Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế, đề tài: "Effect of ozone article and sulphur dioxide on of Pinus halepensis Miller. | Ann Sci For 1996 53 849-856 Elsevier INRA 849 Original article Effect of ozone and sulphur dioxide on mycorrhizae of Pinus halepensis Miller G Diaz1 o Barrantes2 M Honrubia1 c Gracia2 1 Dept Biolog fa Vegetal Fac Biologia Univ Murcia 30100 Murcia 2 Creaf Univ Autónoma de Barcelona Barcelona Spain Received 29 January 1995 accepted 18 September 1995 Summary - Little information exists on the effect of ozone O3 and sulphur dioxide SO2 on Pinus halepensis Miller. The objective of this work was to determine the effect of these gaseous pollutants alone or in combination on biomass and mycorrhizae of p halepensis. Seedlings were treated for 1 year with filtered air control 50 ppb o3 40 ppb so2 or a mixture of 50 ppb o3 40 ppb so2. O3 and SO2 treatments had no significant effect on shoot and root biomass and a slight reduction on percentage of mycorrhizal colonization was noted with so2. However these parameters were significantly reduced when the pollutants acted in combination. Morphological alterations of mycorrhizae were also noted with a reduction in the coralloid structures in favour of simple ones. Moreover a change in species composition was observed the ectomycorrhizae probably formed by Suillus species being replaced by ectendomycorrhizae in the O3 so2 treatment. biomass mycorrhizae Pinus halepensis ozone sulphur dioxide Resume - Effet d Oa et so2 sur les mycorhizes de Pinus halepensis Miller. Les informations concernant I effet d O3 et SO2 sur Pinus halepensis Miller sont rares. L objectif de ce travail était de determiner I effet de ces polluants gazeux seuls OU en combinaison sur la croissance et les myco-rhizes de p halepensis. Des semis ont été soumis pendant 1 an à de fair purifie témoin 50 ppb O3 40 ppb SŨ2 OU la melange de 50 ppb O3 40 ppb SŨ2. Les traitements O3 et SO2 n ont pas eu d effet significatif sur la masse des tiges et des racines ni sur le pourcentage de colonisation mycorhizienne. Dependant ces paramètres ont été significativement réduits .
