24.2. Components of Interception

Try these first

1. 1.

   What is interception loss?

   Hint

   Think about what happens to water on a hot day.

2. 2.

   Define throughfall.

   Hint

   Consider what happens when it rains under a tree.

3. 3.

   What does interception loss refer to?

   • Water that reaches the ground
   • Water held on leaves and lost to evaporation
   • Water flowing down stems

   Hint

   Think about water that evaporates before it can nourish roots.

4. 4.

   True or False: Stemflow only occurs in dry environments.

   • True
   • False

   Hint

   Consider where it rains and how water travels.

5. 5.

   A forest ecosystem has total precipitation of 200 mm, with 50 mm considered interception loss, 30 mm as throughfall, and 20 mm as stemflow. What percentage of the total precipitation is lost to interception, and how does that affect water availability?

   Hint

   Remember to calculate percentage based on total precipitation.

6. 6.

   If a region has received a heavy downpour and only 10% of the water is measured as throughfall, while interception loss is high, how would this impact local watershed management and what strategies could be implemented?

   Hint

   Consider how vegetation and land use might interact with precipitation management.