sustainable old forestry and impact of economic growth Flashcards
(47 cards)
what does sustainability mean?
seeks to meet the needs and aspirations of the present without compromising the ability to meet those of the future”
what are the two components of economic efficiency?
there is static and dynamic
what is the first law of thermo dynamics?
Energy can be neither created nor destroyed. It can only be converted from one form (chemical as in coal) to another (electricity)
what is the direction of the energy gradient?
nuclear -> solar -> chemical -> heat -> mechanical
what is the second law of thermodynamics?
All energy conversions are less than 100% efficient (not all energy in coal becomes electricity)
what is entropy?
Entropy is a measure of unavailable energy
what is the entropy law?
all energy conversions are irreversible
what is the implication of the entropy law and the second law of thermo dynamics?
in a closed system the avaliable energy can only decrease
what is the matters balance principle?
‘The materials balance principle’: known as ‘the law of conservation of mass’; matter can neither be created nor destroyed
can economic activity create anything in a material sense and what does this mean for materials extracted?
economic activity cannot create anything in a material sense but instead transforms material extracted from the enviroment into more valuable forms to humans. hence all materials extracted will eventually return to the enviroment albeit in a transformed sense
what are the goals of ecological economics?
to develop scientific understandings of the complex linkages between human and natural systems
to use the understanding to develop ecologically sustainable policies
to obtain a fair distribution of resources between generations and groups and also different species
to efficiently allocate scarce resources including natural and social capital
what does ecological economics remind us about sustainability?
Ecol Econ reminds us that “sustainability” is a multi-faceted goal by focusing on the complex interrelationship between different elements of sustainability: ecological, social and economic (ESE). it is concerned with the problem of assuring sustainability in the face of uncertainty and aims to maintain the resilience of ecological and socioeconomic systems by conserving and investing in natural, social and human assets
what is impact?
Can be in the form of ‘resource extraction’ from the environment or ‘returning waste and pollution’ to it
what is the IPAT identidy?
I = P x A x T
I is the impact measured as mass or volume
P is the population size
A is the per capita income in currency units
T is technology, amount of the resource used waste generated per unit of production
what is the view that greater economic activity inevitably hurts the environment based on?
The view that greater economic activity inevitably hurts the environment is based on static assumptions about technology, tastes and environmental investments
how does is the enviromental kuznets curve be derived?
assume the per capita emission of a pollutant as ‘e’ and per capita income as ‘y’
e = A x y so where a is some constant so e increases linearly with ‘y’
if you assume the A = B0 - B1xy so e = B0y - B1y^2
what occurs to the enviromental degradation when the income per capita grows in the pre industrial economies?
the enviromental degradation increases rapidly
what occurs to the environmental degradation when the income per capita grows in the industrial economies?
it increases at a slower rate then the pre industrial economies until it reaches the turning point where it will then decrease after.
what occurs to the enviromental degradation when the income per capita grows in the post industrial economies
the enviromental degradation decreases when income per capita grows
if the enviromental kuznets curve holds what does it imply?
there is no need to curtail growth and trade to protect the environment
instead of being a threat, they can be the means to environmental improvement
what are examples for the EKC hypothesis holding?
sulphur dioxide, nitrogen oxide, suspended particulate matter and deforestation . all the fitted relationships are inverted U shaped
what is the turning point for SO2?
3000 dollars per capita
how is EKC supported across location scale?
there are some support for local/regional impact such as SOx , but not for global impacts such as CO2
what does shafik and bandyopadhyay summarise the EKC?
it is possible to grow out of some environmental problems but there is nothing automatic about doing so. action tends to be taken where there are generalized local costs and substantial private and social benefits.