The Water Content of Soil

Soil moisture Soil moisture content is the main factor determining which plants can grow and when considering the dunes system it has a considerable influence on the zoning and inheritance of the environment. To investigate this, an experiment was first conducted to determine the most effective way to evaluate a part of the sand dune and obtain the result. Once these results are obtained, the original method is adjusted and the process of obtaining the results is obtained.

Soil moisture Soil moisture content is the main factor determining which plants can grow and when considering the dunes system it has a considerable influence on the zoning and inheritance of the environment. To investigate this, an experiment was first conducted to determine the most effective way to evaluate a part of the sand dune and obtain the result. Once these results are obtained, the original method is adjusted and the process of obtaining the results is obtained.

In addition to temperature, there are various factors that influence the soil temperature, such as moisture content, soil color and relief (inclination, direction and elevation), soil covering (awning and insulation). The color of the ground cover and its adiabatic properties have a great influence on the soil temperature. The whiter soil tends to have a higher albedo than the black soil cover, which causes whiter soil to have a lower soil temperature. The specific heat of the soil is the energy required to raise the soil temperature by 1 ° C. As the water content increases, the heat capacity of the water is greater than the heat capacity of the dry soil, so the specific heat of the soil increases. Since the specific heat of pure water is about 1 calorie per gram and the specific heat of dry soil is about 0.2 calories per gram, the specific heat of wet soil is about 0.2 to 1 calories per gram (0.8 - 4.2 kJ / kg).

It is very difficult to measure the salinity level of water in the soil. Firstly, in the field, the water content of the soil is from extremely dry to saturated. In order to overcome this problem, soil samples were saturated in the laboratory by adding distilled water while stirring the soil paste. The suction filter then obtains a sufficient amount of water to measure the conductivity. The advantage of the saturation extraction method for determining salt concentration is that soil saturation is directly related to the water content range of the field and can be used to evaluate the effect of soil salt concentration on crop yield.