APPROACHES TO THE EVALUATION OF DRYING AREAS AND SYSTEMATIZATION OF ATMOSPHERIC ORECIPITATION IN THE SUBZONE OF DARK CHESTNUTSOIL
Keywords:
atmospheric precipitation, , maximum daily precipitation, soil-climatic conditions, the approach to the study, systematization of precipitation, long-term data of medium red soilAbstract
The article presents the materials of searching ways, which can lead to a correct assessment of aridity of a territory in the summer. The complexity of the correct assessment and an accurate forecast of the probability of soil drought caused by fractured structure of the soil. One of the factors causing drought is the frequency and volume of rainfall, which in some years have a strong deviation from the norm in the study subzone. These variations require systematization, to have a possibility in the future, to control the forecast. Therefore, author shows the rainfall regime in the subzone of dark chestnut soil.
Along the averagelong term data of rainfall, considered the cases, when the amount of precipitation for the day or for several days in a row exceed 20 mm. During the period from 1986 to 2006, in 70% of this time, there have been cases where such rainfall fell in the summer. Among these years the frequency of fall reached 23 times. During the analyzing the data (M Karamendy) for the period from 1986 to 2015, in 66% of this timefell "single" precipitation with a frequency 35 times.
The total for a few days and one-day fall of "one-time" percipitations, can reach long term averagemonthly values, and sometimes exceed them several times. The author believes that the systematization of precipitation allows to calculate the probability of both crop yields and the possible situations in the region because of rainfall.
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