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American Journal Of Agriculture And Horticulture Innovations  
(ISSN – 2771-2559) 
VOLUME 02 ISSUE 11     Pages: 17-20 

SJIF IMPACT FACTOR (2021: 5. 705) (2022: 5. 705)  
OCLC – 1290679216  METADATA IF – 5.625 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
Publisher: Oscar Publishing Services 

Servi 

 

 

 

 

 

 

 

 

 

 

 

 

ABSTRACT 

The paper presents the quantity and quality of salts in the solonchaks of Central Fergana. Soda was found in the profile 

of solonchaks in the amount of 0.08-0.19%. Solonchak vegetation is characterized by high ash content, while it is found 

that in salt marshes of the desert zone, arsenic accumulates in the amount of 7-8 CC, the biological absorption 

coefficient is 1.17-11.9. 

 

KEYWORDS 

Salt marsh, soda, sol, arsenic, accumulation, Clarke concentration, biological absorption coefficient. 

 

INTRODUCTION 

Currently, it has been proven that many trace elements 

significantly affect the soil-forming process and the 

formation of solonchaks in the desert zone. The 

distribution of the quantity and quality of a number of 

  Research Article 

 

HALOGEOCHEMISTRY, BIOGEOCHEMICAL FEATURES OF SALINE 

LANDSCAPES IN CENTRAL FERGANA 
 

Submission Date: November 05, 2022, Accepted Date:  November 15, 2022,  

Published Date: November 30, 2022  

Crossref doi: https://doi.org/10.37547/ajahi/Volume02Issue11-03 

 

 

G. Yuldashev 
Researcher Ferghana State University, Uzbekistan 

 

U. B. Mirzaev 
Researcher Ferghana State University, Uzbekistan 

 

A. Rakhimov 
Researcher Ferghana State University, Uzbekistan 

Journal Website: 

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Copyright: Original 

content from this work 

may be used under the 

terms of the creative 

commons attributes 

4.0 licence. 

 

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Volume 02 Issue 11-2022 18 

                 

 
 

   
  
 

American Journal Of Agriculture And Horticulture Innovations  
(ISSN – 2771-2559) 
VOLUME 02 ISSUE 11     Pages: 17-20 

SJIF IMPACT FACTOR (2021: 5. 705) (2022: 5. 705)  
OCLC – 1290679216  METADATA IF – 5.625 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
Publisher: Oscar Publishing Services 

Servi 

macro-microelements over the genetic horizons of 

soils affect the processes of formation of saline soils 

and solonchaks. During the formation of humus-

accumulative horizons, elements are mainly 

accumulated in the upper part of the soil profile. In the 

process of solonchak formation, macro- and 

microelements are redistributed along the soil profile. 

In this regard, the study of salt marshes, as well as the 

accumulation and redistribution of chemical elements 

in salt marshes, is an urgent problem of science and 

production.   

Object and methods of research: The saline massif-

reserve of the Fergana Experimental Cotton Growing 

Station was chosen as the object of research. As for 

research methods, Dokuchaevka’s morphogenetic 

method was taken as the basis. Agrochemical studies 

were carried out by conventional methods. Elemental 

analysis was carried out by neutron activation analysis 

at the Institute of Nuclear Physics of the Academy of 

Sciences of the Republic of Uzbekistan. 

Research results: The desert solonchaks studied by us 

are characterized as hydromorphic typical alluvial-saz 

soils and belong to the group of soils with progressive 

salinity. Salt marshes typical of saz are distinguished by 

higher degrees of salinity of the entire profile, but a 

significant accumulation of salts occurs in the upper 

horizons. The salt content in the upper layers varies 

within 2-5% of the dry residue. In the underlying 

horizons, the amount of salts is 1.3-4.0%. 

The surface of these solonchaks is sometimes covered 

with a crust 0-3 cm thick. The maximum of salts is 

observed in crustal and subcrustal horizons. The 

accumulation of water-soluble toxic and non-toxic salts 

in the upper 0-3 cm and 3-40 cm layers of the studied 

solonchaks reaches 2.7-3.1%. Moreover, the amount of 

toxic salts, respectively, in these horizons reaches 1.8-

2.2%.  

Quantity and quality of salts, % 

R
el

ea
se

 n
u
m

b
er

 

D
ep

th
, 
cm

 

N
a 2
С
О

3
 

С
a(

H
C

O
3
) 2

 

C
aS

O
4
 

M
g
S

O
4
 

N
a 2

S
O

4
 

N
aC

l 

to
x
ic

 

n
o
n

-t
o
x
ic

 

T
o
ta

l 

1
-s

al
t 

m
ar

sh
es

 

0-3 0,017 0,105 0,737 1,406 0,201 0,603 2,227 0,842 3,069 

3-40 0,017 0,084 0,768 1,213 0,136 0,438 1,804 0,852 2,656 

40-70 0,008 0,089 0,771 1,030 0,146 0,303 1,487 0,860 2,347 

70-120 0,008 0,097 0,598 0,849 0,277 0,245 1,379 0,695 2,074 

120-160 0,017 0,097 0,677 0,885 0,259 0,247 1,408 0,774 2,82 

U.g.w., 

g/l 

0,19 1,647 12,40 13,812 2,707 3,406 19,70 14,47 34,170 

 

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Volume 02 Issue 11-2022 19 

                 

 
 

   
  
 

American Journal Of Agriculture And Horticulture Innovations  
(ISSN – 2771-2559) 
VOLUME 02 ISSUE 11     Pages: 17-20 

SJIF IMPACT FACTOR (2021: 5. 705) (2022: 5. 705)  
OCLC – 1290679216  METADATA IF – 5.625 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
Publisher: Oscar Publishing Services 

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The nature of the distribution of salts in the upper part 

of the soil profile indicates that in these soils the 

process of salt accumulation is replaced by temporary 

desalinization. The type of salinity is chloride-sulfate. 

According to the mechanical composition, the studied 

solonchaks are light and medium loamy. 

In this regard, the humus content in the upper 3-40 cm 

horizon reaches 0.65%, then there is an intensive 

decrease and reaches 0.26%. The ratio of nitrogen to 

carbon in these layers ranges from 5.2 to 6.1. 

The content of carbonates in solonchaks fluctuates in 

the range of 10.2 -15.1%. Soil and groundwater regime 

saz. 

Establishing the average concentration of cyclic trace 

elements in solonchaks is associated with relatively 

great difficulties. This is not surprising, because one 

should take into account the influence of numerous 

factors such as: the concentration of water-soluble 

salts, the quantity and quality of toxic salts, the 

composition and properties of soil solutions, the 

composition and properties of ground and mineralized 

waters, etc. 

The concentration of a number of cyclic chemical 

elements in the solonchaks of Fergana varies in the 

upper 0-3 cm layers within the range of 1.7-28500 

mg/kg. Microelements are arranged quantitatively: Fe 

> Mn > Sr > Zn > Cr > Ni > Co > As > Mo > Sb. A similar 

pattern persists in the underlying horizons. At the 

same time, as expected, there is a slight increase in the 

concentration of iron, manganese, strontium, nickel, 

molybdenum at the horizon of soil-soil contact with 

groundwater, which is associated with gley barriers. 

The presented material testifies to a peculiar regularity 

in the distribution of chemical elements in the 

solonchak profile. Therefore, along with determining 

the amount and average concentration of trace 

elements in general, it is necessary to take into account 

their ability to concentrate and disperse in the horizons 

of the studied solonchaks. For a quantitative 

assessment of chemical elements in the lithosphere, 

V.I. Vernadsky introduced a special indicator - 

concentration clarke (CC), which characterizes the 

deviation of the content of a chemical element in a 

given object from its clarke. 

Based on this, it can be said that strontium gradually 

accumulates in the underlying relatively gypsum, 

carbonate layers of solonchaks, where its fluctuation in 

these horizons varies within 1.56-2.09 CC. There is also 

an increase in the CC of zinc in the range of 1.11-1.45, 

unfortunately, there is a significant increase in the CC 

of arsenic in all horizons of solonchaks in the range of 

6.8-8.12 CC, which is obviously associated with the 

nearby mercury-antimony halos of the deposit. An 

increase in the CC of molybdenum and antimony is also 

observed. 

The content of other studied elements such as Fe, Mn, 

Cr, Ni, Co is below their clarke values, according to 

Dobrovolsky, it is not concentrated in solonchaks. The 

series of scattering clarks repeat the patterns of 

distribution of concentration clarks in reverse order, 

that is, the studied elements in the upper 0-3 cm layer 

in this regard occupy the following distribution series: 

Ni >  Mn >  Fe >  Sr >  Co >  Cr  >  Zn >  Sb >  Mo >  As. 

Solonchak vegetation is characterized by high ash 

content. Their sols are dominated by chlorides, sulfates 

of sodium and alkaline earth elements. 

CONCLUSION 

 Thus, in the desert hydromorphic solonchaks of 

Central Fergana, a high degree of arsenic accumulation 

is observed, CC, which reaches 7-8, and KP ranges from 

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Volume 02 Issue 11-2022 20 

                 

 
 

   
  
 

American Journal Of Agriculture And Horticulture Innovations  
(ISSN – 2771-2559) 
VOLUME 02 ISSUE 11     Pages: 17-20 

SJIF IMPACT FACTOR (2021: 5. 705) (2022: 5. 705)  
OCLC – 1290679216  METADATA IF – 5.625 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
Publisher: Oscar Publishing Services 

Servi 

0.12-0.16. There is an accumulation of molybdenum and 

antimony. Molybdenum and cobalt tend to accumulate 

in solonchak plants, the coefficient of biological 

absorption of which, respectively, fluctuates in the 

range of 1.66-11.31 and 1.12-1.38, the remaining 

elements are captured by solonchak plants. 

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