What are the three processes of land degradation?

The three processes of land degradation are as follows:

1. Soil erosion through wind and water
2. Extreme soil reaction such as structural destruction; compaction extreme moisture regime etc
3. Unfavourable changes in the nutrient content of the soil.

For more relevant articles refer to the links given below:

• UPSC Environment and Ecology Questions
• International Union for Conservation of Nature (IUCN)
• UPSC Environment and Ecology