation Jump to search
m
m (Added text on CO2 Emission variable)
 
(11 intermediate revisions by 2 users not shown)
Line 1: Line 1:
 
[[Category:Result Variables]]
 
[[Category:Result Variables]]
 
[[Category:Harvested Wood Products]]
 
[[Category:Harvested Wood Products]]
−
This result group contains: [[ResultCategoryDescription::Estimates of carbon pool in harvested wood products stemming from the forest]].  
+
This result group contains: [[ResultCategoryDescription::Estimates of carbon pool in harvested wood products stemming from the forest analysis area]].  
  
−
==Calculation of dead wood==
+
See [[Harvested_Wood_Products|model description for Harvested Wood Products]].
−
See [[Harvested Wood Products model|model description for Harvested Wood Products]].
 
  
 
The projected sequestration of carbon in Harvested Wood Products is a result of extracted volumes per assortment, and assumptions of the longevity of the derived products.  
 
The projected sequestration of carbon in Harvested Wood Products is a result of extracted volumes per assortment, and assumptions of the longevity of the derived products.  
Line 20: Line 19:
 
| align="left" style="background:#f0f0f0;width: 30%;"|'''Description'''
 
| align="left" style="background:#f0f0f0;width: 30%;"|'''Description'''
 
|- style="vertical-align:top;"
 
|- style="vertical-align:top;"
−
| CO2 Emission||tonnes C02||Emission of CO2 related to the extracted volumes stemming from the analysis area.  
+
| CO2 Emission||tonnes CO2||Emission of CO2 related to the extracted volumes stemming from the analysis area, i.e. (Decrease in stock due to degradation - Inflow) * conversion factor ton CO2 per ton C.  
 
|- style="vertical-align:top;"
 
|- style="vertical-align:top;"
−
| Inflow Pulp Wood||tonnes C||Carbon pool inflow related to wood pulp stemming from the Wood fiber commodity extracted in the analysis.
+
| Inflow Pulp||tonnes C||Carbon pool inflow related to wood pulp stemming from the wood fiber commodity extracted in the analysis.
 
|- style="vertical-align:top;"
 
|- style="vertical-align:top;"
 
| Inflow Sawn Wood||tonnes C||Carbon pool inflow related to sawnwood stemming from sawtimber extracted in the analysis.
 
| Inflow Sawn Wood||tonnes C||Carbon pool inflow related to sawnwood stemming from sawtimber extracted in the analysis.
Line 28: Line 27:
 
| Inflow Wood Based Panels||tonnes C||Carbon pool inflow related to wood based panels stemming from the wood fiber commodity extracted in the analysis.
 
| Inflow Wood Based Panels||tonnes C||Carbon pool inflow related to wood based panels stemming from the wood fiber commodity extracted in the analysis.
 
|- style="vertical-align:top;"
 
|- style="vertical-align:top;"
−
| Stock Pulp Wood||tonnes C||Carbon pool stock related to wood pulp stemming from the Wood fiber commodity extracted in the analysis.
+
| Stock Pulp||tonnes C||Carbon pool stock related to wood pulp stemming from the wood fiber commodity extracted in the analysis.
 
|- style="vertical-align:top;"
 
|- style="vertical-align:top;"
−
| Stock Sawn Wood||tonnes C||Carbon pool inflow related to sawnwood stemming from sawtimber extracted in the analysis.
+
| Stock Sawn Wood||tonnes C||Carbon pool stock related to sawnwood stemming from sawtimber extracted in the analysis.
 
|- style="vertical-align:top;"
 
|- style="vertical-align:top;"
−
| Stock Wood Based Panels||tonnes C||Carbon pool inflow related to wood based panels stemming from the wood fiber commodity extracted in the analysis.
+
| Stock Wood Based Panels||tonnes C||Carbon pool stock related to wood based panels stemming from the wood fiber commodity extracted in the analysis.
 +
|- style="vertical-align:top;"
 +
| Stock Total||tonnes C||Sum of carbon pool stock related to all product types extracted in the analysis.
 
|
 
|
 
|}
 
|}
−
 
−
<!--
 
−
==Proportion standing and downed dead wood==
 
−
The proportion of dead wood that consists of downed logs vs. stand trees are handled as constant for a given decay class. Based on statistics from the Swedish NFI-data.
 
−
{| {{table}} width = 400px
 
−
| align="left" style="background:#f0f0f0;width: 10%;"|'''Decay Class'''
 
−
| align="left" style="background:#f0f0f0;width: 20%;"|'''Proportion downed logs (%)'''
 
−
|-
 
−
| 0|| 39
 
−
|-
 
−
| 1|| 39
 
−
|-
 
−
| 2|| 70
 
−
|-
 
−
| 3|| 91
 
−
|-
 
−
| 4|| 98
 
−
|-
 
−
|}
 
−
-->
 
−
 
−
<!--
 
−
==Default decay class distribution==
 
−
If you import data on dead wood occurrence, but only for the total and not per decay class, a default distribution is assumed:
 
−
{| {{table}} width = 400px
 
−
| align="left" style="background:#f0f0f0;width: 10%;"|'''Decay Class'''
 
−
| align="left" style="background:#f0f0f0;width: 20%;"|'''Proportion of total dead wood (%)'''
 
−
|-
 
−
| 0|| 13
 
−
|-
 
−
| 1|| 17
 
−
|-
 
−
| 2|| 20
 
−
|-
 
−
| 3|| 23
 
−
|-
 
−
| 4|| 27
 
−
|-
 
−
|}
 
−
 
−
==Carbon concentration per decay class==
 
−
Values are given as percentage (%) of dead wood dry matter. Based on Sandström et al. 2007 (Table 10)<ref name = "SandstromEtAl2007">{{:Bibliografi:SandstromEtAl2007}}</ref>. For birch, no data was avaliable and has therefore been set to 50 % for all classes.
 
−
{| {{table}}
 
−
| align="left" style="background:#f0f0f0;width: 10%;"|'''Decay Class'''
 
−
| align="left" style="background:#f0f0f0;width: 20%;"|'''Pine, Contorta and Larch'''
 
−
| align="left" style="background:#f0f0f0;width: 20%;"|'''Spruce'''
 
−
| align="left" style="background:#f0f0f0;width: 20%;"|'''Birch (and other species)'''
 
−
|-
 
−
| 0||50.32 ||49.22 ||50.0
 
−
|-
 
−
| 1||50.52 ||49.17 ||50.0
 
−
|-
 
−
| 2||51.46 ||49.68 ||50.0
 
−
|-
 
−
| 3||51.46 ||50.81 ||50.0
 
−
|-
 
−
| 4||52.23 ||51.27 ||50.0
 
−
|-
 
−
|}
 
−
 
−
==References==
 
−
<references />
 
−
-->
 

Latest revision as of 09:50, 29 August 2023

This result group contains: Estimates of carbon pool in harvested wood products stemming from the forest analysis area.

See model description for Harvested Wood Products.

The projected sequestration of carbon in Harvested Wood Products is a result of extracted volumes per assortment, and assumptions of the longevity of the derived products.

Result variables

Note!

All results currently only consider the contribution to the carbon pool from the starting point of the simulation an onwards. Any historically extracted volumes from the same areas have - and may still - be a part of the wood products carbon pool, but cannot be included for an arbitrary forest analysis area due to missing data on historical harvest levels. Such an existing carbon pool must be described outside of the current Heureka implementation.

Wood pulp and Wood based panels are made from Wood fiber commodity, which consists of pulpwood and sawmill by-products in the form of wood chips .

Variable name Unit Description
CO2 Emission tonnes CO2 Emission of CO2 related to the extracted volumes stemming from the analysis area, i.e. (Decrease in stock due to degradation - Inflow) * conversion factor ton CO2 per ton C.
Inflow Pulp tonnes C Carbon pool inflow related to wood pulp stemming from the wood fiber commodity extracted in the analysis.
Inflow Sawn Wood tonnes C Carbon pool inflow related to sawnwood stemming from sawtimber extracted in the analysis.
Inflow Wood Based Panels tonnes C Carbon pool inflow related to wood based panels stemming from the wood fiber commodity extracted in the analysis.
Stock Pulp tonnes C Carbon pool stock related to wood pulp stemming from the wood fiber commodity extracted in the analysis.
Stock Sawn Wood tonnes C Carbon pool stock related to sawnwood stemming from sawtimber extracted in the analysis.
Stock Wood Based Panels tonnes C Carbon pool stock related to wood based panels stemming from the wood fiber commodity extracted in the analysis.
Stock Total tonnes C Sum of carbon pool stock related to all product types extracted in the analysis.
Retrieved from "https://www.heurekaslu.se/w/index.php?title=Carbon_in_Harvested_Wood_Products_Results&oldid=10761"