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Báo cáo khoa học: "Amounts of litter fall in some pine forests in a European transect, in particular Scots pine"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: Amounts of litter fall in some pine forests in a European transect, in particular Scots pine. | 625 Ann. For. Sci. 56 1999 625-639 Inra El sevier Paris Original article Amounts of litter fall in some pine forests in a European transect in particular Scots pine Bjorn Berga Arne Albrektsonb Matty p. Bergc Jordi Cortinad Maj-Britt Johansson6 Antonio Gallardof Manuel Madeira8 Juli Pausash Werner Kratz Ramon Vallejo Charles McClaughertyk a Department of Soil Ecology P.O. Box 101251 University of Bayreuth 95448 Bayreuth Germany 15 Department of Silviculture Swedish University of Agricultural Sciences 901 83 Umeả Sweden c Department of Ecotoxicology and Ecology Free University of Amsterdam 1081 HV Amsterdam The Netherlands d Departament de Ecologia University of Alicant Ap. 99 03080 Alicant Spain e Department of Forest Soils P.O. box 7001 Swedish University of Agricultural Sciences 750 07 Uppsala Sweden Department of Ecology University of Seville Seville Spain 8 Institute Superior de Agronomia Departamento de Ciencias do Ambiente Tapoda da Ajuda P-1399 Lisbon Codex Portugal 11 Centro de Estudios Ambientales del Mediterraneo CEAM Carrer 4 Sector Oest Parc technologic 46980 Paterna Valencia Spain i Department of Biology Grunewaldstrasse 34 121 65 Berlin Germany J Departament de Biologia Vegetal Fac. de Biologia Univ de Barcelona Av. Diagonal 645 Barcelona Spain k Department of Biology Mount Union College Alliance Ohio 44601 USA. Received 21 September 1998 revised 15 March 1999 accepted 16 June 1999 Abstract - Pine litter fall data mainly needle litter were available for 64 plots in a transect from the Arctic Circle in Fennoscandia 41 plots to southern Spain 22 further plots in continental Europe and one in the American Midwest . Data originated from a total of eight pine species. Regressions were calculated mainly for needle litter fall and to some extent for total litter fall. We obtained a highly significant linear relationship for needle litter fall and latitude R2adj 0.285 n 58 p 0.001 when using needle litter fall data from all pine species. Combining sites in .