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Soil pollution and salinisation - Coggle Diagram
Soil pollution and salinisation
refers
degradation of the Earth's surface.
can lead to poor growth/reduced crop yields, loss of wildlife, soil erosion, desertification
example
litter found on the side of the road
illegal dumping in natural habitats
such as creation of landfills
use of pesticides and other farming chemicals
salts are present in the soil can be mobilised/transported by
groundwater
evaporation
natural events
become present in excessive quantities , soils classed as
salts accumulate
the root zone of crops and pastures
cause losses in production
procees salinisation
negative effects
growth/ producitivity of plants
animals
human activiities
land clearing wide-scale agricoltural practices lead to soil salinisation.
is the increase in thesalt content in soil,
less vegetation intercepting and utilising rainfall
water enters the groundwater system dissolving soluble salts and raising groundwater levels.
Once the water table reaches about 2 metres below the ground surface, evaporation can transport these salts to the soil surface
By understanding and monitoring groundwater movement and quality, agricultural land may be managed to help suppress and avoid such problems