Studies upon Climatic Soil Moisture Indicators

Tudor SÄ‚LÄ‚GEAN, Marcel DáŽRJA, Adela HOBLE

Abstract


Soil is one of the natural factors representing the environment over which occurs during the process of watering and acts as a "reservoir" of water storage. Soil is a porous medium that cannot hold a lasting only a certain amount of water, excess water either through ground water seepage and moisten the lower strata either be retained on the surface water ponding. Excess moisture temporary or periodic: Prolonged excessive wetting, wetting the medium term, the short wetting, wetting of varying duration (short-extended). After excess moisture source and intensity:  moderate excess ground moisture; strong excess ground moisture; overate excess moisture from precipitation; strong excess moisture from precipitation; excess moisture from precipitation under phreatic intake; excessive humidity combined: groundwater and precipitation; excessive humidity in coastal streams; flood excess moisture; excess of moisture and salts. Heavy rainfall produces excessive humidity in cool areas where evapotranspiration is low and with low soil permeability. Depression relief favors the appearance of excess moisture in the rainy season on clay-rich soils. Low renewal of the air in the soil results in the accumulation of large amounts of CO2, the CO2 content of the air in the soil than 1% by plants suffer. Excess moisture causes reduced soil aeration, slowing oxidation and mineralization grading the pharmaceutical insufficient debris. Remove excess moisture by means of a network of drainage channels, as compared with the removal of excess moisture by a network of open channels, has a number of advantages, such as small area removed from the culture, ease of agricultural works by mechanical means, simple maintenance work, lack of widespread outbreaks of weeds, pests and diseases etc. The disadvantage is the high cost of pipes, drainage filter material and execution.


Keywords


soil humidity, hydro-ameliorative system, climatic conditions.

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