CHANGES OF ECOLOGICAL-GEOCHEMICAL STATE OF TOPSOIL AND RIVER SEDIMENTS IN VILNIUS

The changes of environmental quality were revealed according to temporal differences of additive contamination indices calculated for topsoil and sediments of N eris and V okė r ivers i n V ilnius. T opsoil contamination indices were calculated on the basis of Ag, Ba, Co, Cr, Cu, Mn, Mo, Ni, Pb, Sn, V and Zn contents for 2 different periods (1985 and 1996-2002) and their comparison was realised on 237.86 sq. km territory of the first sampling. The areas, where topsoil ecological-geochemical state has worsened have been determined. Part of them with unallowable topsoil pollution level indicates the quarters, where population health risk increase is possible. Monitoring is necessary there, also health protection measures. The tendency of improvement of ecologicalgeochemical state of river sediments is observed, but potential sources of secondary pollution in sediments can be hazardous for downstream segments

CHEMICAL COMPOSITION OF TILE GLAZE AS POTENTIAL SOURCE OF SOIL CONTAMINATION

The paper deals with the chemical composition of coloured glaze of 16 tiles from restored furnace of Biržai castle. It demonstrates that glaze is enriched with different elements compared to soil and therefore can be one of the multiple contamination sources of soil, especially in the old urban quarters. High variability of element contents in glaze is predetermined by its colour. However, Bi, Sb, Ag, Pb, Sn, Cu are elements-indicators of coloured glaze chemical composition. 1 g of coloured glaze added to 1 kg of soil causes at least medium level of local contamination

GEOCHEMICAL INVESTIGATION OF URBANISED TERRITORIES FOR NATURE PROTECTION

Complex geochemical investigations including topsoil, river sediments, water and sediments of dug wells that have been accomplished in Panevezys by Geochemistry department of the Institute of Geology are presented. The methods that were used are described and the main obtained results discussed

Disturbance of element uptake in the needles of scots pine under influence of ammonia pollution

Vytauto Didžiojo universitetasŽemės ūkio akademij

Obelų, augančių azoto trąšų gamyklos poveikyje, mitybinės būklės įvertinimas

The aim of the study was to evaluate changes in the content of macronutrients (N, P, Ca, Mg and Fe), microelements (Mn, Zn, Cu, B, C, Mo) and nonessential elements (Ti, V, Cr, Pb, Ba, Ni, Ag, Al, Sr, Sn) in the leaves of apple-trees in the nitrogen fertilizer factory area , the main industrial pollution source in Lithuania. As a control, a garden in a „relatively clean“ district (Babtai) was selected. A deficiency (<2.1-2.4 %) of the nitrogen in the leaves of apple-trees was documented in the investigated sites. The greatest amount of P was determined in the leaves collected from control trees, where deficiency of the nitrogen was the highest. According to our results, we maintain that apple-trees growing in Babtai garden sustain deficiency of N, Ca, Fe, Zn and greatlyaccumulate P and Ba. Apple-trees growing in the vicinity of nitrogen fertilizer factory sustain the deficiency of N, Ca, Mn, B and Zn; and accumulate P, Fe, and Mo greater than optimum content. Under the influence of nitrogen fertilizer factory, accumulation of some heavy metals (Fe, Mo, V, Ti, Pb) in the leaves of apple-trees may occurKauno medicinos universitetasLietuvos sodininkystės ir daržininkystės institutasVytauto Didžiojo universitetasŽemės ūkio akademij

Nutritional diagnosis of apple-tree growing in the nitrogen fertilizer factory region

Vytauto Didžiojo universitetasŽemės ūkio akademij

B-13 nutritional diagnosis of apple-trees growing in the regions with different industrial emissions

Lietuvos sodininkystės ir daržininkystės institutasLietuvos sodininkystės ir daržininkystės institutas, [email protected] Didžiojo universitetasŽemės ūkio akademij

Present cement dust pollution still effects Scots pine (Pinus sylvestris L.)

Up-to-date field studies and monitoring document cement pollution impact on forests (Farmer, 2002). In Lithuania, since the 1990s, reduced level of emissions in a cement factory (CF) caused further adverse changes in the surrounding forests and some disturbances were registered in the ongoing decade. The present study was aimed to evaluate whether present level of pollution caused by the cement factory affects nutrition and general vitality of Scots pine (Pinus sylvestris L.) growing along 10 km transect. Sites near the CF differed in the amounts of aerial sulfur dioxide up to 9 times. The highest total deposition of calcium, potassium and sulphur reached 4.9 kg Ca ha-1 month-1 (creating 12-24 times differences between sites), 0.9 kg K ha-1 month-1 and 2.0 kg S ha–1 month–1 respectively and bark acidity (pH) of the transect pines ranged between 6.5 and 5.1. The concentration of 29 elements (N, P, Ca, Mg, Mn, Fe, Zn, B, Cu, Co, Mo, Al, Sr, Ba, Ti, Ni, Cr, Pb, V, Ag, Zr, La, Li, Nb, Y, Ga, Sc, Sn, Yb) were determined in the soil samples and 23 elements (C,N, K, P, Ca, S, Mg, Mn, Fe, Zn, B, Cu, Co, Mo, Al, Sr, Ba, Ti, Ni, Cr, Pb, V, Ag) in the needles of pine. In addition, on the surface of the needles Ca and some other elements were analysed. Significant differences between the stands were found according to the concentration of most elements. The highest concentrations of some nutritional elements – Fe, Mg, Mo, Cu and nonessential elements – Al, Ti, Sr, Ba, Cr, Pb, V, Ag were found in the needles of pines growing in the most polluted site. Relations between the cement dust, the needle, needle surface and soil elemental concentrations are discussed. Elevated concentrations of non-essential elements in the needles of pines growing in the most polluted area around the factory might be a reason of the worst condition of the treesChemijos institutasVytauto Didžiojo universitetasŽemės ūkio akademij