International workshop on

Koli (c) Metla/Erkki Oksanen

Development of Models and Forest Soil Surveys for Monitoring of Soil Carbon

April 5-8, 2006 at Koli, Finland

Monitoring of organic carbon stocks in forest soils in Southwest Bulgaria

M. Sokolovska, M. Zhiyanski, T. Lyubenov

Forest Research Institute, Bulgarian Academy of Sciences, 132 “Kl. Ohridski” Blvd., 1756 Sofia, Bulgaria;

The carbon stocks in forest soils take important place both in environmental protection and in forest production. With the signing of the UNCCC Bulgaria demonstrates its willingness to contribute the activities minimizing the global climate change and to fulfill the obligations. The Bulgarian forests are 34 % from the territory of the country and the status of these types of ecosystems in the period of global climate change together with the management practices of forest resources are of a great importance for arise the forest- absorbance capacity. The study reports estimates of the organic carbon stocks of forest soils from southwest Bulgaria based on available data of organic carbon, bulk density and coarse fragments measurements along the profiles depths of different soil types. Tree soil groups are presented in the forest area of southwest region of Bulgaria (Leptosols, Luvisols and Cambisols). Average organic carbon density is from 0,8 kg.m -2 to 7.3 kg.m -2 for the upper 0-20 cm of soil, from 0,6 kg.m -2 to 5.6 kg.m -2 for the layer 0-10 cm. The estimated organic carbon density in organic layer (litter) ranges from 6,25 to 9.9 kg.m -2. For estimations is used the current methodology applied in our country and the main point that have to be harmonized are presented. The maps with the present status and the changes in soil organic carbon stocks of the studied region for last decade are elaborated. The ArcGIS 9.0 & Spatial Analyst is used for spatial data analysis and mapping at regional scale.

   Päivitetty:   02.03.2006 / EKel Metla : Events   Palaute Metlan etusivulle
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