Land & its Land & its charactercharacter

LanduseWhat is on the land at present? Ag? Forests? Buildings? Playground? Park? Rock? Water? Eroded? Grass?

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

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,

Land & its characterLand & its character

Alluvium soilsAlluvium soils River depositRounded fragmentsLooseFull of voidsVery permeableNot plasticAlong river valleys

Colluvium soilsColluvium soils

Landslide depositAngular, silty not clayey because weathering

not completedAngular fragmentsFull of voids; very permeableLow plasticity;small amount of clay with silty

finesMain fragments: flaky, irregular Bottom of hills

Residual soilsResidual soils

Formed in situWeathered in situHighly weathered fragmentsCompactFew weak fragmentsFew voidsOften impermeableUsually plasticMainly finesFound in ridges

Change in landuse Natural

Forest land can help reduce erosion here in grassland

Forests may not be the solution

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

Different environment, how do we explain?