TROPICAL RAINFOREST

by SylviaKoa

1098 views

0 comments

0 likes

Center mind map

Collapse/Expand all nodes

Birdview

Toggle birdview

Full screen

TROPICAL RAINFOREST STRUCTURESLayersEmergentMuch Sunlight(50m)tall , straight , smooth trunks with a few branches UndergrowthDark no sunlight(20m)New nodesmall , thin , widely spread.hot and wet environment cause rapid decomposition resulting thin layer of leave litterCanopyThick,woody vines with little sunlight(30m)continuous cover (like an umbrella blocking 90% of sunlight )ADAPTATIONLEAVESROOTSRoots are shallow as nutrients are found in the top layer of soilButtress roots are large which grows 1-5 metres above grounds New nodedrip tips Broad to capture sunlight Waxy , leathery,hairy surface to minimise lose of moisture.narrow downward pointing tips to prevent fungi/bacteria from growingBark and BranchesSmooth Bark allows rainwater to flow easily nodeNew nodeObtain maximum amount of sunlight Fruits And Flower Air is still in tropical rainforesthard to reproduce , so insects help Colourful , strong-smelling to attract insect for pollinationUses of tropical RainforestsWater Catchmentarea drained by river or smaller river to flow to ittropical rainforest are large water catchmentrain water drops and trap in soil before it flows to resevoir supplies water for our daily needsGreen Lungs of the Earthtropical rainforest absorb carbon dioxide from the atmosphere and release oxygen through photosynthesismore than 20% of the earth's oxygen is given out by the amazon forest aloneTropical rainforest act as earth's natural air purifier absorb about 2.4 billion carbon dioxide in 1 yearHabitat to Flora and FaunaHome to more than 2 million species.ample sunlight is converted by plants into energy and food through photosynthesisinturn , plants eaten by animalscontinious canopy is a habitat where plants can grow and animals can live in .Habitat to indigenous people60 million indigenous people dependent on the forest live in tropical rainforest for thousand of yearsprovide them with daily necessitiesSource of Timbertropical rainforest provide wood for fuel in countries where people depend on fire to cooktimber refers to wood used to built many thingsproducts made (doors , window frames , furniture etc.)Medical Applicationalso known as the world largest 'pharmacy'huge source of medicationcancer-fighting propertiesnearly 3,000 plant species have been identified to have such propertiesWhy does Deforestation occurs?Agricultural activitiesEnvironmental ImpactLoss of biodiversityLoss of water catchment areasIncreased risk of flooding,soil erosion and sedimentationEnhanced Greenhouse effectglobal warmingCattle RanchingOperating Large farms to raise cattles LoggingCutting down of trees for timber or building of furnituresMiningto get gold , diamond etc( items that can only be found underground)How does Deforestation impct people and the environment?Economic ImpactDepletion of natural resoursesSocial ImpactEffects on indigenous peopleHow should we manage deforestation?Protection of forested areasReforestationControlled loggingPublic Education