Addition of logging residues short-term affects basic soil parameters and soil organic carbon in six types of urban plantations

Abstract

Different treatments of logging residues can impact on the forest soil carbon pool, but the short-term effects are still unclear. This study aimed to the relationship between the changes of the addition of logging residues and different tree species soil organic carbon content and basic soil parameters. The experimental site was located in Harbin, China, and four logging residue addition levels were set under six forest types, converted to carbon added as 0, 250 (low carbon addition, LC), 500 (medium carbon addition, MC) and 1000 (high carbon addition, HC) g/m2. In the short-term (five months), the logging residues partially decomposed, but the effect on basic soil parameters was small. Soil organic carbon, microbial carbon, and dissolved organic carbon increased significantly in the 0–10 cm soil layer for some tree species, and not significantly in the 10 –20 cm soil layer. There is no consistent relationship between the addition of logging residues and soil parameters under different tree species. That adding logging residues could increase soil carbon pool, there were treespeciesspecific differences in the dynamics of soil processes.