Factors and mechanisms of soil salinization under vineyards of southern Taman

Хитров, Н. Б.; Черников, Е. А.; Popova, V. P.; Fomenko, T. G.

doi:10.1134/s1064229316110053

Cited by 8 publications

(3 citation statements)

References 5 publications

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“…The area of soil salinization in the Hetao Irrigation District of Inner Mongolia is about 330,000 hm 2 , accounting for 63% of the total cultivated area. Soil salinization has become one of the prominent problems of land in today's society [28][29][30], so many scholars have explored the effects of different factors on soil salinization with a view to providing a theoretical basis for improving and preventing soil salinization [31][32][33][34][35].…”

Section: Discussionmentioning

confidence: 99%

Water–Salt Migration Patterns among Cropland–Wasteland–Fishponds in the River-Loop Irrigation Area

Yu,

Shi,

Miao

et al. 2024

Agronomy

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In order to investigate the influence of freshwater fish ponds on water and salt transport in cultivated wasteland in salinized areas, a typical study area was selected in the middle and lower reaches of the Hetao Irrigation District in China in the Yichang Irrigation Domain, and the temporal and spatial changes in the salinity of soil and salinity of groundwater and fish pond water in the cultivated–wasteland–fish pond system were characterized through the monitoring of the environmental information of soil and groundwater at the boundaries of the cultivated land, wasteland, and fish ponds. Salinity changes and groundwater migration in different periods were determined, and the response of soil salinity to the depth of groundwater burial was analyzed, as well as the effect of fish ponds on soil salinization. The results showed that the amount of groundwater migrating from cropland to wasteland during the simulation period in 2022 was 2700 m3, the amount of groundwater migrating from wasteland to fish ponds was 630 m3, and the amount of groundwater migrating from fish ponds to wasteland during the fall watering period was 440 m3. From an overall perspective, the average soil salinity of wasteland was 1.56 times higher than that of the boundary of fish ponds. Not only do fish ponds play a positive role in the ecosystem, but they also have a desalinization effect that reduces soil salinity significantly. Groundwater depth and soil salinity have an exponential relationship; when the depth of groundwater is greater than 1.75 m, the soil salinity varies little with the depth of groundwater and the soil salinity is less than 0.66 ds/m, which can be determined as the critical depth, and the average depth of groundwater in cultivated land in the study area is 1.5 m. Therefore, it is necessary to reasonably control the water level of fish ponds, so as to make the groundwater depth of cultivated land control between 1.75 m and 2.0 m, and to prevent soil salinization.

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Section: Discussionmentioning

confidence: 99%

Water–Salt Migration Patterns among Cropland–Wasteland–Fishponds in the River-Loop Irrigation Area

Yu,

Shi,

Miao

et al. 2024

Agronomy

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“…In the southeastern part of Uzbekistan this problem acquires a special dimension in connection with the intensive conduction of agriculture that, in turn, is connected with the very dense population of the Fergana valley region [7]. Salinization of soils has stretched far to the north; now saline soils have become typical not only for the southern regions of Russia, but also for the central sub-boreal regions, while they have increased their spread in the traditional areas of saline soil distribution [8,9]. Thus, soil salinization, previously restricted to traditional ranges associated with the geochemistry of the landscapes and water hydrochemistry has become a typical process for many soil types.…”

Section: Introductionmentioning

confidence: 99%

Biogeochemical State of Salinized Irrigated Soils of Central Fergana (Uzbekistan, Central Asia)

Turdaliev,

Askarov,

Abakumov

et al. 2023

Applied Sciences

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The Central Fergana region is one of the overpopulated regions of Central Asia, which includes parts of Uzbekistan, Kyrgyzstan, and Tajikistan. Here, in the dry subtropical climate are the most ancient, irrigated oases used for agriculture. Fergana valley is the key to the food security of the region as a whole. The article provides information on diversity and chemical composition of newly developed, new and old-irrigated Calcisols soils formed on alluvial and alluvial–prolluvial sediments. Soils are poor with organic matter (0.37–0.81% of organic carbon), with high nitrogen content (C/N ratio is 4.92–5.79), and with neutral (7.01–7.30) pH values. Data on the content and the ratio of the key components of soil salinity (Na2CO3, Ca(HCO3)2, CaSO4, MgSO4, Na2SO4, NaCl) and the bulk content of salts in soils under different irrigation regimes are presented. It was shown that Na2CO3 concentration is minimal in all the soils, and this salt presents only in ground waters (0.100–0.135 g L−1). Newly irrigated soils are characterized by higher content of salts than old irrigated soils. All the soils investigated are characterized by increasing salinity rate within the soil depth with the highest content of all salts in ground waters. This chloride–sulfate type of salinization is most pronounced in all the soils studied. Gypsum content in agricultural soils results in limited water and nutrient retention and the potential for dissolution, primarily in response to irrigation. The soils of the Fergana Valley are also subjected to polychemical pollution, so the content of trace elements in them was studied. Irrigated meadow-takyr and meadow-saz soils show low levels of environmental hazard, but irrigation results in accumulation of such trace elements as nickel (30 mg kg−1), arsenic (11.75 mg kg−1), bromine (5.00 mg kg−1), antimony (1.48 mg kg−1), cesium (5.00 mg kg−1), and hafnium (2.97 mg kg−1). Irrigation also affects the soil texture and thus increases fine particle percentages in the superficial soil horizons. Thus, the complex chemical characteristics of salinized soils are presented for numerous irrigated landscapes of the region.

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“…В последние годы большое внимание уделяется изучению комплекса микроскопических грибов, так как микробное сообщество почвы служит чутким индикатором степени антропогенной нагрузки на экосистему [2, 3,4], которая приводит к деградации почвы, ухудшая её свойства [5,6,7]. В результате отмечают такие явления, как нарушение почвенной структуры, переуплотнение, ухудшение водно-физических свойств, одновременно снижается и биологическая активность почвы [8,9].…”

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Composition of Soil Micromycetes in Different Systems of Soil Maintenance in Grape Plantations

Luk'yanov¹

2020

Vestnik of Kazan State Agrarian University

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The aim of the research was to study the composition of soil micromycetes with different systems of soil maintenance on vine plantations. The studies were carried out in the farms of Anapa district of Krasnodar Kray according to generally accepted methods in soil science and mycology. The scientific novelty lies in the insufficient knowledge of soil fungi of ampelocenoses under conditions of increased anthropogenic impact. As a result of research in 2019, it was found that the largest number of colony-forming units of micromycetes in the soil was observed in the variant with sodding. The number of КОЕ in 1 gram of absolutely dry soil in the variant with sodding in May exceeded the variant with black fallow by 5 times, and in August by 2 times. Species diversity was represented by 11 species belonging to 8 genera: Mucor, Trichoderma, Penicillium, Aspergillus, Fusarium, Alternaria, Cladosporium, Vertecillium. In the complex of the isolated micromycetes in the variant with sodding in the spring, the species of r. Trichoderma. Its frequency of occurrence was 80%. On the black fallow in this period, the dominant position was occupied by the species of the r. Penicillium (30.4%). In the summer period, in the variant with turfing, the species of the genera Fusarium, Alternaria, Cladosporium, Vertecillium were isolated with a higher frequency of occurrence, while the dominant position was occupied by species of the r. Penicillium (27.4%). In the variant with the system of soil maintenance, black fallow species dominated Penicillium and Aspergillus. The number of micromycetes in the soils of ampelocenoses depends on the system of soil maintenance and environmental conditions, while a regrouping of the species composition of fungi is observed.

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Factors and mechanisms of soil salinization under vineyards of southern Taman

Cited by 8 publications

References 5 publications

Water–Salt Migration Patterns among Cropland–Wasteland–Fishponds in the River-Loop Irrigation Area

Water–Salt Migration Patterns among Cropland–Wasteland–Fishponds in the River-Loop Irrigation Area

Biogeochemical State of Salinized Irrigated Soils of Central Fergana (Uzbekistan, Central Asia)

Composition of Soil Micromycetes in Different Systems of Soil Maintenance in Grape Plantations

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