Unit 5

Question 1

What does soil in an ecosystem provide?

Answer 1

• increased fertility through a build up of Matter
• break down of toxins
• enhanced carbon storage
• Reduction of soil erosion/huge increase of water storage

Question 2

What are some soil degrading problems?

Answer 2

• increased likelihood of erosion with altered draining

- wind and water transport soils more easily

Question 3

What are some conservation strategies?

Answer 3

• use organic fertilizer instead on inorganic
• leave crop residue as organic material (stubble) (more pesticides may need to be used)
• crop rotation (legumes for nitrogen)

Question 4

What is terracing and strip planting

Answer 4

Planting across a hill at leaves rather than rows up and down so run off has to go through all plants

Question 5

What is inter and Polly cropping?

Answer 5

Several crops in rows including trees

Question 6

What are scatterbelts

Answer 6

Trees blasted around the edge to protect from wind and prevent soil erosion

Question 7

What is integrated pest meathod

Answer 7

Using lots of methods to remove pests with out over using pesticides (introduce predators)