Social Sciences: Class 10 (Part 1) — Chapter 1: Resources and Development

1.1 Introduction to Resources

Everything available in our environment which can be used to satisfy our needs, provided it is technologically accessible, economically feasible and culturally acceptable can be termed as a Resource.

The process of transformation of things involves an interactive relationship between nature, technology, and institutions. Human beings interact with nature through technology and create institutions to accelerate their economic development.

1.1.1 Classification of Resources

Resources can be classified in the following ways:

  • On the basis of origin: Biotic (obtained from biosphere having life) and Abiotic (composed of non-living things).
  • On the basis of exhaustibility: Renewable (can be reproduced by physical, chemical or mechanical processes) and Non-Renewable (take millions of years in their formation).
  • On the basis of ownership: Individual, Community, National, and International.
  • On the basis of status of development: Potential, Developed Stock, and Reserves.
1.2 Development of Resources

Indiscriminate exploitation of resources by human beings has led to major global ecological crises such as global warming, ozone layer depletion, environmental pollution, and land degradation.

1.2.1 Sustainable Development

Sustainable economic development means development should take place without damaging the environment, and development in the present should not compromise with the needs of the future generations.

1.2.2 Rio de Janeiro Earth Summit, 1992

In June 1992, more than 100 heads of states met in Rio de Janeiro, Brazil, for the first International Earth Summit to address urgent problems of environmental protection and socio-economic development.

  • The leaders signed the Declaration on Global Climatic Change and Biological Diversity.
  • The convention endorsed the global Forest Principles and adopted Agenda 21 for achieving Sustainable Development in the 21st century.

1.2.3 Agenda 21

It is the declaration signed by world leaders in 1992 at the United Nations Conference on Environment and Development (UNCED). Its primary aim is to combat environmental damage, poverty, and disease through global co-operation on common interests, mutual needs, and shared responsibilities.

1.3 Resource Planning

Planning is the widely accepted strategy for the judicious use of resources, especially in a diverse country like India where some regions are rich in certain resources but deficient in others.

1.3.1 Resource Planning in India

Resource planning is a complex process involving:

  • Identification and inventory: Surveying, mapping, qualitative and quantitative estimation, and measurement of resources.
  • Evolving a planning structure: Implementing plans with appropriate technology, skill, and institutional setup.
  • Matching plans: Aligning resource development plans with overall national development plans.

1.3.2 Conservation of Resources

Irrational consumption and over-utilisation of resources lead to socio-economic and environmental problems. To overcome these, resource conservation at various levels is vital.

Gandhian Philosophy: Gandhiji voiced his concern by saying, "There is enough for everybody’s need and not for any body’s greed."

Key Milestones in Resource Conservation:

  • 1968: The Club of Rome advocated resource conservation systematically for the first time.
  • 1974: Schumacher presented Gandhian philosophy in his book Small is Beautiful.
  • 1987: The Brundtland Commission Report introduced the concept of 'Sustainable Development' in the book Our Common Future.
1.4 Land Resources

Land is a natural resource of utmost importance supporting natural vegetation, wild life, human life, and economic activities.

1.4.1 Relief Features of India

  • Plains ($43\%$): Provide facilities for agriculture and industry.
  • Mountains ($30\%$): Ensure perennial flow of some rivers; provide facilities for tourism and ecological aspects.
  • Plateaus ($27\%$): Possess rich reserves of minerals, fossil fuels, and forests.

1.4.2 Land Utilisation

Land resources are used for the following purposes:

  1. Forests
  2. Land not available for cultivation (Barren/waste land, and land put to non-agricultural uses like buildings, roads, etc.)
  3. Other uncultivated land (Permanent pastures, land under misc. tree crops, and culturable waste land left uncultivated for more than 5 agricultural years)
  4. Fallow lands (Current fallow left uncultivated for $\le 1$ year, and other than current fallow left uncultivated for 1 to 5 years)
  5. Net Sown Area (NSA): The physical extent of land on which crops are sown and harvested.
  6. Gross Cropped Area (GCA): Area sown more than once in an agricultural year plus net sown area.

1.4.3 Land Use Pattern in India

The total geographical area of India is $3.28 \text{ million sq km}$. Land use data is available for only $93\%$ of the total area because reporting for most north-eastern states (except Assam) and some parts of Jammu and Kashmir has not been fully conducted.

  • The National Forest Policy (1952) outlines that the desired forest area should be $33\%$ of the geographical area to maintain ecological balance.
1.5 Land Degradation and Conservation Measures

Continuous use of land over a long period of time without taking appropriate conservation measures has resulted in land degradation.

1.5.1 Causes of Land Degradation

  • Mining and Quarrying: Leaves deep scars and traces of over-burdening (e.g., Jharkhand, Chhattisgarh, Madhya Pradesh, and Odisha).
  • Overgrazing: Main cause in states like Gujarat, Rajasthan, Madhya Pradesh, and Maharashtra.
  • Over-irrigation: Leads to water logging, increasing salinity and alkalinity in the soil (e.g., Punjab, Haryana, and western Uttar Pradesh).
  • Mineral Processing: Grinding of limestone for cement industry generates huge quantities of dust, retarding water infiltration into the soil.

1.5.2 Conservation Measures

  • Afforestation and proper management of grazing.
  • Planting of shelter belts of plants.
  • Stabilisation of sand dunes by growing thorny bushes in arid areas.
  • Proper treatment and disposal of industrial effluents and wastes.
1.6 Soil as a Resource

Soil is the most important renewable natural resource. It is the medium of plant growth and supports different types of living organisms. Relief, parent rock, climate, vegetation, and time are key factors in its formation.

1.6.1 Classification of Soils

  • Alluvial Soils: Most widely spread soil in India, particularly in the northern plains. Deposited by the Indus, Ganga, and Brahmaputra rivers. Classified by age as Bangar (old alluvial, higher concentration of kanker nodules) and Khadar (new alluvial, fine-grained and highly fertile).
  • Black Soil: Also known as Regur or black cotton soil. Typical of the Deccan trap (Basalt) region. Rich in calcium carbonate, magnesium, potash, and lime, but poor in phosphoric content. Develops deep cracks during hot weather.
  • Red and Yellow Soils: Develops on crystalline igneous rocks in areas of low rainfall in the eastern and southern parts of the Deccan plateau. Reddish color is due to diffusion of iron; looks yellow in hydrated form.
  • Laterite Soil: Derived from the Latin word 'later' meaning brick. Develops in tropical and subtropical climates with alternate wet and dry seasons. Highly acidic ($pH < 6.0$) and deficient in plant nutrients. Suitable for tea, coffee, and cashew nuts after proper conservation.
  • Arid Soils: Range from red to brown in color, sandy in texture, and saline in nature. Lacks humus and moisture due to dry climate and high evaporation rates. Lower horizons are occupied by Kankar, restricting water infiltration.
  • Forest Soils: Found in hilly and mountainous areas with sufficient rain forests. Loamy and silty in valley sides, and coarse-grained in upper slopes. Acidic with low humus content in snow-covered areas of the Himalayas.
1.7 Soil Erosion and Soil Conservation

The denudation of the soil cover and its subsequent washing down is described as Soil Erosion.

1.7.1 Types of Soil Erosion

  • Gully Erosion: Running water cuts through clayey soils, making deep channels called gullies. The land becomes unfit for cultivation and is known as bad land (or ravines in the Chambal basin).
  • Sheet Erosion: Water flows as a sheet over large areas down a slope, washing away the topsoil.
  • Wind Erosion: Wind blows loose soil off flat or sloping land.

1.7.2 Soil Conservation Methods

  • Contour Ploughing: Ploughing along contour lines to decelerate the flow of water down slopes.
  • Terrace Cultivation: Cutting steps on slopes to restrict erosion (common in Western and Central Himalayas).
  • Strip Cropping: Leaving strips of grass to grow between crops to break the force of the wind.
  • Shelter Belts: Planting rows of trees to stabilize sand dunes and deserts.