C - Lublin

More documents

Recommendations

Info

IN MEMORIAM Dr Ludmila Petrovna Korsunskaja August 17, 1946 1966-1971 student of Donetcky State University, 1972-2004 worker of Institute of Physicochemical and Biological Problems in Soil Science of RAS, • junior researcher of Physicochemical Laboratory (1972-1982) • researcher of the laboratory of Bioproductivity of Agrocenoses (1982-1988) • senior researcher of the laboratory of Massand Energy Transfer in Soils (1988-2001) • senior researcher of the “Soil-Ecological Station” laboratory (2001-2004) February 14, 2004 Participants of the workshop use the opportunity to sacrifice this page for Dr. Luda Korsunskaja, excellent soil physicist and chemist, and our best friend, who unexpectedly leaved us just few days ago. She will live in our memories. Words are not suitable to describe the loss. Our memories will be helping us to imagine our caring, compassionate, energetic, and witty colleague and friend. Dr. L. P. Korsunskaja has made an important contribution in understanding and predicting solute transport in structured soil, which is the most difficult and challenging field in modern soil physics. She has advanced soil physics by applying fundamental advances and techniques of physical chemistry. It has been a pleasure to work with Luda as she was most reliable, knowledgeable, responsible, and helpful partner. The first thing to recall is her kindness, compassion and smile. This will stay with all of us and will help all of us. Yakov Pachepsky Soil Scientist Agricultural Research Service United States of America 5
MECHANISMS OF FORMATION AND OCCURRENCE OF IRON OXIDES IN SOILS – RELATIONSHIP TO VARIOUS ENVIRONMENTAL CONDITIONS. Alekseev A.O., Alekseeva T.V., Maher B.A Iron oxides and hydroxides play an important role in soil science and environmental research. There are thirteen “iron oxides” known to date. The more important and predominant in soil science, mineralogy, geology Fe oxides are the following: goethite, hematite, lepidocrocite, ferrihydrite, maghemite and magnetite, akaganeite, feroxyhyte. The significance of Fe- compounds and importance of Feoxides as suitable indicators of certain pedogenic environments has been recognized by many researchers. Fe-oxide minerals form under the influence of the common soil forming factors (temperature, moisture, pH, Eh, etc), and therefore reflect the pedoenvironmental conditions under which they have formed. In the modern literature, extensive material exists regarding the basic tendencies of formation and transformation of iron minerals in sediments and soils of different climatic zones. However, this kind of information for soils of the steppe and semidesert zone is limited, as traditionally it was considered that in these geochemical conditions iron minerals are stable and, therefore, their indicative role for soil forming processes is not important. There are also a number of methodical difficulties of diagnostics of iron minerals, because of the rather small content of iron and its forms in soils of these climatic zones. Here, the results of analysis of steppe and semidesert soils obtained with a range of magnetic and more traditional mineralogical methods are presented. The most interest for our studies is the sensitivity of certain soil iron compounds to climate and environmental changes. Schwertmann (1988) demonstrated (mostly on the basis of bulk X ray diffraction analyses and chemical analyses) the response of haematite and goethite to different, climatically-driven pedogenic regimes. For example, the goethite-haematite ratio in soils varies systematically along climatic, hydrological and topographic transects. Our data for steppe zone had shown the active role of the Fe in soil-geochemical processes (oxidation media, neutral and/or alkaline conditions) what permits to use its state as informative indicator of soil-geochemical processes under the impact of natural and anthropogenous factors. Obtained data demonstrate that iron state reflects environmental conditions not only on macro- (geochemical landscape), but on microscale (soil aggregates). Environmental magnetism methods are now of wide use for the soils study .The magnetic properties of soils are often dominated by formation of the strongly 11
Page 2 and 3: PHYSICS, CHEMISTRY AND BIOGEOCHEMIS
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 16 and 17: Hence, the micromorphology suggests
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.
Page 82 and 83:
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
Page 86 and 87:
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
Page 104 and 105:
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
Page 112 and 113:
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
Page 126 and 127:
Nm xCBET N = ( 1− x BET − )[ 1+
Page 128 and 129:
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) = [ ( ) ( )] ( )
Page 142 and 143:
Exemplary spatial distributions (sa
Page 144 and 145:
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
show all

C - Lublin

Create successful ePaper yourself

Delete template?

Save as template?