Strategy for estimating C stocks in German forest soils based on forest inventories - possibilities and limits | Strategie zur Abschätzung des C-Vorrates in deutschen Waldböden auf der Basis von Waldinventuren - Möglichkeiten und Grenzen
2007
Wellbrock, Nicole
The German government decided in December 2006 to report on greenhouse gas emissions as Article 3.4 required. For the reporting period 2008 to 2012 the assumption had been made that forest soils are no source for greenhouse gases. In consequence to that, no values for forest soils will be reported until 2012. Then, the evaluation for the national soil inventory will be done and reliable data will he available. This evaluation will contain changes of carbon stocks between the two inventory periods (1992 -2008) as well as regionalisation of carbon stocks. The adoption of models to quantify annual changes of carbon stock is under discussion too. However, at the moment a detailed concept how to calculate carbon stocks and changes of carbon stocks in german forest soils is still in process. The detection of soil carbon stock changes is a difficult task. Small changes compared to the large pool and different uncertainties as well as high spatial variability in forest soils, make it difficult to detect changes based on direct measurements. In the kind of uncertainties connected to its estimation and how to handle them the article will focus on. The reason for that focus is - beneath the minimizing of errors - the organisation of the monitoring in Germany, which has to regard on the federal structure of Germany. The federal states are responsible for the field assessments and the laboratory work. The Federal Research Centre collects the data from the federal states to make an evaluation for the entire Germany.
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