Silviculture to sustain productivity in black spruce paludified forests

Ecosystem management in paludified boreal forests: enhancing wood production, biodiversity, and carbon sequestration at the landscape level

“…K + , Ca ++ , Mg ++ ) concentrations are usually higher in the forest floor following fire than after logging Thiffault et al 2007). However, in the Clay Belt, both Simard et al (2001) and Lafleur et al (2016) failed to detect any differences in total N and base cation concentrations between burned and logged stands. Nevertheless, Simard et al (2001) found that approximately 20 years after disturbance concentrations of N and Ca were significantly higher in disturbed stands (either by fire or logging) relative to control stands.…”

“…Simard et al (2007) observed higher foliar N and P concentrations after high-severity soil burns than after low-severity soil burns. Similarly, Lafleur et al (2016) showed the foliar N and P concentrations were similar in trees established after both high-severity soil burns and clearcutting, whereas Lafleur et al (2010b) showed that foliar N concentrations was higher after clearcutting than after careful logging around advanced growth.…”

“…More recently, Lafleur et al (2016) also showed that in paludified sites, disturbance type could significantly affect the relative abundance of understory vascular plants and bryophytes. For instance, they observed that the ground cover of the ericaceous species R. groenlandicum (an important competitor of black spruce) was significantly lower in sites where soils were severely burned or severely mechanically disturbed by clearcutting relative to sites where soils were only superficially burned (i.e.…”

“…In the same vein, Lafleur et al (2010a), Lafleur et al (2010b) showed that 10 to 20 years after harvesting forest productivity was lower following logging methods dedicated to soil protection such as careful logging compared to logging methods, such as clearcutting, where machinery trafficking is allowed across the entire cutover area. Furthermore, Lafleur et al (2010b), Lafleur et al (2016) showed that clearcutting conducted during summer regenerate stands that are as productive as those regenerating after high-severity soil burns.…”

Cambiamento globale selvicoltura e sperimentazione

“…Nella gran parte dei casi la corretta valutazione sperimentale delle pratiche di gestione forestale richiede tempi molto lunghi. Per superare questo vincolo può talora essere utile una analisi riassuntiva e comparativa di dati e circostanze esistenti: è il metodo delle cosiddette cronosequenze (a esempio: Moussaoui et al, 2019) e dei cosiddetti studi retrospettivi (a esempio: Lafleur et al, 2016). Questi approcci possono ridurre notevolmente il tempo necessario per l'ottenimento di evidenze corroborate e hanno in genere costi relativamente ridotti.…”