deck_3939393 (1) Flashcards
underreported
how much primary rainforest has been cut down.
lost how many hectares in 2012?
840,000
world’s 3rd biggest
emmiter of CO2 behind China and the US with 85% coming from forest destruction/degradation
deforestation definition
the felling of trees for human use and economic development
impacts of deforestation
NAME?
early human activities in 1500’s
drilling for oil leaves scars on the landscape 1980’s , minimal impact due to lack of technological developemtn
timber industry since 1960’s
by 2005, rainforest cover had fallen to 49% from 82% in 1960sprovided government with foreign earning to develop economycoral reefs ave been damaged by clouded water due to soil in the river
1980-2000 palm oil plantations
area under palm oil increase from 400,000 to 300,000 ha ]. these areas had supported the Sumatran elephant and orang-utan
mining oil and gas plantations in 1970’s
international companies have developed large scale open cast mining e.g. grasberg in Irian Jaya. mercurary and cyanide have contaminated rivers killing fish and polluting the sea floor
urbanisation since 2006
-population totaled at 25 million and was growing by 1.1% per year.-coral reefs poisoned by cyanide which stuns fish
shifting cultivation
extended so crops are grown for longer periods which exhausts the soilsediment released from logging and urbanisation has clouded water, preventing algae blooms for photosynthesis
management: ban export on raw logs
World bank expressed concerns about deforestation. some illegal logging still occurs
management: replant fast growing species e.g pine
attempt to maintain biodiversitydeveloped countries pay for forest to be conserved rather than felled (carbon offsetting)
management: WWF
conserve threatened species e.g. Sumatran orang-utan
management: 50 national parks
conserve 20% rainforest. zoned into intensive areas including villages and tourist enclaves
