Key Points
Key Points: Introduction to Soil in India
- Soil is a thin layer of weathered rock and humus that supports life.
- Soil forms slowly due to weathering, water, wind, and organic processes.
- Humus increases soil fertility.
- Soil erosion is caused by deforestation and overgrazing.
- Soils are residual or transported (e.g., alluvial soil).
Key Points: Soil Conservation
- Soil conservation means protecting soil from erosion and maintaining its fertility.
- Soil erosion causes loss of fertile topsoil, leading to reduced agricultural productivity.
- Soil conservation helps maintain soil moisture and raise the groundwater level.
- It prevents silting of rivers, floods, droughts, and landslides, especially in hilly areas.
- Soil conservation is essential because soil forms very slowly but can be destroyed quickly, and it supports plants, animals, and human life.
