LECTURE 9.docx

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International Development Studies
Marney Isaac

LECTURE 9: LOWLANDS Forces of urban migration - Desertification  land is degrading not productive - Mechanized cash crop sector  mrchanition and muntilnational biotrch - Climate But then… - Mexico’s national policy moved from u rural environments to urban environments to o “pull factor”  focusing entirely on one area Water Supply - Mexico city is subsideing – so they are pumping water back into ground - 1 ” environemtnal problem to manifest in Mexico city - Because drainage network set-up by location in intermontane basin, Mexcio city located on a series of confined aquifers made of volcanis ash seperaderd by clay - Lakes Air Pollution - Mexico is located in the subtropical higpressure zone - “falling high pressure occurring in the city” - High altitudes - Factors affecting air pollution - Enclosed intermontane basin - Now-march in descenfins air of STHPZ - Upper later of this subsding aire warmer than lower, causing subsidence inversion ( a body of warm air over coll air that prevents mixing) What can be done? - Develop adequate service and serivec into illegal settlesments ( from richers part to poorer parts) Sustainable urbam development - Pollution management o Transboundary? Cooperation and funding from both developed and develpong ccountries o Regulations, monitoeinf and enforcement Urban environments: conclusion - Mexico xity shows…. - Create enviornments that impedes development - Sick workforces - Unstable housing - Low invest - Decreased economic growth - Balance policy WETLANDS Wetlands environmets and human populations - Hydraulic civilizations o Ancient Egypt, sri lanka, the dutch, three gordes dam - Disease: o Malaria: inhibitor to develop o Schistosomiasisi: worms that burrow in
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