Natural Resources
Overview
Natural resources form the foundation of economic development and human survival. For CG TET Paper II Social Studies, this topic bridges geography with civics and environmental awareness—examiners frequently test the classification of resources, conservation methods, and India-Chhattisgarh specific resource distribution.
Expect 2–4 questions directly from this topic, often combining factual recall (types of soil, major minerals) with application-based questions on conservation strategies. Students must master the classification framework, know India's and Chhattisgarh's resource profile, and understand sustainable development principles. Questions also link to the Environment and Sustainable Development topic, so concepts here have cross-cutting relevance.
The key skill is distinguishing between resource types (renewable vs non-renewable, biotic vs abiotic) and connecting resources to their geographic distribution and conservation needs.
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Key Concepts
- **Classification by Origin**: Biotic resources (forests, fisheries, livestock—derived from living things) versus Abiotic resources (minerals, water, soil—non-living origin).
- **Classification by Renewability**: Renewable resources (solar energy, wind, water, forests) can replenish naturally; Non-renewable resources (coal, petroleum, natural gas, minerals) exist in fixed quantities and deplete with use.
- **Classification by Development Status**: Potential resources (known but not yet utilised), Developed resources (surveyed and currently in use), Stock (exist but lack technology to access), Reserve (subset of stock that can be used with existing technology).
- **Soil as a Resource**: Soil formation takes thousands of years; it is renewable only over geological time. India has six major soil types—alluvial, black, red, laterite, desert, and mountain soil.
- **Water Resources**: Only 2.5% of Earth's water is freshwater; India receives 4% of world's freshwater but has 18% of world's population—making conservation critical.
- **Forest Resources**: Forests cover about 21.71% of India's geographic area (2021 report). They provide timber, fuel, fodder, medicinal plants, and regulate climate.
- **Mineral Resources**: Minerals are non-renewable. India is rich in iron ore, coal, bauxite, mica, and manganese. Chhattisgarh holds significant coal and iron ore deposits.
- **Energy Resources**: Conventional sources (coal, petroleum, natural gas, hydel, nuclear) versus Non-conventional sources (solar, wind, biogas, tidal, geothermal).
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Formulas / Key Facts
| Resource Type | Key Facts for CG TET | |---------------|---------------------| | **Soil** | Alluvial soil—most fertile, found in Indo-Gangetic plains; Black soil—cotton cultivation, Deccan trap; Laterite soil—found in Chhattisgarh plateau regions | | **Water** | India's annual rainfall: ~118 cm average; Major rivers of CG: Mahanadi, Indravati, Sheonath; Groundwater provides 40% of India's irrigation | | **Forests** | Very Dense Forest: canopy >70%; Moderately Dense: 40–70%; Open Forest: 10–40%; CG forest cover: ~41% of state area | | **Minerals** | Chhattisgarh: 1st in tin ore, 2nd in coal reserves (Korba coalfields), significant iron ore (Bailadila), limestone (cement industry) | | **Coal** | Types by carbon content: Anthracite > Bituminous > Lignite > Peat; Korba is the "Power Capital" of CG | | **Petroleum** | Mumbai High, Gujarat, Assam are major oil fields; India imports ~85% of crude oil requirement | | **Non-conventional** | India's solar potential: 750 GW; CG has biogas and small hydro potential in tribal areas |
**Conservation Methods**:
- Soil: Contour ploughing, terrace farming, shelter belts, crop rotation
- Water: Rainwater harvesting, drip irrigation, watershed management
- Forest: Afforestation, social forestry, Joint Forest Management (JFM)
- Minerals: Recycling, using substitutes, controlled extraction
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Worked Examples
**Example 1**: *Classify the following as renewable or non-renewable: (a) Coal (b) Solar energy (c) Forests (d) Iron ore*
**Solution**:
- Coal → Non-renewable (fossil fuel, takes millions of years to form)
- Solar energy → Renewable (continuous supply from sun)
- Forests → Renewable (can regenerate if managed sustainably)
- Iron ore → Non-renewable (mineral, finite quantity)
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**Example 2**: *Why is black soil suitable for cotton cultivation?*
**Solution**: Step 1: Black soil (also called Regur) is found in Deccan trap region. Step 2: It has high clay content and can hold moisture for long periods. Step 3: Cotton requires moderate rainfall and moisture-retentive soil during its long growing season. Step 4: Black soil's self-ploughing nature (develops cracks in summer, aerates itself) suits cotton's root development.
**Answer**: Black soil's high moisture-retention capacity and self-ploughing property make it ideal for cotton, which needs sustained moisture during its long growth period.
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**Example 3**: *Name two conventional and two non-conventional energy sources. Why is there a shift toward non-conventional sources?*
**Solution**:
- Conventional: Coal, Petroleum
- Non-conventional: Solar energy, Wind energy
Reasons for shift: 1. Conventional sources are depleting rapidly (non-renewable) 2. They cause pollution and contribute to climate change 3. Non-conventional sources are cleaner and sustainable 4. Reduces dependence on imported fuels (energy security)
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Common Mistakes
- **Confusing renewable with inexhaustible** → Forests are renewable but CAN be exhausted if overused. Only solar and wind are practically inexhaustible. Renewable means "can regenerate," not "unlimited."
- **Thinking all minerals are metallic** → Students forget non-metallic minerals (limestone, mica, gypsum) and energy minerals (coal, petroleum). Remember the three categories: metallic, non-metallic, and energy minerals.
- **Mixing up soil types and regions** → Alluvial is NOT found in peninsular India's plateau. Black soil is in Deccan, not Indo-Gangetic plain. Create a mental map linking soil type to region.
- **Ignoring Chhattisgarh-specific content** → CG TET emphasises state context. Know that Chhattisgarh is a mineral-rich state: Korba (coal), Bailadila (iron ore), Durg-Bhilai (steel industry). Don't give only all-India examples.
- **Confusing conservation with preservation** → Conservation means wise use and management; preservation means complete protection without any use. Sustainable development requires conservation, not absolute preservation.
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Quick Reference
- **Resource classification**: By origin (biotic/abiotic), by renewability (renewable/non-renewable), by development (potential/developed/stock/reserve)
- **Six soils of India**: Alluvial, Black, Red, Laterite, Desert, Mountain
- **Chhattisgarh minerals**: Coal (Korba), Iron ore (Bailadila), Tin ore (1st in India), Limestone, Dolomite
- **Forest cover target**: National Forest Policy 1988 aims for 33% forest cover
- **Water conservation**: Rainwater harvesting, watershed management, drip irrigation
- **Non-conventional energy**: Solar, Wind, Biogas, Tidal, Geothermal—clean, renewable, reduces carbon footprint