What is hot, wet and sticky?
\nOn this webpage you will find information on the following:
\nthe climate of the tropical rainforest
\nwhat the soil is like
\nthe stratification of the vegetation
\nThe soil and climate
\nPicture
\nA rainforest soil is called a latosol
\nThe climate of the tropical rainforest
\nThe average daily temperature is about 28 degrees. It never goes below 20 degrees and rarely above 35 degrees
\nAt least 2000mm of rain falls a year
\nThe atmosphere is sticky – it’s hot and humid
\nThere are no real seasons.
\nEach day’s weather is the same starting off hot and dry, with thunderstorms and heavy rain in the early evening<\/p>\n
Soils
\nSoils are red in colour and rich in iron
\nThey have a thick layer of litter (dead leaves, etc), but only a thin fertile layer – because the leaves rot quickly in the humid conditions
\nThe soils in tropical rainforest are not very fertile, and not particularly good for plants to grow in nutrients are quickly washed or leached out of the soil because of heavy rainfall<\/p>\n
Noises and sounds of the tropical rainforest –
\nhttp:\/\/www.bbc.co.uk\/learningzone\/clips\/images-of-a-tropical-rainforest-biome\/3205.html
\nThe stratification (layers) of the rainforest vegetation
\nThe vegetation is rainforests grows in distinct layers (see the diagram below), and has adapted to the climate and poor soils
\nPicture
\nPicture
\nPlant adaptations to climate
\nThe tropical rainforest’s biodiversity is a response to climate. There are constant high temperatures, with a mean monthly average above 27 degrees Celsius, accompanied by high solar light intensity. Rainfall is regular and high, with above 2000mm falling during the year, which creates humid conditions. Plant communities are fiercely competitive. There is survival of the tallest as the tall trees are drawn upwards by the heat and light, which is why leaf growth is concentrated in the canopy. The leathery upper surfaces of
\nthe trees’ leaves are necessary to withstand the great power of the sun’s rays. The drip tips help the leaves to shed water during the heavy rains. In the lower layers of the forest, sunlight is in short supply. Ferns are adapted to life on the forest floor by having leaves which intercept a high proportion of the light that reaches there. The shrub layer is sparse because a lack of light, although shrubs quickly take advantage of any gap in the forest canopy.<\/p>\n
More plant adaptations:
\ntrees are branchless and the trunks are tall and thin – this helps them to reach the light from the sun more easily
\ntrees are evergreen – this helps them take advantage of the continuous growing season. The can shed their leaves at any time of year
\nleaves often have drip tips – this helps them to shed the heavy rain, and also helps protect them from hungry insects
\nsome trees have large buttress roots – these support them in the shallow soil. Others spread their roots over the surface – this helps them capture as many of the available nutrients as possible
\nlianas are woody climbing vines which drape the rainforest. They climb high into the canopy to reach the sunlight, dropping their roots down to the ground
\nepiphytes are plants that grow in the branches of trees – they use the tree for support, not for food<\/p>\n","protected":false},"excerpt":{"rendered":"