What is terracing and contour bunding?
Terraces usually follow the contour lines of a terrain and might have a gentle slope to allow dewatering. Contour bunds and contour trenches prevent soil erosion by intercepting surface water runoff. They are constructed along lines of equal elevation (contour lines) at a right angle to the slope of a plot of land.
What is the difference between terrace farming and contour bunding?
Answer: The main difference between contour ploughing and terrace farming is the way in which the water flow is controlled. Contour ploughing controls the water flow by cutting furrows into the slope of the land. Terrace farming controls the water flow by creating level platforms on the slope of the land.
What is contour terracing?
KIHO promotes the construction of terraces and trenches on slope contours to detain water and sediment transported by water or gravity downslope. Such measures are known as contour terraces or contour furrowing, lined with geotextiles and filled with rock, stacked or placed to form an erosion resistant structure.
What is contour bunding?
Contour bunding is a proven sustainable land management practice for marginal, sloping, and hilly land where the soil productivity is very low. It is widely adopted by the ethnic minorities of Nepal who practice the shifting cultivation system of farming.
What’s a contour?
1 : an outline especially of a curving or irregular figure : shape the sleek contours of the car The map shows the contour of the coastline. also : the line representing this outline. 2 : the general form or structure of something : characteristic —often used in plural the contours of a melody…
What is the importance of terrace farming or contour bunding?
Answer: Terrace farming and contour ploughing are both used to reduce soil erosion on slopes from tilled fields.
What is contour method?
The contour method determines residual stress by cutting a specimen into two pieces and measuring surface height maps, or contours, on the free surfaces created by the cut.
What are the benefits of terracing?
What are the benefits of a terrace system? The major benefit, of course, is the conservation of soil and water. Terraces reduce both the amount and velocity of water moving across the soil surface, which greatly reduces soil erosion. Terracing thus permits more intensive cropping than would otherwise be possible.
What is field terracing?
What is terracing? Terraces are earthen structures that intercept runoff on moderate to steep slopes. They transform long slopes into a series of shorter slopes. Terraces reduce the rate of runoff and allow soil particles to settle out. The resulting cleaner water is then carried off the field in a non-erosive manner.
What are terraced fields?
terrace cultivation, method of growing crops on sides of hills or mountains by planting on graduated terraces built into the slope. Though labour-intensive, the method has been employed effectively to maximize arable land area in variable terrains and to reduce soil erosion and water loss.
Why is terracing used?
Terracing is a soil conservation practice applied to prevent rainfall runoff on sloping land from accumulating and causing serious erosion. Terraces consist of ridges and channels constructed across-the-slope.
What are the important features of contour farming and terrace farming?
Terrace farming and contour ploughing are both used to reduce soil erosion on slopes from tilled fields….Write is the difference between terrace farming and contour ploughing.
| Terrace farming | Contour ploughing |
|---|---|
| Terrace farming shifts the slope’s structure to create flat areas that provide water catchment. | Contour ploughing suits the slope’s natural shape without changing it. |
What is the two methods of contouring?
Contours can be drawn, if the horizontal or vertical measurements of the properly selected points are known. There are basically 2 methods of contouring – Direct Method and Indirect Method.
What are some disadvantages of terracing?
3. Possible disadvantages of terraces
- 3.1. Disruption of water circulation.
- 3.2. Erosion/mass movement due to poorly designed terraces.
- 3.3. Deterioration of soil quality.
- 3.4. Soil erosion after terrace abandonment.