https://padlet.com/mse21/6fwhhz0l7d3d0q9o Urban Soil en-us 2021-01-27 01:49:28 UTC 2021-01-27 03:26:39 UTC hello@padlet.com https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129724287 Impact of Soil Erosion:

]]> 2021-01-27 03:08:39 UTC https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129724287 s10205437 https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129724445 Mitigation of soil erosion:

1. Maintaining a healthy, perennial plant cover.
2. Mulching
3. Placing crushed stone, wood chips, and other similar materials in heavily used areas where vegetation is hard to establish and maintain.
4. Building retaining walls on sloping land. A retaining wall at the base of the slope will block the creep of the soil and slow the collapse.
5. Bunding: is an engineering measure of prevention of soil erosion, used for creating obstruction across the path of surface runoff to reduce the velocity of running water.
6. Creation of windbreakers: evergreen trees are planted around gardens or land, to prevent the wind from blowing away the soil.
7. Avoid soil compaction: when people, animals or machine travel over the soil, they press the soil down causing it to compact. Due to compaction, water and air becomes difficult to penetrate the soil.

Information taken from:
Prevention of Soil Erosion: Different techniques with explanations (thefactfactor.com)

Reduce Soil Erosion (uri.edu)]]> 2021-01-27 03:08:44 UTC https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129724445 s102079601 https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129724627 What causes soil erosion?
-Running water such as rainfall or flooding because water is abundant and produces high intensity.]]> 2021-01-27 03:08:52 UTC https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129724627 Mohamad_Rafael https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129724662 Causes of soil erosion?
Grazing
Grazing animals eat grasses and shrubs and roam through large fields of pasture or natural grasslands. By eliminating the plant cover for a field, grazers expose soil. When so many animals graze the same area of land, the hooves of the animals dig plants out of their roots. If so many animals live there, a land is overgrazed.

Construction
 Constructing buildings and roads churns up the ground and exposes soil to erosion. ]]> 2021-01-27 03:08:54 UTC https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129724662 https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129724665 The most basic and effective way to mitigate soil erosion is to maintain vegetative and ground covers, introducing plants that have deep, fibrous root systems that can hold onto soil well. 
Increasing soil filtration to prevent water logging and runoff is also another way to prevent soil erosion. This is to prevent the constant detachment of soil particles and to maintain the soils structure.
Placing rocks on soils can also help mitigate soil erosion.

]]> 2021-01-27 03:08:54 UTC https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129724665 https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129724935 What causes soil erosion ?
Heavy rainfall and flooding causes soil erosion. The top layer of soil will be washed away due to the high pressure of water. Deforestation also causes soil erosion. The soil becomes loose as there are no roots of trees to keep the soil in place. ]]> 2021-01-27 03:09:01 UTC https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129724935 https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129725245 What causes soil erosion:
Running water, wind]]> 2021-01-27 03:09:15 UTC https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129725245 s10205431 https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129725460 Mitigation of soil erosion: 
Plant more plants so that the roots can hold the soil
Alternate deep rooted plants with shallow rooted plants
Avoid leaving soil bare (no plants)
Cover the top of the soil]]> 2021-01-27 03:09:24 UTC https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129725460 https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129725578 What cause soil erosion: Soil erosion can be caused by deforestation , agriculture, grazing of grasses(part of agriculture) , construction and recreational activities . These are human activities which involves in cutting down of trees and removal of grasses to do their activities like building more houses which cause it to have less plants to hold their soils and make the soil more exposed ass well.]]> 2021-01-27 03:09:28 UTC https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129725578 https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129725653 Cause : 

- High intensity of rainfall :
Impact of raindrops on the soil surface breaks soil particle / aggregates.

- Soil compaction :
Is the soil's capacity to retain water and supply oxygen. When a soil is unable to hold water it leads to erosion.

- Agriculture :
Soil erosion is a natural process but human activities like agriculture greatly accelerates it. Farming takes up land and farmers remove natural vegetation for space. Causes disturbance. ]]> 2021-01-27 03:09:31 UTC https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129725653 s102044081 https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129725731 Mitigation 
Plant more plants as there will be more roots to hold the soil together]]> 2021-01-27 03:09:34 UTC https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129725731 https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129725927 causes of soil erosion
-high intensity rainfall

-deforestation(lack of plant cover, trees help to hold onto the soil and prevent natural causes of erosion)

-agriculture(crop fields replace natural vegetation, exposing top soil)

-type of soil(Sand, sandy loam and loam-textured soils tend to be less erodible than silt, very fine sand and certain clay-textured soils)

]]> 2021-01-27 03:09:41 UTC https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129725927 s10204780 https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129726133 Impact of soil erosion
Land:
-loss of fertile land 
-affect soil structure 
Humans:
-Pollution in river/stream which might affect living organisms in the water
-famers will have problem growing crops/ lower yields ]]> 2021-01-27 03:09:46 UTC https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129726133 https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129726236 Impact of soil erosion:
- reduces the ability of storing water for plants 
- reduce ability to support the biodiversity
- reduce soil fertility, decrease crop yields]]> 2021-01-27 03:09:50 UTC https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129726236 https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129726358 what causes soil erosion
remove of vegetation
plant's root hold the soil in place, preventing it from eroding and harder for the soil aggregates to be washed away.

]]> 2021-01-27 03:09:55 UTC https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129726358 https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129730116 Impact of Soil Erosion:
- Washes away the fertile topsoil
- Affects soil structure adversely
- Harder to grow crops on the soil
- fertile topsoil that washes into water bodies may encourage growth of algae/bacteria, which in turn leads to pollution of water body. ]]> 2021-01-27 03:12:25 UTC https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129730116 https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129732631 Soil erosion is caused by running water from excessive raining and flooding. The man-made topsoil in the urban area is weak and unstable which are easily washed away by running water

]]> 2021-01-27 03:14:14 UTC https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129732631 s102073931 https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129735567 Factors that causes soil erosion:

-Deforestation
-strong winds
-Torrential rainfall 
-Farming
-Grazing
-Logging and mining
-Constructing buildings
-Excessive use of agrochemicals (e.g. phosphoric chemicals causes an imbalance of soil organisms, which can stimulate the growth of bacteria)

]]> 2021-01-27 03:16:25 UTC https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129735567 s10194226 https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129739955 Impact of Soil Erosion:
Washing away of essential sediments and nutrients, soil oxidation, reduced fertility, reduction of topsoil, and reduced ability to hold together.

Mitigation:
Planting cover crops which protect the soil from sun and torrential rains, planting trees with roots that hold soil together. Permaculture farming methods instead of monocultures.

]]> 2021-01-27 03:20:03 UTC https://padlet.com/mse21/6fwhhz0l7d3d0q9o/wish/1129739955