Folia Historico-Naturalia Musei Matraensis - A Mátra Múzeum Természetrajzi Közleményei 6. (1980)
Kárász, I.–Szabó, E.: Produkcióvizsgálatok a síkfőkúti cseres-tölgyes erdő cserjeszintjében, II.
KÁRÁSZ, I.— SZABÓ, E.: SHRU BLAYER PRODUCTION INVESTIGATION IN THE QUERCUS PETRAEA — É. CERRIS ECOSYSTEM OF THE SÍKFŐKÚT RESEARCH AREA II. The present paper contains the results of a year ь production estimation carried out in the low shrub layer of the ecosystem of the Síkfőkút („Síkfőkút Project") turkey oak (Querceturn petraeae-cerris) forest having been the subject of a complex biosphere research since 1972. We estimated a year's production of most significant 10 low shrub layer species in 1979. The otner 6 species are discussed under the title „other". One year's organic material growth of the above-grund components (foliage, a year old twig, branch + + stem = branch) is included in the estimation. The production of the shrubs was measured by the average shrub metod based on the measurement data of 10 sample shrub each with average dimension per species (Table 1), and counted according to species. Our results in dry weight per hectare are shown in Table 2. IRODALOM GIM1NGHEM, С M.—MILLER, G. R. (1968): Measurement of the primary production of dwarf shrub theathe, in MILLER, С et HUGHES, R. E. — IBP Handbook 6:43)51. HYTTEBORN, H. (1975): Deciduosus woodland at Andersby, Eastern Sweden,. Above-ground tree and shrub production. — Acta Phytogeogr. Suecica 61:1—96. JAKUCS, P. (1967): Querceturn pertaeae-cerris. In: Guide der Exkursionen des Int. Geobot. Symp. Ungarn. Eger—Vácrátót, 40—42, 83—84. JAKUCS, P.— HORVÁTH, E.— KÁRÁSZ, I. (1975): Contribution to the aboveground stand structura of an oak forest ecosystem Querceturn petraeae-cerris within the Síkfőkút Research area. — Acta Biol. Debrecina 12:149—153. KÁRÁSZ, I. (1976): Shrub layer phytomass investigations in the Quercus petraea-Qu. cerris ecosystem of the Síkfőkút research area. -— Acta Bot. Acad. Sei. Hung* 22:79—84.' KÁRÁSZ, I. (1979): Produkció vizsgálatok a síkfőkúti cseres-tölgyes erdő cserjeszintjében I. — HSMTKF Tud. Közi. 15:323—333. NEWBOULD, P. J. (1967): Methods for estimating the primary production of forests. — IBP Handbook No. 2:12—28. OVINGTON, J. D.—FORREST, W. G.—ARMSTRONG, J. S. (1968): Tree biomass. estimation. In: Symposium on primary productivity and mineral cycling in natural ecosystems. Yung, H. E. ed., Orono, 4—31. OVINGTON, J. D.—HEITKAMP, D.—LAWRENCE, D. B. (1963): Plant biomass. and productivity of prairie, savanna, oakwood and maize field ecosystems in central Minnesota. — Ecology 44:52—53. PAPP, M. —JAKUCS, P. (1976): Phytocönologische Charakterisierung des Querceturn petraeae-cerris-Waides des Forschungsgebiets „Síkfőkút Project" und seiner Umgebung. — Acta Biol. Debrecina, 13:109—119. SATTO, T (1966): Production and distribution of dry matter in forest ecosystems. — Misc. Inform. Tokyo Univ. Forests 16:1—15. WHITTAKER, R. H. (1961: Estimation of net primary production of forest and shrub communities. — Ecology 42:177—180. 105
