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How can trees help our drainage problems?...

Learn how trees assist in drainage problems by consuming 265 litres of water daily through their roots. Explore the dynamics of transpiration and the impact of tree roots on soil porosity. Engage in challenges to understand and enhance material permeability for effective drainage.

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How can trees help our drainage problems?...

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  1. How can trees help our drainage problems?... 1

  2. How much water does a tree use? 265 litres a day! Most people just drink 2 litres a day! How many days would it take you to drink as much as a tree does in a day?

  3. Can you drink as much water as a tree? • An average tree takes up 265 litres a day from the ground through its roots. • That’s 180ml a minute! • Trees roots are usually as long as the tree is tall, so a tree 5 metres tall collects water 5 metres away from the trunk. • This is the same as a person drinking 750ml of water through a straw in 10 seconds. • How much water can you drink though a straw in 10 seconds? Challenge 1!

  4. Transpiration (The evaporation of water from plants) 8 trees = 2120litres Drain How trees can reduce ‘Creep’.

  5. How else do trees help drainage? • The roots from trees make the soil more porous. This means it can soak up more water. • Which is more porous, a sponge or a stone? • Tip 500ml of water over both items, and measure how much water you collect underneath. • The more porous the material, the less water you should collect. Challenge 2!

  6. How else do trees help drainage? • Can you make a material more porous? • Take a piece of clay and pour water over it. Collect and measure the water. • Experiment with ways of making the clay more porous and repeat the test. Challenge 3

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