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Type of publication: research article
Type of publication (PDB): Straipsnis Clarivate Analytics Web of Science / Article in Clarivate Analytics Web of Science (S1)
Field of Science: Miškotyra / Forestry (A004)
Author(s): Pretzsch, H;Steckel, M;Heym, M;Biber, P;Ammer, Ch;Ehbrecht, M;Bielak, K;Bravo, F;Ordóñez, C;Collet,C;Vast, V;Drössler, Lars;Brazaitis, Gediminas;Godvod, Kšištof;Jansons, A;Dios‑García, J. de;Lof, M;Aldea, J;Korboulewsky, N;Reventlow, D.O.J;Nothdurft, A;Engel, M;Pach, M;Skrzyszewski, J;Pardos, M;Ponette, Q;Sitko, R;Fabrika, M;Svoboda, M;Černý, J;Wolff, B;Ruíz-Peinado, R;Río, M. del
Title: Stand growth and structure of mixed‑species and monospecific stands of Scots pine (Pinus sylvestris L.) and oak (Q. robur L., Quercus petraea(Matt.) Liebl.) analysed along a productivity gradient through Europe
Is part of: European journal of forest research. New York : Springer, 2020, vol. 139, iss. 3
Extent: p. 349–367
Date: 2020
Keywords: Triplet approach;Functional–structural complementarity;Mixing effects;Overyielding;Crown allometry
Abstract: Past failures of monocultures, caused by wind-throw or insect damages, and ongoing climate change currently strongly stimulate research into mixed-species stands. So far, the focus has mainly been on combinations of species with obvious complementary functional traits. However, for any generalization, a broad overview of the mixing reactions of functionally different tree species in different mixing proportions, patterns and under different site conditions is needed, including assem-blages of species with rather similar demands on resources such as light. Here, we studied the growth of Scots pine and oak in mixed versus monospecific stands on 36 triplets located along a productivity gradient across Europe, reaching from Sweden to Spain and from France to Georgia. The set-up represents a wide variation in precipitation (456–1250 mm year−1), mean annual temperature (6.7–11.5 °C) and drought index by de Martonne (21–63 mm °C−1). Stand inventories and increment cores of trees stemming from 40- to 132-year-old, fully stocked stands on 0.04–0.94-ha-sized plots provided insight into how species mixing modifies stand growth and structure compared with neighbouring monospecific stands. On average, the standing stem volume was 436 and 360 m3 ha−1 in the monocultures of Scots pine and oak, respectively, and 418 m3 ha−1in the mixed stands. The corresponding periodical annual volume increment amounted to 10.5 and 9.1 m3 ha−1 year−1 in the monocultures and 10.5 m3 ha−1 year−1 in the mixed stands. Scots pine showed a 10% larger quadratic mean diameter (p < 0.05), a 7% larger dominant diameter (p < 0.01) and a 9% higher growth of basal area and volume in mixed stands compared with neighbouring monocultures. For Scots pine, the productivity advantages of growing in mixture increased with site index (p < 0.01) and water supply (p < 0.01), while for oak they decreased with site index (p < 0.01). In total, the superior productivity of mixed[...]
Affiliation(s): Miškų ir ekologijos fakultetas
Vytauto Didžiojo universitetas
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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