In Contour barriers:
(a) Stones, grass, and soil are used to create barriers and trenches are dug in front of these barriers to capture and collect water.
(b) Rocks are stacked to slow down the flow of water, preventing the formation of gullies and minimizing soil erosion.
(c) Rows of dense trees are planted between crops in flat farming areas to reduce soil erosion, acting as a barrier against wind and helping preserve soil structure.
(d) Rows of trees are planted to control wind movement, protecting the soil cover from erosion in coastal and arid regions.

Question

In Contour barriers:
(a) Stones, grass, and soil are used to create barriers and trenches are dug in front of these barriers to capture and collect water.
(b) Rocks are stacked to slow down the flow of water, preventing the formation of gullies and minimizing soil erosion.
(c) Rows of dense trees are planted between crops in flat farming areas to reduce soil erosion, acting as a barrier against wind and helping preserve soil structure.
(d) Rows of trees are planted to control wind movement, protecting the soil cover from erosion in coastal and arid regions.

ONLiNE UPSC · Accepted Answer

Contour barriers are embankments of stones, grass, and soil built along contour lines to reduce runoff and soil erosion. The trenches in front of these barriers help in water conservation by slowing down water movement and allowing it to percolate into the soil.

Incorrect options :
(b) Rocks are stacked to slow down the flow of water, preventing the formation of gullies and minimizing soil erosion.This describes gully plugging, not contour barriers.
(c) Rows of dense trees are planted between crops in flat farming areas to reduce soil erosion, acting as a barrier against wind and helping preserve soil structure. This describes agroforestry or shelterbelts, not contour barriers.
(d) Rows of trees are planted to control wind movement, protecting the soil cover from erosion in coastal and arid regions. This refers to windbreaks, which are not the same as contour barriers.

Website Link

Test Your Knowledge

Student Resources


E Question 1	⏱ 0
In Contour barriers: (a) Stones, grass, and soil are used to create barriers and trenches are dug in front of these barriers to capture and collect water. (b) Rocks are stacked to slow down the flow of water, preventing the formation of gullies and minimizing soil erosion. (c) Rows of dense trees are planted between crops in flat farming areas to reduce soil erosion, acting as a barrier against wind and helping preserve soil structure. (d) Rows of trees are planted to control wind movement, protecting the soil cover from erosion in coastal and arid regions.