Methodology of Comparison and Classification of Eroided Land in Azerbaijan
Journal Title: Biomedical Journal of Scientific & Technical Research (BJSTR) - Year 2017, Vol 1, Issue 2
Abstract
The results of the conducted studies revealed that soil erosion agitatedly reduces the humus content. If the reserves of 0-50 cm of the layer are not washed away by mountain- Brown soils - 168 tons per hectare, in a very weakly washed-156t / ha, slightly washedoff 135 tons / ha, medium-washed-108 tons / ha, strongly washed -65 T / ha, and in very strongly washed-32 c / ha. In eroded soils not only reduce the content of common humus, but changes and its qualitative structure, narrows the ratio of carbon to nitrogen, thereby increasing the amount of fulvic acid and reduces the coefficient of mobile forms of humic acids, etc. Fertile, eroded, medium washed away, not washed away, slightly washed away, strongly washed away, differentiated, fertilizers, etc. In the midst of great development of Azerbaijan received erosion causing Washout, erosion and deflation. It is expressed most clearly in the soils, cultivated in conditions of impoverished and sediments rain fed agriculture. To solve problems of completeness enough land management, erosion or potentially dangerous erosion you must deeply know every piece of array management, its features that can influence the choice of crops on those or other general events or private receptions machinery. Obtaining such data is possible only as a result of large-scale surveys the territory. Depending on the degree of loss of soil, upper horizons generally emit very weak, medium and very strong in difference of soil. The stronger are affected by erosion of the soil, the more they differ from their analogues on chemical, granulometric composition and physico-chemical properties, water, air and thermal regimes of biogenic and other indicators, the totality of which affect their fertility and erosion resistance. The change of particle size distribution of soils in the development of erosion is determined primarily by the degree of homogeneity of the depth profile. If the soil is fertile, soil gets washed away the variety little different on this basis. In soil silt fraction decreases markedly. In eroded soils changes the mineralogical composition of the plow layer due to its change in depth of the soil profile. A very big change of particle size distribution of the silnosmytyh soils. Soil erosion reduces excitedly humus content.If the stock 0-50 cm layer in nesmytyh mining and ostepenjonnyh Brown soils is 168 t/ha, in a very slabosmyth-156t/ha, slobosmyth-135 t/ha, srednesmyth-108 t/ha, silnosmyth-65 t/ha, and in very silnosmyth-32 t/ha. In eroded soils not only decreases the total humus content, but changes and its qualitative structure, narrows the ratio of carbon to nitrogen, thereby increasing the number of fulvic acid and decreases the ratio of mobile forms of humic acids to fulvoacids. Decreases correspondingly the contents of mobile forms of humic acids. According to A.a. Tanasienko, these changes are the stronger, the more are affected by erosion of the soil. Reduce humic acids leads to lower fertility, conservation of soil resistance to deterioration. I.e., the stronger the soils are affected by erosion, the less they contain humus. This reduction, in General, proportional to the reduction of nitrogen in the soil. In addition, eroded soils percent digestible forms of nitrogen, nitrate and ammonia in particular forms, below than differences of soil. In soils detected by reduction of gidrolizuemogo nitrogen and nitrate -2.0 1.5 times. Shortage of available forms of nitrogen is one of the important reasons for the decline of fertility of eroded soils. Regularity also reveals decreasing r20 in srednesmytyh soils by 30% and silnosmytyh-more 50%. Reduction of organic phosphates and phosphorus forms insoluble increase leads to deterioration of phosphorus nutrition of plants. In eroded soils are often reduced content of potassium. Thus, its agrochemical characterization of soil washed away are substantially different from nesmyth. Hence arises the need for differentiated fertilization in soil with varying degrees of erosion. Eroded soils differ significantly from physical properties. In the eroded soils decreases the content of structural aggregates. So, if in the upper horizon mining nesmyth Brown soil content of the aggregates is 52% very slabosmyth-48%, slabosmyth-42%, srednesmyth-30%, silnosmyth 18%, and in very silnosmyth-8%. The number of units of less than 0, 25 mm increments (Table 1). Soils are distinguished from eroded visible differentiation of soil profile and greater capacity. Well allocated arable and 2 layers. In the past appears gray-Brown shade effect of alluvion horizon. Subsurface layer is visibly detectable seal and meet the selection of carbonates. Structure of silt-clotted, and Virgin soil-clotted well expressed. The degree of erosion for each soil type is set, depending on which part of the soil profile washed away or deformed horizon from which topsoil is emerging, what is the average percentage yield compared to harvest on nejerodirovannyh soils, and the steepness of slope in degrees. The degree of erosion of soil also depends on the shape of the slope, its length and exposure, the correctness of management, anti-erosion of sustainability, which includes a variety of mechanical, chemical and physical properties. Therefore, on the slopes of the same slope soils can be one, but different subtype of erosion.
Authors and Affiliations
RAE Z HAliyev
Keywords
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- EP ID EP567597
- DOI 10.26717/BJSTR.2017.01.000216
- Views 160
- Downloads 0
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