Score:
9.5/15
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Topper’s Copy
GS1
Indian Geography
15 marks
The eastward expansion of the Thar Desert reflects the growing challenge of desertification in India. Examine the major drivers of desertification and suggest measures for sustainable land management.
Student’s Answer
Evaluation by SuperKalam
Demand of the Question
- Examine major drivers of desertification in India (with context of Thar Desert's eastward expansion)
- Suggest measures for sustainable land management
What you wrote:
Desertification is the degradation of productive land into arid, semi-arid and dry sub-humid regions due to climatic variation and certain human activities.
The eastward expansion of the Thar desert into Rajasthan, Haryana and Gujarat highlights the increasing ecological stress and degradation of land resources in India.
[DRAWING: A hand-drawn map of the northwestern part of India, specifically showing the state of Rajasthan. The Thar Desert region is indicated with diagonal shading and has arrows pointing towards the east. The label "▒ → Thar desert." is present, with a second arrow below it and the text "eastward expansion.".]
Desertification is the degradation of productive land into arid, semi-arid and dry sub-humid regions due to climatic variation and certain human activities.
The eastward expansion of the Thar desert into Rajasthan, Haryana and Gujarat highlights the increasing ecological stress and degradation of land resources in India.
[DRAWING: A hand-drawn map of the northwestern part of India, specifically showing the state of Rajasthan. The Thar Desert region is indicated with diagonal shading and has arrows pointing towards the east. The label "▒ → Thar desert." is present, with a second arrow below it and the text "eastward expansion.".]
Suggestions to improve:
- Could strengthen by adding recent data (e.g., ISRO's Desertification and Land Degradation Atlas 2021 showing 30% of India's land under degradation, with 69% area in Rajasthan affected).
What you wrote:
Major Drivers of Desertification
[DRAWING: A hand-drawn map of the northwestern part of India, specifically showing the state of Rajasthan. The Thar Desert region is indicated with diagonal shading and has arrows pointing towards the east. The label "▒ → Thar desert." is present, with a second arrow below it and the text "eastward expansion.".]
1. Climate change:
Rising temperature yields more evaporation and decrease in ground water level. It results in frequent droughts and erratic rainfall.
Ex → Western Rajasthan - Jodhpur, Jaisalmer.
2. Agricultural practices:
Over irrigation and unsustainable agricultural practices results in salinity and over ground water extraction. Excessive fertilizer usage also reduce the soil health.
Example → Salinization in areas near Indira Gandhi Canal due to canal irrigation.
3. Deforestation and vegetation losses:
→ Removal of natural vegetation, mono cropping degrades soil and
Overgrazing also exposes soil and results in decline in soil quality.
4. Human Activities like mining and industrial activities remove fertile top soil, dust pollution degrades land.
Ex → Marble mining in Rajasthan and limestone mining in Gujarat.
5. Urbanisation and Infrastructure:
Urbanisation and expansion of roads prevents water to seep in ground and leads to decline in ground water level. Conversion of agricultural land to for infrastructure development yields in decline of vegetation cover.
| Land degradation |
→ | Decline in soil fertility | → | Reduced crop fertility |
[DRAWING: A flowchart depicting the consequences of land degradation. The box "Decline in soil fertility" leads to "Reduced crop fertility". Below these, a central box labeled "migration" is connected by arrows to "Poverty & ecological imbalance" on the left and "Food insecurity" on the right.]
Major Drivers of Desertification
[DRAWING: A hand-drawn map of the northwestern part of India, specifically showing the state of Rajasthan. The Thar Desert region is indicated with diagonal shading and has arrows pointing towards the east. The label "▒ → Thar desert." is present, with a second arrow below it and the text "eastward expansion.".]
1. Climate change:
Rising temperature yields more evaporation and decrease in ground water level. It results in frequent droughts and erratic rainfall.
Ex → Western Rajasthan - Jodhpur, Jaisalmer.
2. Agricultural practices:
Over irrigation and unsustainable agricultural practices results in salinity and over ground water extraction. Excessive fertilizer usage also reduce the soil health.
Example → Salinization in areas near Indira Gandhi Canal due to canal irrigation.
3. Deforestation and vegetation losses:
→ Removal of natural vegetation, mono cropping degrades soil and
Overgrazing also exposes soil and results in decline in soil quality.
4. Human Activities like mining and industrial activities remove fertile top soil, dust pollution degrades land.
Ex → Marble mining in Rajasthan and limestone mining in Gujarat.
5. Urbanisation and Infrastructure:
Urbanisation and expansion of roads prevents water to seep in ground and leads to decline in ground water level. Conversion of agricultural land to for infrastructure development yields in decline of vegetation cover.
| Land degradation |
→ | Decline in soil fertility | → | Reduced crop fertility |
[DRAWING: A flowchart depicting the consequences of land degradation. The box "Decline in soil fertility" leads to "Reduced crop fertility". Below these, a central box labeled "migration" is connected by arrows to "Poverty & ecological imbalance" on the left and "Food insecurity" on the right.]
Suggestions to improve:
- Can analyze wind erosion patterns (e.g., westerly winds carrying sand eastward during summer months, accelerating expansion into Haryana's Hissar and Sirsa districts)
- Could examine demographic pressure aspects (e.g., Rajasthan's livestock density of 165 animals per sq km aggravating overgrazing in fragile ecosystems)
What you wrote:
Way forward
1. Afforestation and shelterbelts will help building green barriers to arrest sand movement.
2. Sustainable Agriculture: crop diversification, organic farming and drip irrigation.
3. Water Resource Management → Rain water harvesting, check dams, farm ponds etc.
Ex → Hiware Bazar (Maharashtra).
4. Technology: GIS mapping, Remote sensing, Soil Health Cards, early drought warning.
Ex → FASAL initiative by GoI.
5. Government initiatives like PMKSY, MGNREGA, Green India Mission and Nation Action Programme to Combat Desertification.
Way forward
1. Afforestation and shelterbelts will help building green barriers to arrest sand movement.
2. Sustainable Agriculture: crop diversification, organic farming and drip irrigation.
3. Water Resource Management → Rain water harvesting, check dams, farm ponds etc.
Ex → Hiware Bazar (Maharashtra).
4. Technology: GIS mapping, Remote sensing, Soil Health Cards, early drought warning.
Ex → FASAL initiative by GoI.
5. Government initiatives like PMKSY, MGNREGA, Green India Mission and Nation Action Programme to Combat Desertification.
Suggestions to improve:
- Can include biofencing and sand dune stabilization techniques (e.g., Prosopis juliflora plantation creating 550 km green belt along Indira Gandhi Canal to arrest sand movement)
- Could mention traditional practices (e.g., Khadins and johads water harvesting systems in western Rajasthan combining indigenous knowledge with modern watershed management)
- Can highlight community-based approaches (e.g., Joint Forest Management committees in degraded forest areas of Rajasthan with Van Panchayats model)
What you wrote:
Desertification threatens India's ecological security, agricultural productivity and rural livelihood. A combination of scientific land management, climate resistant agriculture and community participation is essential to halt land degradation and build resilient ecosystems.
Desertification threatens India's ecological security, agricultural productivity and rural livelihood. A combination of scientific land management, climate resistant agriculture and community participation is essential to halt land degradation and build resilient ecosystems.
Suggestions to improve:
- Could strengthen by connecting to SDG 15 (Life on Land) and India's commitment to achieve land degradation neutrality by 2030 under UNCCD framework.
Strong answer with good structure, relevant examples, and effective visual aids. However, deeper analytical examination of eastward expansion dynamics and traditional land management practices would strengthen the response significantly. The answer addresses both demands but needs more integration between drivers and the specific geographical pattern mentioned.
Demand of the Question
- Examine major drivers of desertification in India (with context of Thar Desert's eastward expansion)
- Suggest measures for sustainable land management
What you wrote:
Desertification is the degradation of productive land into arid, semi-arid and dry sub-humid regions due to climatic variation and certain human activities.
The eastward expansion of the Thar desert into Rajasthan, Haryana and Gujarat highlights the increasing ecological stress and degradation of land resources in India.
[DRAWING: A hand-drawn map of the northwestern part of India, specifically showing the state of Rajasthan. The Thar Desert region is indicated with diagonal shading and has arrows pointing towards the east. The label "▒ → Thar desert." is present, with a second arrow below it and the text "eastward expansion.".]
Desertification is the degradation of productive land into arid, semi-arid and dry sub-humid regions due to climatic variation and certain human activities.
The eastward expansion of the Thar desert into Rajasthan, Haryana and Gujarat highlights the increasing ecological stress and degradation of land resources in India.
[DRAWING: A hand-drawn map of the northwestern part of India, specifically showing the state of Rajasthan. The Thar Desert region is indicated with diagonal shading and has arrows pointing towards the east. The label "▒ → Thar desert." is present, with a second arrow below it and the text "eastward expansion.".]
Suggestions to improve:
- Could strengthen by adding recent data (e.g., ISRO's Desertification and Land Degradation Atlas 2021 showing 30% of India's land under degradation, with 69% area in Rajasthan affected).
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