Search Results

1 - 10 of 41 items :

  • "European larch" x
Clear All

Model wzrostu dla modrzewia europejskiego (Larix decidua Mill.) wykorzystujący cechy taksacyjne drzewostanu

tendencji wzrostowych. Sylwan, 147 (6): 99-106. Jaworski A. 2003b. Zmiany tendencji wzrostowych głównych lasotwórczych gatunków drzew w Europie i obszarach górskich Polski oraz ich przyczyny. Część II. Przypuszczalne przyczyny zmian tendencji wzrostowych. Sylwan, 147 (7): 69-74. Kondracki J. 2000. Geografia regionalna Polski. Warszawa, PWN. ISBN 83-01-13897-1. Koprowski M. 2012. Long-term increase of March temperature has no negative impact on tree rings of European larch ( Larix decidua ) in lowland Poland. Trees, 26: 1895-1903. DOI 10.1007/s00468

Rolniczej i Leśnej 2: 20–22. Kaliniewicz, Z., Markowski, P., Anders, A., Rawa, T., Liszewski, A., Fura, S. 2012. Correlations between the germination capacity and selected attributes of European larch seeds ( Larix decidua Mill.). Technical Sciences/University of Warmia and Mazury in Olsztyn : 229–242. Kaniewski K. Kucewicz O. 1978. Anatomical development of the Abies alba Mill. cone and shedding of its scales during ripening. Zeszyty Naukowe SGGW w Warszawie, Leśnictwo 26: 141–158. Kulej M., Skrzyszewska K. 1996. Wstępna ocena zmienności szyszek świerka

-59. Kowalczyk J. 2002. Analysis of accuracy of phenotypic selections based on European larch half-sib progeny test results. w: Improvement of larch ( Larix sp.) for better growth, stem form and wood quality. Proceedings of an International Symposium, Gap (Hautes Alpes) - Auvergne & Limousin, France, 16-21 September 2002: 95-103. Krupski P., Giertych M. 1997. Analiza produktywności świerka pospolitego ( Picea abies (L.) Karst.) różnych proweniencji i rodów z niżu południowej Polski. Arboretum Kórnickie , 42: 185-198. Kulej M. 2010. Wartość genetyczno-hodowlana wybranych

Wpływ nawożenia organicznego i ściółkowania na wzrost modrzewia europejskiego (Larix decidua L.) oraz aktywność biologiczną gleb

Wpływ warunków podsuszania nasion modrzewia europejskiego, daglezji zielonej i sosny górskiej przeznaczonych do długookresowego przechowywania na ich żywotność

Zmiana wielkości krzywizn u modrzewi różnych pochodzeń na powierzchni doświadczalnej w Rogowie

populations in Quebec, Canada. Forest Ecology and Management 205: 169-182. CIESLAR, A. (1914): Studien über die Lärche. Centralblatt für das gesamte Forstwesen 40: 171-184 FINLAY, K.W. and G. N. WILKINSON (1963): The analysis of adaptation in a plant breeding program. Australian Journal of Agricultural Research 14: 742-754. GIERTYCH, M. (1979): Summary of results on European larch (Larix decidua Mill.) height growth in the IUFRO 1944 provenance experiment. Silvae Genetica 28(5-6): 244-256. GIERTYCH, M. and J. OLEKSYN (1992): Studies on genetic variation in Scots pine (Pinus

Abstract

Twenty-two year measurements of a test of inter- and intraspecific larch hybrids among European (E), Japanese (J) and tamarack (T) parents growing in central Maine reveal significant hybrid vigor, especially among crosses involving J and E parents. The mean heights and diameters of all the interspecific crosses between J and E parents exceeded those of intraspecific crosses among either of the parents. The mean height after 22 years for all 17 JxE and ExJ crosses was 19.2 m (63 feet), which compares favorably with heights of loblolly pine plantations at age 25 growing in the southeastern USA, where site index ranged from 12.2 m to 24.4 m (40 and 80 feet respectively). In addition the mean height of these larch crosses was 30% greater than that of a control hybrid seed lot of German origin. Crosses between E and T parents also performed well, but exhibited relatively poor form, and seed set was very low. Seed set and viability for crosses between J and E were as good as intraspecific parental crosses. Therefore propagation of hybrid larch crosses via controlled pollination and rooted cuttings is feasible, and the potential benefits of larch plantations for Maine’s forest economy are briefly discussed.

Abstract

Using the (unweighted) average linkage clustering (UPGMA) method we classified 458 phytosociological relevés of Larix decidua forests in the Southeastern Alps into 25 clusters. Based on their analysis we described the following new subassociations: Rhodothamno-Laricetum deciduae geetosum rivalis, sorbetosum chamaemespili, piceetosum abietis, adoxetosum moschatellinae, cystopteridetosum fragilis, cyclaminetosum purpurascentis, dryadetosum octopetalae and sorbetosum ariae. The selected method proved adequate in identifying the differences between larch stands on potential subalpine spruce and beech sites, and larch forests on the upper forest line, as well as the differences between initial larch stages on the upper forest line and more stable development stages on better developed soils on promontories and ledges above the upper beech forest line. Larch forests occur mainly in the altitudinal belt between (1,500) 1,600 and 1,800 (1,900) m, on shady aspects and slopes that are steeper than 30°. They are some of the best preserved forest types in the Southeastern Alps, on smaller surface areas (Macesnje above the Beli Potok valley in the Julian Alps) even virgin forests, and their role as biotopes is exceptional.