Projecting the carbon sink of managed forests based on standard forestry data [Elektronische Ressource] / von Thomas Wutzler

Twutz

Sujets

• Biologie

Informations

• Publié par: friedrich-schiller-universitat_jena
• Publié le: 01 janvier 2008
• Nombre de lectures: 17
• Langue: English
• Poids de l'ouvrage: 1 Mo

Extrait

Projecting the carbon sink of managed forests
based on standard forestry data



Ph.D. Dissertation



Thomas Wutzler












June 2007
Publications updated in April 2008




Faculty of Chemistry and Geosciences
Institute of Geography
Department of Geoinformatics and Remote Sensing
FRIEDRICH-SCHILLER-UNIVERSITY JENA
Jena, Germany 2007




Projecting the carbon sink of managed forests
based on standard forestry data





Dissertation


Zur Erlangung des akademischen Grades doctor rerum naturalium
(Dr. rer. nat)














vorgelegt dem Rat der Chemisch-Geowissenschaftlichen Fakultät der
Friedrich-Schiller-Universität Jena


von Dipl. Inf. Thomas Wutzler
geboren am 12. Dezember 1977 in Meerane





Gutachter:
1. Prof. Dr. Ernst-Detlef Schulze, Max-Planck-Institute for Biogeochemistry, Jena
2. Prof. Dr. Christiane Schmullius, FSU Jena, Institute for Geography

Tag der öffentlichen Verteidigung: 21.5.2008 Acknowledgements


I want to thank my supervisors Prof. Dr. Ernst-Detlef Schulze and Prof. Dr. Christiane
Schmullius for supporting my work. They always quickly responded to my E-mails and I greatly
appreciate the freedom that they offered to me and to the direction of this thesis.

Especially, I am indebted to my colleagues Martina Mund and Hannes Böttcher for always
being available for discussions. The discussions often led to new perspectives and helped to
clarify my reasoning.

I am very grateful to the co-authors of my papers PD Dr. Barbara Köstner, Prof. Dr. Christian
Bernhofer, Dr. Christian Wirth, Dr. Martina Mund, and Dr. Markus Reichstein. They
contributed a great deal to the clarification of my ideas and the formulation of the manuscripts.

Georg Weber from TLJWF and Anka Nicke from Forestry College in Schwarzburg are
acknowledged for communicating data and rules of the operational forestry in Thuringa.
Especially, I appreciated the discussions with Ingolf Profft from TLJWF and his forestry
perspective on my work.

Jens Schuhmacher I want to thank for his patient support with several statistical aspects of this
work.

Annett Börner, Ingo Schöning, Anna Görner, and Hannes Böttcher are thanked for proofreading
versions of the manuscript. Their comments improved the language and the clarity of many
passages.

This work was funded by a scholarship for postgraduates of the German Environmental
Foundation and by the Max-Planck-Institute for Biogeochemistry.

There are many people inside and outside the institute, who made me feel at home in Jena.
Especially, I want to thank my friends from the Lutherhaus church in Jena for both, the
encouragement for my work, and for the more important aspects of live.


For the deep love of my dear wife Christiane.





God's works are so great, worth
A lifetime of study—endless enjoyment!

(Psalm 111)

Table of contents
Table of contents ..........................................................................................................................................1 
List of Publications .......................................................................................................................................2 
Deutsche Zusammenfassung ........................................................................................................................3 
Thesis Frame ................................................................................................................................................7 
1.  Abstract .................................................................................................................................................7 
2.  Introduction ...........................................................................................................................................7 
3.  Objectives..............................................................................................................................................8 
4.  Background ...........................................................................................................................................8 
4.1.  Terrestrial carbon cycle ..........8 
4.2.  Thinning strategies and yield tables .............................................................................................9 
4.3.  Tree growth models ......................................................................................................................9 
4.4.  Modelling and simulation (M&S) .............................................................................................. 10 
5.  Materials and methods ......................................................................................................... ............... 10 
5.1.  Study region ............................................................................................................................... 10 
5.2.  Forestry ...................................................................................................................... ................. 11 
5.3.  Inventory data ................................................................................................................ ............. 11 
5.4.  Empirical equations of carbon stocks ......................................................................................... 11 
5.5.  The TreeGrOSS-C coupled model ............................................................................................. 12 
5.6.  The TreeGrOSS stand growth model 12 
5.7.  The Yasso soil carbon model ................................................................................................... .. 12 
5.8.  The products carbon model ........................................................................................................ 13 
5.9.  The forestry management model ................................................................................................ 14 
5.10.  Uncertainty analysis .......................................................................................................... ..... 15 
6.  Results and discussion ........................................................................................................ ................ 15 
6.1.  Carbon stocks (Publication I) ..................................................................................................... 15 
6.2.  Validation of the stand growth model ........................................................................................ 15 
6.3.  Uncertainty of converting tree properties to tree compartment carbon stocks and turnover
(Publications II and III) ............... 15 
6.4.  Litter Production and Initial soil model carbon pools (Publications III and IV) ........................ 16 
6.5.  Application at forest district scale (Publication V) .................................................................... 17 
7.  Conclusions ................................................................................................................... ...................... 18 
8.  Future research ............................................................................................................... ..................... 18 
References .................................................................................................................... .............................. 19 



1 List of Publications
This thesis is based on the following Publications, which are referred to by their Roman numerals.

I. Wutzler, T., B. Köstner, and C. Bernhofer. 2006. Spatially explicit assessment of carbon stocks
of a managed forest area in Eastern Germany. European Journal of Forest Research 126:371-381.

II. Wutzler, T., C. Wirth, and J. Schumacher. 2008. Generic biomass functions for Common beech
(Fagus sylvatica L.) in Central Europe - predictions and components of uncertainty. Canadian
Journal of Forest Research, 38 (6), June 2008.

III. Wutzler, T., and M. Mund. 2007. Modelling mean above and below ground litter production
based on yield tables. Silva Fennica 41: 559-574.

IV. Wutzler, T., and M. Reichstein. 2007. Soils apart from equilibrium – consequences for soil
carbon balance modelling. Biogeosciences 4:125-136.

V. Wutzler, T. 2008. Effect of the aggregation of multi-cohort mixed stands on modeling forest
ecosystem carbon stocks. Silva Fennica submitted.



Statement about the own contribution to the Publications
Publication I
I performed the integration of the data sources, took and analyzed the soil samples, tested and
implemented all the quantification and