Rainforests Lesson 1&2

2,049 views
1,494 views

Published on

GCSE Ecosystems Unit

Published in: Education
0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
2,049
On SlideShare
0
From Embeds
0
Number of Embeds
30
Actions
Shares
0
Downloads
77
Comments
0
Likes
1
Embeds 0
No embeds

No notes for slide

Rainforests Lesson 1&2

  1. 1. Case Study 2 Tropical Rainforest Learning Objective. To know and understand how the rainforest ecosystem operates.
  2. 2. Location
  3. 3. Cross Section of forest
  4. 4. Survival of the fittest… <ul><li>Characteristics of the Tropical Rainforests </li></ul><ul><li>Constant high temperatures – average 27 ˚ c </li></ul><ul><li>High solar light intensity </li></ul><ul><li>Regular and high rainfall – 2000 mm per year (2 metres of rain) </li></ul>
  5. 5. <ul><li>Adaptation to climate </li></ul><ul><li>Trees grow upwards in competition with one another for the sunlight </li></ul><ul><li>Leaf growth is only concentrated in the canopy </li></ul><ul><li>Leaves are thick and hard-wearing to withstand heat of the sun and drip tips to shed heavy rain. </li></ul><ul><li>No branches lower down on the major trees (see fig 1). This saves energy. </li></ul>
  6. 6. Rainforest Floor Dark Forest Floor Ferns are the main vegetation type as their leaves are able to intercept a high proportion of light that reaches them.
  7. 7. FACTS <ul><ul><li>The Amazon Rainforest has been described as the &quot;Lungs of our Planet&quot; because it provides the essential environmental world service of continuously recycling carbon dioxide into oxygen. More than 20 percent of the world oxygen is produced in the Amazon Rainforest. </li></ul></ul><ul><ul><li>One and one-half acres of rainforest are lost every second with tragic consequences for both developing and industrial countries. </li></ul></ul>
  8. 8. Latosol Profile <ul><li>Characteristics </li></ul><ul><li>Red/brown in colour showing iron and oxides in there </li></ul><ul><li>They are 20-30 METRES deep </li></ul><ul><li>Leaching is a big problem. Leaching washes all the organic material downwards then out of the soil. </li></ul><ul><li>Top layer is the most important. All the fallen leaves decay quickly with the high temperatures and humidity. </li></ul>
  9. 9. Building your case study <ul><li>Read over the information on page 94 and 95 in Understanding Geography. </li></ul><ul><li>Fill out the summary sheet. </li></ul><ul><li>Explain how the rainforest vegetation is adapted to the climatic conditions. </li></ul><ul><li>Use pages 182, 186 and 187 in Foundation Wider World. </li></ul><ul><li>Fill in sheet Impact of Deforestation. </li></ul><ul><li>Produce your own diagram to show effects of deforestation in Brazil. </li></ul>

×