Soil organic matter composition of forest Rendzinas in West Bulgaria

Abstract

Article InfoThe paper deals with of the relations between the forest ecosystem, calcareous rocks and content and composition of soil organic matter in the Golo Bardo area in West Bulgaria. In that area Rendzinas are used mainly for forestry, viticulture and pastures. A specific study based on the accumulation of soil organic matter according to the data on the composition of the soil organic acids. The research on the soil organic matter composition provided information on the course of the humification processes in studied soils. Soil organic matter accumulation in Rendzinas depends on different factors, such as land use and climatic conditions. Soil has rapid transformations of organic residues and strongly decomposed plant tissue predominates. There are often signs of active work of the soil mesofauna. Studied soils have good reserves of organic carbon high degree of humification. The organic carbon content varies in a wide range from 0.8 to 7.2 %. The humic acids prevail over fulvic acids, and the degree of humification is higher in deeper horizons. According to the C/N ratio the humus type is Mull in almost all horizons. Studied soils are biologically active that have favorable impact over the soil structure and vegetation. Rendzinas have high potential of organic carbon sequestration.

Correlation between Element and Radionuclide Activity Concentrations in Soil and Beech Forests Growth Potential

“…In this study, rendzina was on average a medium-productive forest soil with a higher productive potential on the dolomite parent material in SL (SI = 20901). According to Hristov et al [53], the rendzina soil type on calcareous rocks has a favorable impact on the soil structure and vegetation and represents a biologically active soil type with a high number of stable forms of humus. Also, rendzina has a high potential for organic carbon sequestration [53].…”

“…According to Hristov et al [53], the rendzina soil type on calcareous rocks has a favorable impact on the soil structure and vegetation and represents a biologically active soil type with a high number of stable forms of humus. Also, rendzina has a high potential for organic carbon sequestration [53].…”