Land, Soil and Energy Conservation
NCERT Class 10 • Contemporary India II • Chapter "Resources and Development" | NCERT Class 10 • Science • Chapter "Management of Natural Resources"
Land, Soil and Energy Conservation
Land is a fixed resource: no more of it can be produced, and what is degraded takes decades to restore. Energy resources such as coal and petroleum are equally finite, which is why the conservation of both follows the same logic of using less and using better.
Land Degradation and Soil Conservation
- Land degradation means the loss of the land's productive capacity through erosion, salinity, waterlogging, mining waste and industrial effluent.
- Deforestation, overgrazing, faulty irrigation and mining are the main causes.
- Overgrazing is a serious cause in dry regions, and waterlogging with salinity is common where irrigation has no drainage.
- Soil erosion by wind and water is the most widespread form, with gully erosion producing badland as in the Chambal ravines.
- Contour ploughing, terrace farming, strip cropping and shelter belts control erosion directly.
- Afforestation, proper grazing management, check dams and gully plugging restore degraded land.
- Organic manure, crop rotation and reduced chemical use maintain the soil's structure and fertility.
Energy Conservation
- Coal and petroleum were formed over millions of years and will not be replaced within human time.
- Burning them also releases carbon dioxide, oxides of sulphur and nitrogen, and particulate matter.
- Energy conservation means using less energy for the same work, which is cheaper and faster than building new capacity.
- Practical measures include efficient appliances, better building design, public transport, well maintained vehicles and avoiding waste.
- Shifting to solar, wind, biogas, small hydel and other renewable sources reduces dependence on fossil fuel.
- Energy audits in industry identify exactly where energy is being wasted.
- The principle throughout is reduce, reuse and recycle, applied to materials and energy alike.
| Problem | Cause | Remedy |
|---|---|---|
| Soil erosion | Deforestation, faulty ploughing | Contour ploughing, terracing, tree cover |
| Waterlogging and salinity | Irrigation without drainage | Proper drainage, gypsum |
| Fossil fuel depletion | Rising demand | Efficiency and renewable energy |
Land degradation — the loss of the productive capacity of land through erosion, salinity, waterlogging or contamination.
Hindi me samjhein
ऊर्जा संरक्षण का अर्थ है उसी काम के लिए कम ऊर्जा लगाना। यह नई क्षमता बनाने से सस्ता और तेज है, इसीलिए इसे अक्सर सबसे सुलभ ऊर्जा स्रोत कहा जाता है।
Exam me kaise aata hai
- Ploughing across the slope is called — contour ploughing
- Rows of trees planted against wind are — shelter belts
- Irrigation without drainage causes — waterlogging and salinity
- Using less energy for the same work is — energy conservation
UPSC/State PSC ke liye
- Energy conservation is often called the cheapest source of energy, because a unit saved costs far less than a unit generated and needs no new plant, fuel or transmission.
- Land degradation is hard to reverse because soil forms over centuries, so prevention is far more efficient than restoration.
Yahan confuse hote hain
✗ Irrigation always improves land | Irrigation without drainage causes waterlogging and salinity | ✓
✗ Energy conservation means going without | It means using less energy for the same work | ✓
✗ Degraded land can be restored quickly | Soil formation takes centuries, so restoration is slow | ✓
Ek nazar me
- Land degradation comes from erosion, salinity, waterlogging and contamination.
- Contour ploughing, terracing, shelter belts and afforestation conserve soil.
- Coal and petroleum are finite and polluting.
- Energy conservation and renewable sources together reduce dependence on fossil fuel.
Ab practice karein
Natural resources aur conservation se har exam me seedhe questions bante hain. ExamAtlas ke mock test se abhi practice karein.