RT info:eu-repo/semantics/article
T1 Last-century forest productivity in a managed dry-edge Scots pine population: The two sides of climate warming
A1 Marqués López, Laura
A1 Madrigal González, Jaime
A1 Zavala Gironés, Miguel Ángel de
A1 Camarero, Jesús Julio
A1 Hartig, Florian
K1 Competition
K1 Drought stress
K1 Rear-edge
K1 Scots pine
K1 Shelterwood management
K1 Stand volume
K1 Summer water deficit
K1 Medio Ambiente
K1 Environmental science
AB Climate change in the Mediterranean, associated with warmer temperatures andmore frequent droughts, is expected to impact forest productivity and the functioning of forests ecosystems as carbon reservoirs in the region. Climate warming can positively affect forest growth by extending the growing season, whereas increasing summer drought generally reduces forest productivity and may cause growth decline, trigger dieback, hamper regenera- tion, and increase mortality. Forest management could potentially counteract such negative effects by reducing stand density and thereby competition for water. The effectiveness of such interventions, however, has so far mostly been evaluated for short time periods at the tree and stand levels, which limits our confidence regarding the efficacy of thinning interventions over longer time scales under the complex interplay between climate, stand structure, and forest management. In this study, we use a century-long historical data set to assess the effects of climate and management on forest productivity. We consider rear-edge Scots pine (Pinus syl- vestris) populations covering continental and Mediterranean conditions along an altitudinal gradient in Central Spain. We use linear mixed-effects models to disentangle the effects of alti- tude, climate, and stand volume on forest growth and ingrowth (recruitment and young trees' growth). We find that warming tends to benefit these tree populations, warmer winter temperature has a significant positive effect on both forest growth and ingrowth, and the effect is more pronounced at low elevations. However, drought conditions severely reduce growth andingrowth, in particular when competition (stand volume) is high. We conclude that summerdroughts are the main threat to Scots pine populations in the region, and that a reduction ofstand volume can partially mitigate the negative impacts of more arid conditions. Mitigationand adaptation measures could therefore manage stand structure to adopt for the anticipated impacts of climate change in Mediterranean forest ecosystems.
SN 10510761
YR 2018
FD 2018
LK http://hdl.handle.net/10017/38507
UL http://hdl.handle.net/10017/38507
LA eng
NO Ministerio de Economía y Competitividad
DS MINDS@UW
RD 20-abr-2024