Post on 18-Mar-2022
Assessment of the State of Soil
Salinity for Analysis of
Geochemical Stability of
Landscapes in Dry Areas
German Kust, Olga Andreeva
Variety of manifestations of saline soils in landscape: saline elevations
0
20
40
60
80
100
0
20
40
60SO4 Cl HCO3 Ca Mg Na
Variety of manifestations of saline soils in landscape: saline depressions 0
50
100SO4 Cl HCO3 Ca Mg Na
0
50
100SO4 Cl HCO3 Ca Mg Na
0
100
SO4 Cl HCO3
Variety of manifestations of saline soils in landscape: drained elevations and depression but saline slopes
0
20
40
60
-25 -15 -5 5 15 25
SO4 Cl HCO3 Ca Mg Na
0
20
40
60
-30 -20 -10 0 10 20 30
SO4 Cl HCO3 Ca Mg Na
-10
10
30
50
70
90
-10 -5 0 5 10
Variety of manifestations of saline soils in landscape: several salt maximums in soil profile
0
20
40
60
80
100
120
-4 -3 -2 -1 0 1 2 3 4
SO4 Cl HCO3 Ca Mg Na
0
20
40
60
80
SO4 Cl HCO3 Ca Mg Na
0
50
100
150
200
SO4 Cl HCO3 Ca Mg Na
Working hypothesis: All saline soils are unstable, aren’t they?
Salinization Desalinization
Irregular
But what about saline landscapes?Ancient dried deltaic landscapeAbandoned agricultural landsRecent desertification, arable zone
But what about saline landscapes?
1985 2015
Natural
Agrarian
Geochemical stability of saline landscapes (general scheme)