Upstream and downstream the Okhta river in St Petersburg The start of an environmental history investigation

Слайд 2

The Okhta river is one of the main tributaries of the Neva

The Okhta river is one of the main tributaries of the Neva
river. . That is why the history of St Petersburg has always been closely connected to the history of the Okhta banks.

Слайд 3

We started to examine the quality of the water in the Okhta

We started to examine the quality of the water in the Okhta
river and the smaller Okkervil river in June 2000, using water samples for biotesting with algaes, plants and molluscs.

Okhtinsky plant

Слайд 4

The results of our investigation were very clear. The toxicological data showed

The results of our investigation were very clear. The toxicological data showed
us that the river is heavily polluted. In the lower parts of the river, the results from the biotests and bioindications showed a high degree of toxic substances. The samples taken upstream, in the upper part of the river Okhta, contained many more living algaes than in the samples taken downstream of the factories.

The algae was Daphnia magna which is easily cultivated and highly sensitive to polluting factors of different origins.

Слайд 5

Conclusion

Our conclusions were that the waters of both the Okhta and Okkervil

Conclusion Our conclusions were that the waters of both the Okhta and
rivers are highly polluted by organic and toxic elements. The factories along the river banks contribute to this pollution. However the banks of the river Okhta have a long industrial history so we started our research with this.

Слайд 6

Ohta area is one of the first industrial zone in St. Petersburg.

Ohta area is one of the first industrial zone in St. Petersburg.

In the 17th century, the Swedish fortress and city of Nyenshans was situated on the south side of the river Okhta along with its brick works. The Okhta river was then called Svarta - the Black river. During the Nordic war at the beginning of the 18th century, the fortress was besieged and captured by tsar Peter I. The city of St Petersburg was subsequently founded on the other side of the Neva river in 1703 and Nyenshans became a garden planted with trees. However the Okhta river became a centre for the Russian navy. Lumber-mills, shipyards and factories were built. The Okhta area became one of the first industrialized zones in St Petersburg.

Слайд 7

Production of powder and synthetic materials on the shores of Ohta.

One

Production of powder and synthetic materials on the shores of Ohta. One
of the oldest factories was the gunpowder mill - Porokhoviye. Production was constantly threatened by frequent explosions and spring floods that destroyed the dams of the mill. Nevertheless gunpowder production continued and by the end of the 19th century, it had become one of the largest factories in St Petersburg. In 1894 the factory started to produce
smokeless gunpowder and work was hard and dangerous. The heaviest explosions occurred one after another over a very short period between December 17th 1912 and January 3rd 1913. At the beginning of the Soviet era, production was changed and the factory was converted into a chemical plant, producing celluloid and bakelite for the electrical industry. In the 1930s, synthetic materials and plastics were produced. Today the factory is called Plaspolimer.

Plastpolimer

Слайд 8

Shipyards and factories on the banks of Ohta

Among other important

Shipyards and factories on the banks of Ohta Among other important industrial
industrial plants were the shipyards founded in 1721 for the Russian
navy. They were developed into mechanical workshops in the late 1800s, producing small
motor-boats and tug-boats. It was here that the first tug-boat in Soviet times was built in the
1930s. Today it is named Petrozavod and builds ships and makes equipment and machinery
for ships.
The Komarovs cotton plant, paper mills and a factory manufacturing cheap roof-covering
materials were also located here.

Petrozavod

Слайд 9

Conclusion

We found that industrialization along the Okhta river had a long

Conclusion We found that industrialization along the Okhta river had a long
history. We will now proceed
with our investigation and examine the production of the industries and factories that have
been built during the last decades. It is possible that we will be able to find out the reasons for
the concentration of pollution in the downstream areas of the industrialized zone.

Слайд 10

Bibliography

Hutchinson T. Project English.Oxford University Press, 2000
Widdowson H.Teaching language as Communication 1999
Ur,

Bibliography Hutchinson T. Project English.Oxford University Press, 2000 Widdowson H.Teaching language as
Penny “A course in Language Teaching. Practice and Theory.”Cambridge University Press 2001
http://s-pb.in/reki/reka-ochta-v-peterburge
http://maps.yandex.ru/
http://images.yandex.ru/yandsearch?text=%
http://images.yandex.ru/yandsearch?rpt=simage&ed=1&text=Daphnia%20magna%20&p=0&img_url=www.rybnehobby.zafriko.pl%2Fpics%2FDaphnia_magna_2.jpg
http://images.yandex.ru/yandsearch?rpt=simage&img_url=img04.urban3p.ru%2Fup%2Fo%2F7362%2Fphoto.jpg&ed=1&text=%D0%BF%D0%BB%D0%B0%D1%81%D1%82%D0%BF%D0%BE%D0%BB%D0%B8%D0%BC%D0%B5%D1%80&p=75
http://images.yandex.ru/yandsearch?p=12&text=%D0%BF%D0%B5%D1%82%D1%80%D0%BE%D0%B7%D0%B0%D0%B2%D0%BE%D0%B4&rpt=image&img_url=img04.urban3p.ru%2Fup%2Fo%2F7362%2Fphoto.jpg&ed=1
http://ru.wikipedia.org/wiki/Охта_(приток_Невы)
Имя файла: Upstream-and-downstream-the-Okhta-river-in-St-Petersburg-The-start-of-an-environmental-history-investigation.pptx
Количество просмотров: 134
Количество скачиваний: 0