tailieunhanh - Báo cáo khoa học: "Impact of several common tree species of European temperate forests on soil fertility"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: Impact of several common tree species of European temperate forests on soil fertility. | Ann. For. Sci. 59 2002 233-253 INRA EDP Sciences 2002 DOI forest 2002020 233 Review Impact of several common tree species of European temperate forests on soil fertility Laurent Augustoa Jacques Rangera Dan Binkleyb and Andreas Rothec a Institut National de la Recherche Agronomique 54280 Champenoux France b Department of Forest Sciences Graduate Degree Program in Ecology and Natural Resource Ecology Laboratory Colorado State University Fort Collins Colorado 80523 USA c Bayerisches Staatsministerium fur Landwirtschaft und Forsten Referat Waldbau und Nachhaltssicherung LudwigstraBe 2 80539 Munchen Germany Received 3 April 2001 accepted 28 September 2001 Abstract - The aim of the present work was to provide a synopsis of the scientific literature concerning the effects of different tree species on soil and to quantify the effect of common European temperate forest species on soil fertility. The scientific literature dealing with the tree species effect on soil has been reviewed. The composition of forest overstory has an impact on the chemical physical and biological characteristics of soil. This impact was highest in the topsoil. Different tree species had significantly different effects on water balance and microclimate. The physical characteristics of soils also were modified depending on the overstory species probably through modifications of the soil fauna. The rates of organic matter mineralization and nitrification seem to be dependent on tree species. A coniferous species Picea abies had negative input-output budgets for some nutrients such as Ca and Mg. This species promoted a higher soil acidification and a decrease in pH. Thus it should not be planted in very poor soils in areas affected by acidic atmospheric depositions. Nevertheless the effect of the canopy species on soil fertility was rarely significant enough to promote forest decline. The impact of a tree species on soil fertility varied depending on the type of bedrock climate and forest .

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