why the net sown area and the landunder forests have changed from 1960-61to 2014-15 very marginally

The changes in net sown area and land under forests from 1960-61 to 2014-15 could be marginal due to several reasons:

1. Land Use Policy: The land use policy of a country plays a significant role in determining the net sown area and the land under forests. If the policy is to maintain a balance between agricultural activities and forest conservation, then there might not be significant changes in these areas.

2. Agricultural Practices: The adoption of modern agricultural practices like multiple cropping and use of high yielding variety seeds can increase the productivity per unit area. This reduces the need to increase the net sown area.

3. Forest Conservation Efforts: Efforts to conserve forests and increase the forest cover can also limit the changes in the land under forests. This includes initiatives like afforestation and reforestation, strict regulation against deforestation, etc.

4. Urbanization and Industrialization: Rapid urbanization and industrialization can also limit the changes in the net sown area and the land under forests. This is because these processes often lead to the conversion of agricultural and forest lands into residential, commercial, or industrial areas.

5. Climate Change: Changes in climate patterns can also affect the net sown area and the land under forests. For instance, increased incidences of droughts or floods can reduce the area suitable for cultivation or can lead to the loss of forest cover.

Without specific data or additional context, it's difficult to pinpoint the exact reasons for the marginal changes in the net sown area and the land under forests from 1960-61 to 2014-15. However, the factors mentioned above are some of the potential reasons.