give the division of degraded land in India along with the reasons in three points
Answers
It is estimated that out of 329 M ha total geographical area (TGA) of India, the area under agriculture is 179.9 M ha (60.47% of TGA) and 120.4 M ha area is degraded through one or more degradation types, which in turn, is affecting the country’s productive resource base. It has been estimated, a total of more than 5000 tonnes of top soil is being eroded every year. Of about 1600 m tonnes, representing 30% of the total eroded area, is permanently getting lost to the sea ([8]. National Remote Sensing Centre (NRSC) prepared the wasteland Atlas of India highlighting the different forms of wastelands their nature and extent. The earliest assessment of the area affected by the land degradation made by the National Commission on Agriculture was 148 M ha, followed by 175 M ha by the Ministry of Agriculture (Soil and Water Conservation Division). The National Bureau of Soil Survey and Land Use Planning .(NBSS & LUP) estimated projected an area of 187 M ha as degraded lands in 1994, and revised it to 147 2004. The National Wasteland Development Board estimated an area of 123 M ha under wastelands. The estimates .vary as these were not based on standard criteria and methodology. Recently, Indian Council of Agricultural .Research (ICAR) and National Academy of Agricultural Research prepared the soil resources of India on 1:250000 .Scale reconciling the soil degradation data in collaboration data produced by the institution
Division of degraded land in India
Explanation:
At present, there are approximately 130 million hectares of land that is degraded in India. Of which about
- 28 percent of it belongs forest degraded area,
- 56 percent of it is due to erosion of water &
- the balance 16 percent rest is impacted by alkaline & saline deposits.
Reasons for degradation are human activists such as deforestation, mining quarrying, over grazing have all contributed significantly towards degradation of land