When talking about "Earth," everyone knows that it is a part of the land that we have trodden the objects we use planting or as the basis of a residential building, but it means the science on Earth (soil science). "Dirt" (soils) refers to natural thewatthu (natural body) caused by the disintegration of rocks and minerals. Mash mixture with a อินทรีย object, which covered the surface world is a thin layer that support the growth and use of plants. Separated layer (horizon) that can be observed from the steps to the bottom. The territory has its own identity and characteristics, which humans can be any kind of a separatist. The soil is composed of solid minerals, water and air objects อินทรีย with different proportions. The emergence of the Earth as a result from the action of various factors such as climate, plants, and other organisms toward the object the origin of Earth. In any one area. Over a period of time, so the "soil" in which one may be identical or different from the soil in one. Depending on the influence of these factors, which are much less different in each area, as a result, the soil is a factor, and when to change various properties of soil characteristics or are changed.The relationship of these factors can be written instead by the equation. When a particular type of soil = S Cl = climate P = innovation thun the origin of Earth. O = biological factors. R = terrain factors T = duration of continuous without interruption. Climate (climate) Climate influence the occurrence of soil or soil of different characteristics: temperature and rainfall, which both influence the rate of decay of the stones. Both physical and chemical aspects of mineral (physical and chemical weathering) can also influence the rate of speed of movement and accumulation of rocks and minerals that were to become the most important object is the origin of the Earth. Tropical rock minerals are decomposed into the soil faster than in the khetopun, or winter because of high temperatures and tropical rain quantity over winter. The different disintegration weathered ruins everything progresses rapidly. To wash a lot of nutrients to plants. It often causes soil fertility is low. Objects, the origin of the soil (parent material) As an important factor of soil birth control and visibility, and quite clearly influence the composition of the soil, such as color, soil texture. The structure and chemical properties of soil In General, the soil that is caused by an object that originated from their rock disintegration with the reaction is alkaline (basic rock) is often a dark color fabrics, soil fertility is high. Best soil caused by stones, they are the reaction is acid. (Acid rock) is often a rough texture soil dimmed. Fertility and the ability to Exchange low prachubuak etc. Geography (relief) In this case I mean pitch, or not the same level of State space and slope of the area related to the underground water level, these factors influence the occurrence of various layer styles. In the face of soil cutting The depth of soil color relative humidity in the soil and the severity of washing etc. For example, soil, resulting in a high slope is often shallow soil. There is minimal washing chandin's face is very thin on the ground or possibly chandin no chandin on much. Contrary to the Earth, resulting in the plains are often thicker than chandin since it is on the source of sediment. LP over details because the movement of soil from clay size particles layer on down to Earth on the bottom. Biological factors (organism) Include various creatures which consists of plants and animals, but often highlight the various plants which covered on the surface which influence. The quantity อินทรีย in soil and chemical composition of the soil. Clay was born under its plants at a pasture often have a อินทรีย object, and the elements that are plant food than Wild Coast forest or pine solid, etc. Time (time) The influence of time in terms of the range of the mean Earth times continued without serious incident interrupted the development of the Earth. When a particular type of ground zero for a point where one has a serious event to occur, the soil is treated as the end of time in the creation of the soil, and would be the beginning of a period of the next interval. Such a catastrophic event could mean changes in underground water level terrain changes to climate in the immediate or changes of soil origin object, such as an override of the radical new sludge Grill tamor, etc.
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