Water - one of the most important parts of our lives.Speaking of water, it is impossible to forget about such a concept as the water balance.Let's start with a definition.
water balance - the ratio of the parish, stock changes of water and its consumption in a certain period of time.It takes into account all the water on Earth in a liquid, gaseous and solid state.Sushi (which has a drain in the ocean) is numerically equal to the evaporation of the quantitative value of precipitation, if we subtract them from the river and underground drains.And for the world's oceans - the amount of rainfall, river flow and groundwater influx from the mainland.If we talk about the closed (drainage) of the land and about the whole world in general, relate to the evaporation of precipitation.
This is a very important indicator, so it displayed a special equation for calculating the water balance applied for balance sheet valuation.Thus the calculated volume of renewable water resources in the vast territories that remain as a result of the water cycle.Also, this indicator is defined for lakes, rivers, oceans and soil.
water balance of the lake is determined based on the influx of precipitation, groundwater and surface water, taking into account the changes in the water level in the time interval of interest.By the same token calculated reservoirs and water balance.Using the rivers, lakes and groundwater in order to supply the population and industry, irrigation plants significantly changes the ratio of the water balance and its components.His account is also required for the implementation of the set of practical actions: the forecast of water inflow in mines, quarries, and design work on the measures for the management of water regime.Largely on the water balance is influenced by the natural long-term and seasonal variations, but even more - changes resulting from human activity.Elements of water balance is measured at meteorological and hydrological stations.
There is also such a thing as water balance - the ratio between the arrival and the flow of water at a specific part of the earth's surface for the interest period of time, taking into account human activities.This indicator helps to analyze and assess the water availability of the pool.In that case, if the balance is negative rate, we are talking about the need for measures to cover the water deficit.
Water balance of the soil - is proportional to the ratio of that water that enters the soil, and that which is spent out of it for a certain period of time.It is calculated, if necessary, to find out the level of the local water supply plants.Depending on the ratio of the measured variable mode is defined as:
- permafrost;
- wash;
- periodically wash;
- nonflushing;
- exudative;
- irrigation.
term "water balance" is also used to assess the state of the human body, namely, the water content in the blood and cells.This is a very important indicator, depends on it being a normal person, the rate of metabolism and absorption of nutrients.
