land and its use

1. Land & itsLand & its
charactercharacter

2. Landuse
What is on the land at present?
Ag? Forests? Buildings?
Playground? Park? Rock? Water?
Eroded? Grass?

3. Landuse
• What effect LU will have on resources (land,
water, vegetation and so on?
• To what extent? Time and space and degree
• Change in landuse (natural vs human made)
• Through landuse change, nature revitalizes
land

4. Thumb rule
• Land System largely determines Land
Form
• Land Form is responsible for land
capability
• Land capability dictates landuse
• Landuse in turn affects land resource
• land degrades, reclaims, builds,

5. Land & its characterLand & its character
Alluvium soilsAlluvium soils River deposit
Rounded fragments
Loose
Full of voids
Very permeable
Not plastic
Along river valleys

6. Colluvium soilsColluvium soils
Landslide deposit
Angular, silty not clayey because weathering
not completed
Angular fragments
Full of voids; very permeable
Low plasticity;small amount of clay with silty
fines
Main fragments: flaky, irregular
Bottom of hills

7. Residual soilsResidual soils
Formed in situ
Weathered in situ
Highly weathered fragments
Compact
Few weak fragments
Few voids
Often impermeable
Usually plastic
Mainly fines
Found in ridges

8. Change in
landuse
Natural
Forest
land can
help
reduce
erosion
here in
grassland

9. Forests may not be the
solution

10. Our
knowledge
about forest
and its
relation with
livelihood
and
environment
comes from
situation like
this

11. Different environment, how do we explain?