Lecture 3

Howeverthey aretypifiedbypronounceddryandwet

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview:  ­oftenbrightredincolourdueto concentrationsofironandaluminumoxides  ­littleaccumulationoforganic  matterduetorapidbacterial   breakdown(7 ­8months)  Tropical Rain Forest Whyaretropicalsoilssoinfertile?  A.Itishot. B.Thesoilsareold. B.The they havent been restructured C. Thetreesgrowtoofast. D.Poormanagement. Tropical Rain Forest • Tropicalforestshavecomeunderincreasingly heavyculturalpressuresinrecentdecades:   ­loggingexploitationinWestAfricaandS.E. Asia,lesssoinS.America.BrazilianAmazonhas over50billionm3oftimberbutlogeproduction isonlyabout4millionm3/annum.  ­rapiddeforestationisresultingfromslashand burn,shiftingcultivationthatisexacerbatedby risingpopulations Tropical Rain Forest  ­clearingtheforest,particularlyintheAmazon,for largescalegrazing,miningexplorationand infrastructuraldevelopment.  http://www.commercialpressuresonland.org/press/amazon ­rainforests ­pay ­price ­demand ­beef ­ soars Tropical Rain Forest • Whentropicalrainforestsareclearedofvegetation theydonotregenerateeasilyanddonotregain theiroriginalstru...
View Full Document

Ask a homework question - tutors are online