what is the importance of soil class 10

Changes in water content of soil are accompanied by change in total volume of soil (figure 3.10). Insects and microbes (very tiny single-cell organisms) live in the soils and depend on soils for food and air. clayey material and well-known for their capacity to hold moisture. Resources can be classified in the following ways: (a) On the basis of origin – biotic and abiotic, (b) On the basis of exhaustibility – renewable and non-renewable, (c) On the basis of ownership – individual, community, national and international, (d) On the basis of the status of development – potential, developed stock and reserves. Resources have been used by human beings indiscriminately and this has led to the following major problems. All the minerals, water resources, forests, wildlife, land within the political boundaries and oceanic area up to 12 nautical miles (22.2 km) from the coast termed as territorial water and resources therein belong to the nation. What is the importance of a soil classification? (ii) Evolving a planning structure endowed with appropriate technology, skill and institutional set up for implementing resource development plans. They transform material available in the environment into resources and use them. In the snow covered areas of Himalayas, these soils experience denudation and are acidic with low humus content. As properties of clay soils are less dependent on particle size distribution, this classification is more suitable for coarse grained soils. These can be used for meeting future requirements. Your email address will not be published. (iii) Matching the resource development plans with overall national development plans. Depletion of resources for satisfying the greed of a few individuals. These soils contain an adequate proportion of potash, phosphoric acid and lime, which are ideal for the growth of sugarcane, paddy, wheat and other cereal and pulse crops. Wind blows loose soil off flat or sloping land known as wind erosion. Soils are homes to a diverse range of organisms such as worms and termites. Human beings themselves are essential components of resources. Eg: Hydrogen can be used as a rich source of energy. You can also download these notes in PDF. Based on age, Alluvial soils can be classified as: Alluvial soils are very fertile. This type of soil develops on crystalline igneous rocks in areas of low rainfall in the eastern and southern parts of the Deccan plateau. Carbon store and maintenance of atmospheric gases: Soils help regulate atmospheric Carbon dioxide by acting as a carbon store. Eg: Solar and wind energy, water, forests and wildlife, etc. Even other animals, insects receive food by … Hence a soil will be termed as clay. Water as a component of a soil plays an important role in moulding its physical behaviour. They provide the needed moisture and air for the breakdown of organic matter. Materials in the environment which have the potential to satisfy human needs but human beings do not have the appropriate technology to access these, are called Stock. Go through these CBSE Class 10 Social Science notes and make your studies more effective. A soil classification system is essentially to faciliate communication between different groups of engineers, widely separated. The alluvial soil consists of various proportions of sand, silt and clay. In the end, the chapter discusses Soil Erosion and Soil Conservation. Keep Learning and stay tuned for more updates on CBSE and NCERT. It looks yellow when it occurs in a hydrated form. They transform material available in the environment into resources and use them. Attterberg was the first to suggest properties other than which can be used for classification. Furthermore, going into the depth of the chapter, you will learn the development of resources and resource planning in India. Soil Classification Systems 189 A.1.2 The ASTM System An advantage of the Unified system is that it can easily be extended to include more soil groups, giving a finer degree of classification if required. Sustainable Economic Development means “development should take place without damaging the environment, and development in the present should not compromise with the needs of future generations.”. International Resources are regulated by international institutions. Developed Resources: Resources which are surveyed and their quality and quantity have been determined for utilisation. For given percentage of three constitutes forming a soil, lines are drawn parallel to the three sides of the equilateral triangle as shown by arrows in the key as shown in fig. Human beings themselves are essential components of resources. As it continues its way downwards through the many layers in the ground, it is filtered from dust, chemicals, and other contaminants. Various forces of nature such as change in temperature, actions of running water, wind and glaciers, activities of decomposers etc contribute to the formation of soil. Soils hold water (moisture) and maintain adequate aeration. As we move inlands towards the river valleys, soil particles appear to be bigger in size whereas in the upper side of the river valley, the soils are coarse. The American Association for Testing and Materials (ASTM 2006) has adopted the Unified system as a basis for the ASTM soil classification,

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