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Importance of manufacturing industries for India: It helps in modernizing agriculture, reduces heavy dependence on agricultural income by providing [�]. Rocks are combinations or aggregates of minerals in varying proportions. Some rocks consist of a single mineral, e. India is an agricultural country because of the following reasons: Two-third of its population is engaged in agricultural activities. Agriculture is a primary activity and produces most of the food and food grains. It produces raw materials for our various industries, e.
Industrial waste has also contributed to degrading the quality of land especially in areas where industrial belts are found. Land Degradation has also affected the quality of water in our natural resources. To conserve our Land and ensure the land degradation rate declines, we can take certain measures such as control mining activities proper disposal of Industrial waste planting shelterbelts etc.
Soil is one of the important natural resources which is renewable. It takes millions of years to form every centimetre of soil. Soil formation depends upon various factors like temperature, the action of running water, wind, glaciers, the activity of decomposers, parent rock, chemical and organic changes etc.
India has various types of soil due to various natural factors that have contributed to creating soil which differs in terms of thickness, colour, texture, chemical and physical properties.
The Northern Plains are made of Alluvial soil. Alluvial soil is formed due to deposits from the Himalayan rivers Indus, Ganga and Brahmaputra. It consists mainly of sand, silt and clay. The black soil is famous for growing cotton crops. It is mainly found in the Deccan trap and made of Lava.
It has more amount of clay and is known for its moisture holding capacity. This type of soil is found mainly in areas with low rainfall the soil has iron and Class 10th Ncert Geography Notes Us is formed of igneous which gives it its reddish colour. The soil changes colour from red to yellow when it is hydrated. Laterite soil forms in subtropical and tropical climates where intense leaching happens due to heavy rainfall this soil is acidic and is found mostly in the southern States Maharashtra.
It is very useful for growing tea and coffee. Soil is generally sandy and saline in nature; it lacks humus and moisture. The soil is red to brown in colour and has got high calcium content while going deeper. This is found in forest areas especially in the hills and mountains the soil is loamy and silty while of course in the upper slopes.
It is acidic in nature with low humus content. Soil erosion occurs due to human as well as Natural activities. It needs to be controlled as high soil erosion will lead to many problems. Soil erosion can be controlled by using soil conservation methods. Various ways to conserve soil such as given below:. Contour ploughing where contours are created to stop direct water flowing down the slopes.
Terrace farming is a method which restricts erosion and helps with soil conservation. Strip farming is a method where strips of grasses are grown between the crops to minimise erosion. Shelterbelt is a method in which trees are planted in rows to break wind and minimise the shifting of the desert. Next Lesson. Table of Contents. Soil Composition Ninety percent of the world population occupies only thirty percent of land area. The remaining seventy percent of the land is either sparsely populated or uninhabited.
All the economic activities are performed on land. The soil cover on the land is essential for plant growth. So land is necessary for agriculture. Causes of Land Degradation Large scale soil erosion caused by running water and wind.
Dumping of waste materials from mining centers and industrial units. Over irrigatio n leads to an increase in salinity and alkalinity in the soil.
Overgrazing by animals and deforestation by man. Wastewater from the industrial units pollutes the lands. Mineral processing like grinding of limestone for the cement industry and calcite and soap stone for ceramic industry creates a lot of dust. This dust is deposited in the neighboring land Conservation of Land Soil erosion can be Class 10th Ncert Notes Geography Git prevented by ending deforestation, controlling grazing, encouraging afforestation and practicing terrace farming in hilly areas.
Preparation of shelter belts of plants and stabilizing of sand dunes by growing thorny bushes will help to prevent land degradation in deserts. Mining activities should be controlled. New technology which reduces wastage can be adopted. Industrial waste should be chemically treated to remove the harmful substances Urban waste should be used for the production of biogas and bio-manure.
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