Amazon Rainforest

Question 1

What is the Amazons net carbon intake and output?

Answer 1

Lets out 1.7 billion tonnes of carbon dioxide per year
Takes in 2.2 billion tonnes
Net carbon intake = 500 million tonnes

Question 2

What is the total rainfall in the Amazon Rainforest?

Answer 2

Around 2400mm per year

Question 3

How much of the Amazon Rainforest has been deforested?

Answer 3

20% has been deforested in the last 50 years

Question 4

How many trees are in the Amazon Rainforest?

Answer 4

390 billion

Question 5

How tall can emergent trees be?

Answer 5

40m tall

Question 6

How much precipitation remains in the Amazons water cycle?

Answer 6

50-80% of rainfall

Question 7

Largest factor causing deforestation?

Answer 7

Cattle grazing - 80%

Question 8

How many people live in the amazon rainforest?

Answer 8

20 Million people

Question 9

What is the amazon rivers basin discharge?

Answer 9

209,000 metres cubed per second

Question 10

How much rainfall reaches the Amazon floor?

Answer 10

Only half

Question 11

What is the average temperature?

Answer 11

25-30°C

Question 12

How long is the amazon river?

Answer 12

4000 miles

Question 13

water cycle in the amazon rainforest key points

Answer 13

-convectional rainfall daily
-evapotranspiration is very high 50-60% of water is recycled as evapotranspiration rates
-Rapid run off
-High temperatures mean large water stores in atmosphere
-lots of aquifers
-lots of vegetation stores

Question 14

Carbon cycle in the Tropical rainforest key points

Answer 14

-rapid decomposition so lots of exchange between atmosphere
-soil\ground stores are limited because they get broken down and recycled very fast
-high sequestion of co2
-high NPP

Question 15

How much carbon does the Amazon hold?

Answer 15

123 Billion tones

Question 16

app

Answer 16

High temperatures, high convectional rainfall
and intense insolation lead to high primary
production (NPP ~2500 grams/m2
/yr) (how much carbon is produced)
Precipitation can promote mineralization and improve soil nutrients, thereby increasing plant NPP, which is the limiting factor for plants to absorb soil nutrients.

Question 17

Amazonia accounts for …… of global NPP in
terrestrial ecosystems

Answer 17

15-25%

Question 18

where and how big is the amazon rainforest

Answer 18

The Amazon covers a huge area (6.7 million sq km) of South America.

Question 19

rock in amazon

Answer 19

large parts impermeable but there is porous limestone in some areas

Question 20

how much co2 does a tree take in a year

Answer 20

tree takes in 21 of kg of carbon dioxide a year

Question 21

is it the most productive biome

Answer 21

yes

Question 22

What percent of rainforest carbon is stored in the above ground biomass of tree stems, branches and leaves

Answer 22

60%

Question 23

what river flooded

Answer 23

Madeira River in 2014, 60 people died and 68,000 had to be evacuated

Question 24

Projections of future deforestation in Amazonia predict a what percent decline in regional rainfall

Answer 24

20 percent

Question 25

madeira river length

Answer 25

1,450 km, one of the largest tibrutaries of amazon rainforest.

Question 26

What was the record level above normal that the river at Porto Velho reached

Answer 26

19.68m