Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: "Fluxes of dissolved mineral elements through a forest ecosystem submitted to extremely. | 147 AnnSciFor 1993 50 147-157 Elsevier INRA Original article Fluxes of dissolved mineral elements through a forest ecosystem submitted to extremely high atmospheric pollution inputs Czech Republic E Dambrine 1 V Kinkor 2 J Jehlicka 2 D Gelhaye 1 1INRA-CRF Champenoux 54280 Seichamps France 2 Geological Institute Malostranske 19 11821 Prague Czech Republic Received 3 September 1992 accepted 20 December 1992 Summary Fluxes of dissolved mineral elements have been monitored in a declining spruce stand in northern Bohemia. This area is subjected to very high atmospheric pollution. Mean annual throughfall pH was and monthly mean values as low as were recorded. Measurements show deposition values per ha and per year as high as 150 kg s 60 kg Ca and 12 kg Al as well as a proton input 5 keq ha yr H . Part of the input was immobilized in the litter layer and the remaining acid load was buffered by Al release in the mineral horizons. High nutrient inputs may explain why no mineral deficiencies have been detected although tree mortality is extremely high in this area. atmospheric pollution acidification forest soils forest decline I Czech Republic Resume Flux d elements minéraux dans un écosystème forestier hyper-pollué du nord de la Bohème Réblique tchèque . Les flux d elements minéraux en solution dans un peuplement d epicea dépérissant du nord de la Bohème ont été mesurés au cours de I annee 1989. Cette region subit une effroyable pollution atmosphérique due à I exploitation minière et à la combustion de lignite riche en soufre et en cendres dans un bassin industriel voisin ainsi que dans plusieurs centres industriels du sud de I Allemagne ex-RDA . Nous avons mesuré des depots atmosphériques sous le couvert forestier considerables respectivement 150 kg de s 60 kg de Ca 46 kg de N 12 kg d AI par ha et par an. Ces valeurs environ 5 fols supérieures à celles couramment mesurées dans les peuplements vosgiens sont attribuables aux emissions importantes de cendres de .
