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Sept 11 Human Env and Sust Development

Sept 11 Human Env and Sust Development - Human Environment...

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Unformatted text preview: Human Environment and Sustainable Development Reading: Middleton Chapters 2 and 3 Try to look at these before next class as they will help with the video study questions! Environment • Physical Environment: The biotic and abiotic things and conditions that characterize the world around us • Human Environment: Includes social, cultural, historical, economic and political events and conditions Resources Humans use the environment to meet their wants and needs We classify the things we use as resources Resources are culturally and technologically determined they are not absolute! 4 types of resources: Natural Resources: 1. Continuous : won’t run out 2. Renewable : naturally regenerate within certain limits 3. Non-renewable : not renewable on the human time scale Human Resources: 4. Extrinsic : human resources Environmental problems result due to a mismatch between extrinsic and natural resources • Driving Forces: cause human impact on the environment 1. Population 2. Technology 3. Sociocultural organization • Mitigating Forces: act as checks on the driving forces or their impacts 1. Authoritative Regulation 2. Market adjustment 3. Informal social regulation Population • Human population has grown primarily due to two eras of technological change: – Agricultural Revolution – Industrial Revolution Agricultural Revolution • Agriculture allowed people to store food and feed extra people • This allowed societies to become more complex because it freed up labour for other uses • Higher densities of people could be supported • Cities developed Industrial Revolution • Increased urbanization further because factories needed labour • 50% of people now live in cities • Late 1700s human pop. doubling time was 1000 years • Today it is 41 years • In 1798 Malthus assumed a direct relationship between pop. and resources • He predicted that overpopulation would result in famine, poverty and conflict Was Malthus right?...
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Sept 11 Human Env and Sust Development - Human Environment...

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