This conversion entails the transition from a condition where a number of stems grow contemporaneously on a single stool to a condition where only one stem is left to continue its growth so that it assumes a larger dimension. ![]() Now, based on social and economic factors, there is a trend to convert traditional coppice management to high-standard management ( Nocentini, 2009). This situation stems from when there was a high demand for small timber, firewood and charcoal. The Italian National Forest Inventory ( SIAN, 2013) indicates that more than 60 percent of Italian forests are maintained under a coppice regime. Consequently the fine-root C:N ratio was significantly higher in coppiced than in converted stands and showed an inverse relationship with fine-root turnover rate, confirming a significant change of fine-root status after the conversion of a coppice to high forest. The data collected indicate that N concentration was higher in converted stands than in the coppiced stand whereas C concentration was higher in the coppiced stand than in converted stands. Fine-root traits were measured by means of WinRHIZO software which enable us to separate them into three different diameter classes (0–0.5, 0.5–1.0 and 1.0–2.0 mm). Fine-root sampling was conducted within three different soil depths (0–10 10–20 and 20–30 cm). In order to evaluate possible interferences due to different vegetative stages of vegetation, fine-root sampling was repeated six times in each stand during the same 2008 growing season. This paper investigates C and N concentrations in fine roots in relation to different stand characteristics resulting from conversion of coppiced forests to high forests. Gaining further knowledge about their dynamics would improve soil carbon input understanding.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |