Method of determining amount of change of power of peat layer on reclaimed land
SUBSTANCE: method comprises the device of cuts, power measurement of layer of membranes of soil biological organisms in the beginning and end of the observation period and the calculation. At that the power of the packed layer of membranes of testate amoebas is measured. The amount of change in the power of peat layer is calculated by the formula Hsrab=a·h, where Hsrab is reduction value of the peat layer power, cm; h is the power of packed layer of membranes of testate amoebas, cm; a is a coefficient. The coefficient a is determined by the formula a=(H1-H2)/(h1-h2), where H2, H1 is the power of the peat layer and h2, h1 is power of the packed layer of membranes of testate amoebas, respectively at the end and the beginning of the observation period.
EFFECT: method enables to determine quickly and accurately the amount of change of power of the peat layer on reclaimed land.
The present invention relates to the field of agriculture, and more specifically to methods to determine the amount of change of capacity of the peat layer on reclaimed lands. The change of the layer thickness of peat (peat) is an important environmental indicator of technologies for land reclamation and cultivation of crops.
There is a method of establishing the power of the peat layer, which includes the drilling, measuring the length of the drilled cores and calculation (Soil survey. - M.: Publishing house of the USSR Academy of Sciences. 1959, str).
A known method is used in flooded not reclaimed peatlands.
The way to determine the amount of change of capacity of the peat layer on reclaimed lands, including the device cuts power measurement layer membranes soil biological organisms at the end of the billing period and the calculation described in the patent of Russian Federation №2452950, published on 10.06.2012 in bull. No. 16.
The disadvantage of this method is limited functionality due to the availability of sufficient density of settlement of diatoms.
The aim of the invention is the extension of functionality.
The invention consists in that the way to determine the amount of change of capacity of the peat layer on reclaimed lands, including the device sections, and the intent of the layer thickness of the shells of soil biological organisms at the end and the beginning of the period of observation and calculation, this measures the capacity of the compacted layer of the shells of testate amoebae, and the change in capacity of the peat layer is calculated by the following formula Hthe operated=a·h, where Hthe operatedthe magnitude of the reduction capacity of the peat layer, cm; h - power compacted layer of shells of testate amoebae, cm; a - coefficient, and the coefficient a is determined by the formula a=(H1-H2)/(h1-h2), where N2H1- capacity of the peat layer and h2h1- power compacted layer of shells of testate amoebae, respectively at the end and the beginning of the observation period.
During operation of the reclaimed peatland surface part of the layer of peat is mineralized and disappears shells of diatoms, which were in the upper part, moved to the bottom of the peat layer, where you create a compacted layer. The capacity of the compacted layer of the shells of diatoms increases proportionately with the decrease of the peat layer. A single measurement at the end of the settlement period the capacity of the compacted layer of the shells of diatoms allows to calculate the change in capacity of the peat layer in the billing period. In the Northern regions (Northern taiga subzone) the density of settlement of diatoms insufficient for the formation of a compacted layer of shells, which complicates the application of f the th method.
In Northern regions the density of settlement testate amoebae sufficient to create a compacted layer of shells.
The essence of the proposed technical solutions explains the example.
Reclaimed floodplain peat supplied systematic horizontal drainage. The rotation zernotorgovaj. The operation period of 15 years. The project documentation was lost. The capacity of the peat layer in the initial period of operation is not known. Arrange the soil cut the entire depth of the peat layer. Measure the power of the compacted layer of the shells of testate amoebae h=1.0 cm and calculate the Hthe operated- the magnitude of the reduction capacity of the peat layer. Hthe operated=a·h=20·1.0=20 see
Values of the coefficient a is determined by the formula a=(H1-H2)/(h1-h2), where N2H1- capacity of the peat layer and h2h1- power compacted layer of shells of testate amoebae, respectively at the beginning and end of the observation period, see take This factor constant for all sections of the array drainage with homogeneous soil and drainage conditions. The observation period take 2-3 years. With the reduction of the period of observation decreases the accuracy of determination of the coefficient a. Arrange the soil section at the beginning of the observation period and at the end of it. Measure the capacity of the peat layer H2,=90.0 cm and H1=91.0 cm and power uplatnena the layer of shells of testate amoebae - h2=0.85 cm and h1=0.9 cm, respectively at the end and the beginning of the observation period. Then a=(91-90)/(0.9-0.85)=20.
The proposed method was tested in the Arkhangelsk region. Reclaimed riparian peatlands, provided systematic horizontal drainage with depth of 1.1 m, the Rotation Boscombe. The operation period of 25 years. Arrange the soil cut the entire depth of the peat layer. Measure the power of the compacted layer of the shells of testate amoebae h=1.7 cm and calculate the Hthe operated- the magnitude of the reduction capacity of the peat layer. Hthe operated=a·h=21·1.7=35.7 see the value of the coefficient is determined for a three-year period of observations a=(81-66 .3)/(1.2-1.13)=21. Peat layer thickness at the beginning of operation of the reclaimed peatlands under the proposed method is 81+35.7=116.7 see According to project documentation peat layer thickness at the beginning of operation of the reclaimed peatlands was 117 see the Accuracy of the proposed method is satisfactory.
When establishing the magnitude of the change of capacity of the peat layer 5 parts of one of the reclaimed array, you must spend 10 measurements by the method similar two at each site. Under the proposed method it is necessary to spend 7 measurements, one at each site and two for the determination of the coefficient a.
Thus, the proposed method to determine the amount of change m is snasti layer of peat on reclaimed lands extends the functionality of the analogue in areas with high density of settlement testate amoebae.
The way to determine the amount of change of capacity of the peat layer on reclaimed lands, including the device cuts power measurement layer membranes soil biological organisms at the end and the beginning of the period of observation and calculation, characterized in that the measured power of the compacted layer of the shells of testate amoebae, and the change in capacity of the peat layer is calculated by the following formula Hthe operated=a·h, where Hthe operatedthe magnitude of the reduction capacity of the peat layer, cm; h - power compacted layer of shells of testate amoebae, cm; a - coefficient, and the coefficient a is determined by the formula a=(H1-H2)/(h1-h2), where N2H1- capacity of the peat layer and h2h1- power compacted layer of shells of testate amoebae, respectively at the end and the beginning of the observation period.
SUBSTANCE: controlled area in the planting is chosen and prepared, the procedure for controlling of soil respiration is carried out in the chosen controlled area in the planting by measuring the amount of accumulation (loss) of gaseous respiratory substrate CO2 (O2) in a sealed chamber, with which the controlled area is covered. Preparation of controlled area additionally includes such sowing seeds when a part of the area is left unsown. For measurement two different sealed chambers are used separately and alternately, with one of which the part of controlled area of the planting just sown with plants is covered entirely, and with another one additionally to the above area the unsown part of the controlled area of the planting is covered partially or completely. At that the amount of soil respiration attributable to the square of the controlled area of planting is calculated by determining the difference between the measurement results obtained with the above sealed chambers, multiplied by the ratio of the square of the controlled area of planting to the difference of squares of bases of above two sealed chambers.
EFFECT: ability to study in the field, and at the same time the interaction integrity of the root and ground parts of plants is not violated.
SUBSTANCE: samples of uncontaminated background soil and contaminated with heavy metals or crude oil and oil products are taken, and for each pair of samples of soil the number of ammonifying bacteria, the number of microscopic fungi, the abundance of bacteria of the genus Azotobacter, the catalase activity, the invertase activity, the germination of radish is determined. IRS of the soil is calculated as follows: IRS =Σ( Pconti/Pfoni)×100%/n, where Pconti is the value of i-th index (number of ammonifying bacteria, million/g, the number of microscopic fungi, million/g, the abundance of bacteria of the genus Azotobacter, %, catalase activity, ml O2/min, the invertase activity, ml, glucose/24 h, the germination of radish, %, for contaminated soil; Pfoni is the value of i-th/min, the indicator for uncontaminated soil; n is the number of indicators (n=6). The environmental condition of the soil is determined according to reduction of the IRS. If the IRS value in the contaminated soil is over 95%, the normal ecological condition of the soil is stated. In reduction of the IRS to 90-95% the satisfactory condition is stated. In reduction of the IRS to 75-90% the poor condition is stated. In reduction of the IRS below 75% the catastrophic condition is stated.
EFFECT: method enables to assess quickly and accurately the environmental condition of the soil.
17 tbl, 2 ex
SUBSTANCE: method to determine frost heave of soil during freezing of a seasonally thawing layer includes drilling of a well before start of its thawing, sampling of soil, measurement of depth of seasonal thawing ξ, definition of dry soil density in samples ρd,th. In addition wells are drilled after freezing of the seasonally thawing layer, on the samples they additionally define density of dry soil after freezing of the seasonally thawing layer ρd,f, and the heave value is determined in accordance with the given dependence.
EFFECT: reduced labour intensiveness of works, increased accuracy of determination of heaving value, provision of material intensity reduction.
SUBSTANCE: method involves probing an underlying surface having test areas with a multichannel spectrometer mounted on a space vehicle to obtain images on each channel; calculating, through zonal ratios of signal amplitude values in channels, partial degradation indices, specifically percentage content of humus (H), salinity index (NSI) and moisture loss index (W); determining the integral degradation index D based on a multi-parameter regressive relationship of the type:
EFFECT: faster and more reliable determination of degree of degradation of soil cover.
5 dwg, 3 tbl
SUBSTANCE: method includes installation of a device into a vertical position, and the device is a metal hollow cylinder enclosed into the body, along the inner and outer wall of which there is a cutting element welded in the form of a spiral, lowering of the cylinder to the specified depth during its rotation with cutting of a soil sample of cylindrical shape.
EFFECT: simplification and increased reliability in production of samples.
SUBSTANCE: method includes device of cutting, measurement of parameters of soil layer and calculation. In the layer of peat ash the mass of diatomic algae shells is measured per one unit of plot area. The value of pyrogenic change of peat layer thickness is calculated by the following formula: H=α·m, where H - is the value of pyrogenic change of peat layer thickness, cm; α - is the coefficient, cm·m2/g; n - is mass of diatomic algae shells per unit of plot area, g/m2. The coefficient α is evaluate according to the formula: α=H1/m1, where H1 - is the peat layer thickness of the analogue plot, cm; and m1 - is the mass of diatomic algae shells per unit of analogue plot area, g/m2.
EFFECT: method enables calculate quickly and accurately the pyrogenic change value of peat layer thickness.
SUBSTANCE: method involves biotesting based on the number of organisms at optimum soil moisture. Soil toxicty is determined from the nitrogen-fixing activity legume bacteria which form tubercles on the root system of legume grasses in the 15-20 cm layer of the soil 2-3 weeks after spring aftergrowing and before the flowering period. Soil toxicity is determined from the inner colour of the nitrogen-fixing tubercles (pink or red); if more than 50% of the tubercles are coloured, the state of the soil is considered satisfactory, if 20-50% of the tubercles are coloured, the state of the soil is considered an environmental risk and if less than 20% of tubercles are coloured, the state of the soil is considered an environmental disaster.
EFFECT: method enables rapid and accurate evaluation of the degree of environmental pollution.
1 tbl, 6 ex
FIELD: oil and gas industry.
SUBSTANCE: in the device containing a tubular furnace equipped with a heater and a temperature control - the temperature programmer unit, located vertically and provided with cylindrical container with a soil sample, which is coaxially located in it. the inlet of the above furnace is connected to a pipeline with an activator of inert gas flow rate, and the outlet is connected through a quick-detachable connection to a hydrocarbon sensor represented with a flame ionisation detector, at the inlet of which a quartz capillary is installed, and the soil container is made in the form of a thin-wall shell from stainless steel with a porous bottom facing the tubular furnace inlet.
EFFECT: higher accuracy and informativity of analysis.
3 cl, 1 dwg
SUBSTANCE: method includes geodetic measurements of the land plot area, three-dimensional measurement of the land plot, based on the measurement of the coordinate component of the resource parameters in different parts of this plot. Resource soil parameters of land plot are determined for each time period of operation taking into account the discrete disposal of part of the resources that were available at the beginning of the measurement period. In determining the resource parameters of the soil its biological activity is additionally measured on the stream of direct solar radiation reaching the horizontal surface of the soil.
EFFECT: method enables to improve the accuracy of measurement the resource parameters of the particular land plot.
1 tbl, 1 ex
SUBSTANCE: method includes separation of air-dry aggregates. The separated aggregates are destroyed to the size smaller than 0.25 mm, moistened, dried, the self-collected structural units are separated from the structureless particles by circulating shaking (1.5 hours, 25 rpm), followed by sieving on a sieve of 0.25 mm and separation of water-resistant aggregates.
EFFECT: method enables to separate from the total soil mass the part which is the most active in terms of structure formation - the components capable to form spontaneously the aggregates after wetting-drying, enables to estimate the direction of aggregate formation processes in soil.
FIELD: agriculture, in particular, method used for determining of phosphorous fertilizer demands in the course of growing of cereals and leguminous crops.
SUBSTANCE: method involves providing annual agrochemical investigation of soil arable layer; determining labile phosphorus content and availability of phosphorus to plant for forming of planned yields by providing chemical analyses for capability of soil to mobilization of labile phosphorus by using potassium phosphate solution, as well as by calculating doses of used phosphorous fertilizer from respective formula, with annual agrochemical investigation being provided in arable layer at 0-20 cm depth; additionally determining content of labile phosphorus delivered into soil in the course of mineralization of soil organic substance and plant remains of preceding crop.
EFFECT: reduced labor consumption, increased precision in diagnosis and regulation of phosphorous feeding of plants.
2 cl, 1 dwg, 2 tbl, 1 ex
FIELD: agriculture, agronomic chemistry, agronomic ecology, soil biology, and chemical analysis of soil.
SUBSTANCE: method involves determining content of mineral nitrogen and potentially mineralizable nitrogen provided by soil incubation at temperature of 34-36°C for 7-8 days; converting mineral and potentially mineralizable soil nitrogen to solution by boiling incubated soil suspension in water in the ratio of 1:5 during 20 min for sandy, sandy loam and medium loamy soil and during 30 min for heavily loamy soil; subjecting aqueous extraction of soil sample to analysis by means of Kieldal apparatus for determining nitrogen content actually available to plants under light alkaline hydrolysis conditions; determining nitrogen content potentially available to plants under drastic alkaline hydrolysis conditions; forecasting fertilizer nitrogen dose on the basis of nitrogen content actually available to plants for predetermined yield of specific crop with the use of coefficient of assimilation by plants of soil nitrogen and fertilizers, and amount of nitrogen needed for production of 1 centner/hectare of product from formula: ,
where D is forecast fertilizer nitrogen dose; N is kg/hectare; Yc is crop yield for which fertilizer nitrogen dose is calculated, centner/hectare; C is amount of nitrogen needed for production of 1 centner/hectare of product of designed crop, kg/hectare; Naa is amount of nitrogen in soil actually available to plants, kg/hectare; 0.4 is coefficient of usage by plants of available nitrogen from fertilizer, %. Method may be used for evaluation of humic podzol soil with regard to its nitrogenous state, forecasting of need for nitrogenous fertilizer by plants, determining stock of nitrogen available to plants and forecasting of crop yields. Method does not require prolonged observations and controlling of soil temperature during plant growing periods.
EFFECT: increased efficiency, elimination of employment of expensive bulky equipment for performing forecasting process.
5 dwg, 4 tbl
SUBSTANCE: method comprises using microscopic chlorella algae as a biological test, distributing the suspension of the cells of chlorella over the paper filter on the surface of the soil plate in the Petri caps, obtaining chlorophyll extract, determining optical density of the extract, and comparing it with the reference one. The 20-ml volume of the suspension of the chlorella cells are distributed inside the Petri caps. The caps are covered and set into a greenhouse. The caps are exposed to light during seven days, and then the filters are removed from the caps, dried at a temperature of 38-42°С, grinded, and extracted. The allelopathy activity of the soil is expressed in per cents of the optical density of the extract on the reference one, in which chlorella is grown on the filter, which is set onto four layers of moistened filtering paper or cotton.
EFFECT: reduced labor consumptions and enhanced reliability of determining.
FIELD: agriculture, soil science.
SUBSTANCE: alteration in soil properties during restoring the carcass of organo-mineral gel should be detected by measuring the difference of potentials between the soil and soil-contacting ion-exchange membrane. The method considerably simplifies and accelerates evaluating the carcass of organo-mineral soil gel.
EFFECT: higher efficiency of evaluation.
2 cl, 1 ex, 1 tbl
SUBSTANCE: method contains sampling soils and analysis of samples using X-ray-fluorescent technique. Content of humus is judged of from arsenic-to-cobalt ratio on preliminarily plotted calibration graph.
EFFECT: increased reliability and rapidity of analytical procedure.
FIELD: mining industry.
SUBSTANCE: method includes performing compression tests according to system "cylindrical hollow sample - backfill material" in rigid matrices with different values of relation of height of backfill material, filling space between walls of rigid cylindrical matrix and sample, to sample height, which has relation of height to diameter no less than 2. sample is set in matrices in such a way, that its axis passes through matrix axis. Unified hardness passport is built in coordinates "horizontal stress - vertical stress" of rock sample. Tests of rock samples for sliding are additionally performed during compression with loads above limit of lengthy hardness of rock with construction of sliding curves in coordinates "load level - vertical deformations speed logarithm", after that rock samples in matrix are enveloped in backfill material and same tests are performed again. Relative reaction of backfill massif is determined from mathematical expression. Alignment chart is built for dependence of relative reaction of backfill material from relation of its height to height of rock sample for various levels of system load. Alignment chart is used to determine relative reaction of backfill massif during its long interaction with rocks, enveloping a mine.
EFFECT: higher reliability, higher trustworthiness, higher quality of control over processes of deformation and destruction of massifs.
5 dwg, 1 ex
FIELD: agriculture, in particular, evaluation of soil capacity of supplying farm crops with mineral nitrogen under sloped relief conditions.
SUBSTANCE: method involves composting soil while adding ammonium sulfate; determining content of nitrates accumulated in soil after decomposition of organic compounds. Composting procedure is carried out under natural field temperature mode conditions in bottomless vessels and at optimal moisture content mode conditions by providing periodic off-season irrigation procedures. Nitrification capacity is evaluated by ammonium nitrogen-to-nitrate nitrogen transition intensity.
EFFECT: increased information content of nitrification capacity evaluating method and wider range of usage.
2 cl, 3 tbl
FIELD: agriculture, in particular, soil type determining method allowing soil fertility to be evaluated.
SUBSTANCE: method involves sampling soil; preparing and analyzing soil sample by fluororoentgenographic method for determining calcium, iron, zirconium and titanium content thereof; determining type of soil by iron to zirconium ratio and calcium to titanium ratio from preliminarily plotted gauging diagram.
EFFECT: quick process of determining soil type, intensified interpretation and provision for obtaining of reliable results.
FIELD: agriculture and soil science, in particular, determination of soil properties.
SUBSTANCE: method involves determining maximal shear stress, with said process being carried out with the use of soil solution squeezed from soil and located in glass vessel; spilling dispersed material into glass pipe; determining maximal shear stress by difference of gas pressure at different ends of pipe, with soil solution being moved.
EFFECT: reduced labor intensity owing to substantial decrease in amount of soil required for carrying out test.
FIELD: agriculture and soil science, in particular, methods for determining of soil properties.
SUBSTANCE: method involves placing soil suspension into pycnometer; adding liquid and removing blocked air from soil by vacuum supplying. Liquid is solution tending to destruct soil aggregates. Air is removed from fluidized soil bed.
EFFECT: simplified process for determining density of soil solid phase and reduced probability of occurrence of error in test results.