- It is vital for the development of the country.
- Overuse of resources and irrational consumption of resources can lead to socio- economic and environmental problems and thus resources conservation is important.
- Resource planning is a complex process which involves identification of resources, evolving a planning structure for implementing resources, development plans and matching resource development plans.
- Mining sites are abandoned after mining work is complete leaving deep scars and traces of over burdening.
- In states like Jharkhand, Chhattisgarh, Madhya Pradesh and Odisha deforestation has occurred due to mining.
- In states like Gujarat, Rajasthan, Madhya Pradesh and Maharashtra overgrazing is one of the main reasons for land degradation.
- In Punjab, Haryana, western Uttar Pradesh, over irrigation is responsible for land degradation due to waterlogging leading to increase in salinity and alkalinity in the soil.
- The minerals processing like grinding of limestone for cement industry and calcite and soapstone for ceramic industry generate huge quantity of dust in the atmosphere which retards the process of infiltration of water into the soil after it settles down on the land.
- Industrial effluents as waste have become a major source of land and water pollution.
- The states of Jharkhand, Chattisgarh and Madhya Pradesh are rich only in minerals and coal deposits.
- Arunachal Pradesh has abundance of water resources but lacks in infrastructural development.
- The state of Rajasthan is very well gifted with solar and wind energy but lacks in water resources.
- The cold desert of Ladakh is relatively isolated from the rest of the country. It has very rich cultural heritage but it is deficient in water, infrastructure and some vital minerals.So considering such cases of diversity, balanced resources planning at the national, state, regional and local levels is required.
Ans: Land resources in India are primarily divided into:
- agricultural land,
- forest land,
- land meant for pasture and grazing, and
- waste land which includes rocky, arid and desert areas, and land used for other non-agricultural purposes such as housing, roads and industry.
According to the recent data, about 54% of the total land area is cultivable, 22.5% is covered by forests, and 3.45% is used for grazing. The rest is waste land with traces of miscellaneous cultivation.
Q7. How does industry cause land degradation? (3)
Answer : The mineral processing like grinding of:-(a) lime stone for cement industry
(b) soapstone for ceramic industry generate and release heavy amount of dust to the atmosphere. It settles down in the
surrounding areas and affects infiltration of water and crop cultivation. Industrial effluents and wastes have became the major
cause of land and water pollution.
Answer : The most important soil of India is alluvial soil. It covers over 43% of the total area.The characteristics of alluvial soil are:-(i) These are formed by the silt deposition of rivers.
(ii) These are fertile.
(iii) They have a fine particles.
(iv) There are two types of alluvial soil – Khadar and Bhangar.
(i) Overgrazing should be avoided as it may destroy the vegetation cover.
(ii) Contour planning should be adopted.
(iii) Terracing should be done to form steps which will check the speed of flow of water and reduce erosion.
(iv) Shrubs and trees should be planted to check the force of the wind.
(v) Deforestation should be avoided.
(vi) Different plant with different harvesting period should be grown in strips, so that the farm is not without plants at any time.
Answer:
The use of land is determined both by physical factors such as topography, climate, soil types as well as human factors such as population density, technological capability and culture and traditions etc. The pattern of the net sown area varies greatly from one state to another. It is over 80 per cent of the total area in Punjab and Haryana and less than 10 per cent in Arunachal Pradesh, Mizoram, Manipur and Andaman Nicobar Islands. Forest area in the country is far lower than the desired 33 per cent of geographical area, as it was outlined in the National Forest Policy (1952). It was considered essential for the maintenance of the ecological balance. A part of the land is termed as wasteland and land put to other non-agricultural uses. Wasteland includes rocky, arid and desert areas and land put to other non-agricultural uses includes settlements, roads, railways, industry etc. Continuous use of land over a long period of time without taking appropriate measures to conserve and manage has resulted in land degradation.
Q11. How have technical and economic development led to more consumption of resources? (3)
Ans. The following factors are responsible for technical and economic development leading to increased consumption of resources:
- Technological development led to efficient machinery. As a result, production increased ultimately leading to the consumption of more resources.
- Economic development raised people's demands and the technological advancement led to greater exploitation of resources to meet their demands.
- Improved medical and health resources led to increased population which in turn resulted in increased consumption of resources.
Q12 . Differentiate between Khadar soil and Bhangar soil? 3)
Answer :
| Khadar Soil | Bhangar Soil |
(i) New alluvial are called khaddar. | (i) Old alluvial are called bhangar. |
(ii) These are found near the river in the flood plains. | (ii) These are found away from the rivers. |
(iii) These are sandy and of light colour. | (iii) These are coarse and gravel like particles. |
(iv) These are renewed frequently and hence are very fertile. | (iv) These are not renewed and hence are less fertile. |
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