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Hence, the micromorphology suggests that the quartz grains of the studied sediments have an unexpectedly heterogeneous origin of aeolian and fluvial processes, as well as the anticipated glacial origin. The content of these grains groups varies for the sediments of different origin. The heavy minerals and magnetic data provide information about provenance differences and reflect the influence of the Scandinavian sources but not the transport processes as surface micromorphology data. The data obtained characterize the historian-genetic sequence of events of glacial morpholithogenesis that can be considered as a certain trend of the change in properties of sediments of different origin. These sediments (predominantly cover loams on the top surfaces) are the parent rocks for soils and can provide important information for palaeoenvironmental reconstructions. REFERENCES 1. 2. 3. 4. 5. 6. 7. Alekseeva V.A. 2003. Data on the transport and diagenetic transformation of quartz grains and their palaeogeographical interpretation (in the Upper Don River Basin). Vestnik Moskovskogo Universiteta, sec. 5 Geography, 4, 40-46 (in Russian). Alekseeva V.A., Hounslow M.W. Sediment provenance determination using discrete and included magnetic particles: a comparison with petrographic methods (in pres.). Complex analysis of the quaternary sediments of the Satino practice territory (ed. by G.Rychagov and S.Antonov). 1992. Moscow State Univ. Press, Moscow, 18-19, (in Russian). Higgs R. 1979. Quartz-grain surface features of Mezozoic-Cenozoic sands from the Labrador and Western Greenland continental margins. Journal of Sedimentary Petrology, 49, 599-610. Krinsley D.H.; Donahue J. 1968. Environmental interpretation of sand grain surface features by electron microscopy. Geol.Soc.America Bull., 79, 743-748. Krinsley D.H.; Doornkamp J.C. 1973. Atlas of quartz sand surface textures, Cambridge, Cambridge Univ. Press. Rogov V.V. 2000. The peculiarities of morphology of particles of cryogenic weathering products. The Earth’s Cryosphere , vol.IV, 3, 67-73 (in Russian). 22
OXYGEN STRESS IN THE ROOT ZONE AND PLANT RESPONSE (SOME EXAMPLES) Balakhnina T.I., Bennicelli R.P., Stępniewska Z., Stępniewski W. One of the essential negative consequences of the soil flooding is oxygen deficiency in the tissues of the submerged plants. Oxygen deficiency effects the intensity and the direction of a number of physiological and biochemical reactions and induces oxidative stress in the plant cells ( Bennicelli et al. 1998, Blokhina et al., 1999; Hunter et al., 1987; Yan et al., 1996, Zakrzhevsky et al. 1995). Under optimal conditions the content of reactive oxygen species (ROS) maintains, with the help of antioxidative defence system, at a level which is safe for the organism (Larson, 1988). Enzymes of superoxide dismutase and ascorbate – glutathione pathway eliminate the excess of Н 2 О 2 in chloroplasts, in the cytoplasm and in non photosynthesizing tissues (Foyer and Halliwell, 1976). Under stress conditions the formation of ROS can exceed the antioxidative potential of the cell and cause an oxidative damage (Halliwell, 1984). The plant capability to activate the defense system against oxidative destruction may be a key link in the mechanism of plant tolerance to unfavorable conditions. Changes in the activity level of one or more antioxidative enzymes are connected with the plant resistance to stressor action (Allen, 1995). The aim in this paper was to shown response of stomatal resistance (R d ) on the examples of some plants: Triticum aestivum L., Triticale L., Zea mays L.,Pisum sativum L.reaction planted on unfavorable soil conditions through hypoxia to anoxia conditions. As the indicators of soil aeration conditions Oxygen Diffusion Rate (ODR) and redox potential (Eh) were used as described by Gliński and Stępniewski (1985). MATERIALS AND METHODS The experiments were performed with the use of Triticum aestivum L., Triticale L., Zea mays L.,Pisum sativum L under growth chamber in plastic pots, 5.9 dm 3 in volume, filled with soil material from the Ap horizon of a brown loess soil (Orthic Luvisol) of pH in H 2 O - 7.3 (pH in KCl - 7.1) containing 0.89% C org , 15% of 1 -0.1m fraction, 80% of 0.1-0.002 mm fraction, and 5% clay. Each pot contained 6.2 kg of soil (dry mass basis) packed to a bulk density 1.35 Mg m -3 corresponding to total porosity 48% v/v . The air temperature was kept at 23±2 о C and 12±2 о С during the day and night, respectively. The day period was 12 hours with the light intensity of 190 Wat m -2 . The relative air humidity in the growth chamber was 45±5% during the day and 70±5% during the night. 23
Page 2 and 3: PHYSICS, CHEMISTRY AND BIOGEOCHEMIS
Page 4 and 5: IN MEMORIAM Dr Ludmila Petrovna Kor
Page 6 and 7: magnetic (ferrimagnetic) oxides, ma
Page 8 and 9: educed water activity, would favour
Page 10 and 11: In this paper AT sorption by surfac
Page 12 and 13: were obtained with clay content, pH
Page 14 and 15: In present investigation the quartz
Page 18 and 19: As the indicators of soil aeration
Page 20 and 21: Stomatal diffusive resistance of th
Page 22 and 23: indicators of soil aeration conditi
Page 24 and 25: REFERENCES 1. 2. 3. 4. 5. 6. 7. 8.
Page 26 and 27: Table 1. Breakdown of numbers and t
Page 28 and 29: MORPHOLOGICAL AND PHYSICOCHEMICAL P
Page 30 and 31: conditions, existing at the first p
Page 32 and 33: INFLUENCE OF TEMPERATURE ON WATER P
Page 34 and 35: moisture % 100 90 80 70 60 50 40 so
Page 36 and 37: STATE OF MICROBIAL COMMUNITIES IN M
Page 38 and 39: million cells/g soil 25 20 15 10 5
Page 40 and 41: THE INFLUENCE OF COMPOSITION AND PR
Page 42 and 43: days grew faster than on substrate
Page 44 and 45: SOIL SALINITY AND CLIMATE CHANGES I
Page 46 and 47: POROUS STRUCTURE OF NATURAL BODIES
Page 48 and 49: These nonuniform classification sys
Page 50 and 51: Mercury intrusion data are plotted
Page 52 and 53: METHOD AND MATERIALS The shear stre
Page 54 and 55: wheat flour NaCl salt fine milk Fig
Page 56 and 57: The shear experiments revealed two
Page 58 and 59: Variable charge of mineral surfaces
Page 60 and 61: 3. Huffaker RC and Wallace A 1958 P
Page 62 and 63: Q V (pH)/N t = α(pH) = n ∑ i= 1
Page 64 and 65: REFERENCES 1. De Wit, J.C.M, Van Ri
Page 66 and 67:
BM - biomass; NM - necromass; MM -
Page 68 and 69:
thousand times at the absence of co
Page 70 and 71:
. m 131.5 131.0 I Height above sea
Page 72 and 73:
SEASONAL VARIABILITY OF SOIL WATER
Page 74 and 75:
The mean difference (MD) and the ro
Page 76 and 77:
Acknowledgement This paper presents
Page 78 and 79:
1992; Selim 1999). The relative imp
Page 80 and 81:
1.0 C rel 0.5 0.0 v=0.7 D=3.28 v=0.
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1.0 a b C rel 0.5 0.0 0 1 2 3 0 1 2
Page 84 and 85:
Comparison of before- and after-pul
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provides the accessibility of catio
Page 88 and 89:
MODEL RESEARCH ON FORMATION OF SYNT
Page 90 and 91:
The analysis of the specific surfac
Page 92 and 93:
PHOSPHATE-INDUCED CHANGES IN THE SP
Page 94 and 95:
According to the data of Table 1, t
Page 96 and 97:
MINERAL-ORGANIC COMPOUND OF SOILS:
Page 98 and 99:
RESULTS AND DISCUSSION An analysis
Page 100 and 101:
INTRODUCTION CHEMICAL DEGRADATION O
Page 102 and 103:
of organic particles and their elec
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HNO 3 -extractable form is very clo
Page 106 and 107:
Results demonstrated that Pb and Cd
Page 108 and 109:
tion was measured using the Tjurina
Page 110 and 111:
OUTPUT FLUXES OF LEAD IN FOREST ECO
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Regional data on Pb concentrations
Page 114 and 115:
DEVICE FOR EVALUATION OF THE RAPE P
Page 116 and 117:
SPECTROSCOPIC COMPARISON OF HUMIC A
Page 118 and 119:
ehavior of sequentially extracted H
Page 120 and 121:
MODERN MONITORING SYSTEMS FOR THE M
Page 122 and 123:
The control of the measurement syst
Page 124 and 125:
ASORPTION AND SURFACE AREA OF SOILS
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Nm xCBET N = ( 1− x BET − )[ 1+
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According to this, when x/N (1-x) i
Page 130 and 131:
POTENTIAL OF AZOLLA CAROLINIANA TO
Page 132 and 133:
The decrease of Pb(II) and of Cd(II
Page 134 and 135:
12. 13. 14. 15. 16. Piechalak, A.,
Page 136 and 137:
Kloc, 2001]. Nitrogen adsorption is
Page 138 and 139:
This is worth noting that the lower
Page 140 and 141:
N ( h) 1 2 γ ( h) = [ ( ) ( )] ( )
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Exemplary spatial distributions (sa
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This is worth noting that significa
Page 146 and 147:
adsorbed chemicals to microorganism
Page 148 and 149:
were detected in the untreated soil
Page 150 and 151:
0.4 1000 Moisture [Vol.] 0.3 0.2 0.
Page 152 and 153:
NITROUS OXIDE EMISSION FROM SOILS W
Page 154 and 155:
N2O-N [mg kg -1 ] 100 80 60 40 20 0
Page 156 and 157:
LITERATURE 1. 2. 3. 4. 5. 6. 7. 8.
Page 158 and 159:
where v(t) - CO 2 production rate;
Page 160 and 161:
carbon was involved mainly into mic
Page 162 and 163:
Demkin Vitaliiy DrSc Dmitrakov Leon
Page 164 and 165:
Priputina Irina PhD Rudko Tadeusz P
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