Evaluation of BioSoil demonstration project : soil data analysis

The BioSoil demonstration Project was initiated under the Forest Focus-Scheme (Regulation (EC) Nr. 2152/2003) concerning the monitoring of forests and environmental interactions in the Community, and aimed to broaden the scope of previous forest monitoring activities (on atmospheric pollution and forest fires) to the fields of soil characteristics and biodiversity indicators. The evaluation of the project concentrated on analysing a selected number of parameters submitted by NFCs for estimating the distribution and changes in soil organic carbon and the performance of the WRB classification. The spatial consistency of data reported between NFCs was found to vary significantly between sources, such as the presence of an organic layer on the over soil. The temporal stability and changes in variable parameters were assessed using data from the previous soil condition survey on Forest Focus / ICP Forests Level I sites. No clear general trend in the development of soil organic carbon over the previous survey was found, but some local changes. The results provided by the Central Laboratory suggest that some methodological differences in assessing the organic carbon content of the organic layers exist between the FSCC / ICP Forests and the BioSoil survey. Those differences limit the scope of a change analysis. A particular problem in sampling and reporting data was the separation of the organic layer from the soil material, which was approached differently by the NFCs. The evaluation also concluded that the specifications provided in the Manual detailing sampling and analysis of the data collected need to be up-dated with a clear and unambiguous description of procedures to follow and making the reporting on key soil parameters a mandatory task.