Managing natural resources: other examples of management on a small and large scale

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Global issues population and resources
Managing natural resources- other examples of small and large scale solutions
Small scale schemes- low technology treadle pumps in India
Pump water from 7 metres below surface
Simple and cheap to maintain and no diesel is needed which reduces
environmental damage
Allows for more irrigation resulting in higher crop yields
Allows children to stay in school as parents don't need to migrate in search
of work
However, it only works where water table is high enough, so it can be
ineffective in places.
Large scale schemes- 3 gorges dam, China
Cost $26 billon to prevent floods, provide fresh water, tourist income and
Hydro electric power
Supply 10% of China's population with electricity
However, the dam displaced over 1 million people, some of which did not get
adequate compensation. Also it only supplies electricity to 130,000 people
so doesn't have a significant impact on China's energy supply. Also is located
in a tectonically active area so there is a potential for a major natural
Organic farming- minimising environmental damage
Fewer pesticides and fertilisers
Wider biodiversity
However, produce is more expensive as the supply of produce is a lot lower
than inorganic produce.
Hydro-phonics- substitution
Large output on small amount of land
Grows quickly without the need for soil as it only uses water to grow crops
Fertilisers don't run off into rivers as they are used inside
Highly efficient and therefore cheaper
However, it uses electricity to power false lights and is grown artificially
with large inputs of fertilisers and pesticides
Small scale micro grids in Thiba, Kenya
Thiba is a small scattered community in the tea growing region of Kenya. The
people here built their own micro hydro plant with help from NGO's and Kenya's
rural electrification agency. It uses water from a small river that flows
constantly to turn a turbine to generate electricity which is distributed amongst

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Global issues population and resources
the community. The scheme means renewable energy can replace non renewable
energy that is often dangerous such as wood that was burnt in homes and led to
health problems due to the smoke. Wood also burnt quickly so was inefficient.
Also as the scheme was led by the community, it meant the community benefitted
more.…read more


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