Dear student,
The unused land that becomes either unproductive or overgrown is called a wasteland.
In 1960-61, the area of barren and unculturable waste land was 12.01% but in 2008-09 it reduced to 8.61%.
As on 2000, wastelands constitute 29.47% in the total land area in India. Types of wasteland are:
1) Water eroded area
2) Saline and alkaline land
3) Forests degraded area
4) Wind eroded area
Regards