Unit 1B - the living world (2. tropical rainforests ) Flashcards
how tall do the trees grow
45 m high
how many species are there in a single hectare of a TRF
100 species
where are TRFs found
broad belt through the tropics in central and south America, south east Asia, central africa, northern Australia
what is the average rain fall for TRFs per year
2000mm a year
what temperatures do TRFs thrive in
27 degrees
why is the temperature in Brazil rainforest high
high and constant through out the year, because powerful sun is overhead
why is the rainfall in Brazil rainforest high
global atmospheric circulation causes areas of low pressure to form at the equator. rising air creates clouds and triggers heavy rainfall
what is the soil like
infertile, most nutrients is found on the surface where leaves decompose.
what plants and animals are there
over half of all plant and animal species live on just 7 percent of the earths land
what is biodiversity
providing habitats for an enormous range of species
how do plant adapt to rainforest (physical conditions)
most plants are found in the canopy where there is most light. biotic factors like a close relationship with abiotic factors.
state some facts about malaysia
country in south-east Asia
natural vegetation is the TRF
67% of Malaysia is rainforest
what is deforestation
cutting down of trees often on a very large scale. timber is a highly valued export, lan can be used to make profit.
rate of deforestation in Malaysia
2000 and 2013, total forest lost was an area larger than denmark
what are threats to Malaysia’s rainforests
logging mineral extraction settlement and population growth subsistence farming commercial farming