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Rivers & ecological
problems
Made by Florence, Marie,
Delphine, Sarah, Lara,
Laurence, Aurélie


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1. The Lys (Leie)


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* Source : North-France, Lisbourg
* Mouth : Gent, The Scheldt (Schelde)
* Length : 202 km (109 km in Belgium)

* Country border Belgium & France (24 km)


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Functions (the Lys)
* Agriculture : flax

* Buffer
* Water depository (against floods and aid for agriculture


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History (the lys)
* Spinning and weaving of flax
* Favourite place for paintors
* 3 battles ( Allies  German Army, WWI & WW2 )


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* Source: Gouy-Le-Câtelet ( North France )
* Mouth: across Antwerp, towards the
Northsea
* Length: 350 km (138 km canalised )


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* Employment at the harbour of Antwerp

* Transport (-> navigation)
* Carrying of surface water, household water and
industrial waste water

* Important agricultural, ecological
* Drinking-water


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History
* Commercial and strategic importance
* Border between West & East empire
* Closed (Spanish control)
* Opened (French Revolutionary, 1972)


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* Collapsing of the dikes
* The biodiversity
* The Water level of the Scheldt
* Floods


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Solutions:
* To Reinforce the insides of the dikes
* A stability system
* A reinforced concrete wall


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Solution:
* Dredging the river


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Problems
•

Balance of nature

•

Endangered species

• Problems for human life?
Most important causes
• Pollution
• Climate changes


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Solutions
•

Pollution:
- Green energy
- International agreements (Kyoto)
- Clearing water
- STOP dumping of chemical waste

• Climate changes:
- Green energy
- International agreements (Kyoto)
- Decrease of energy


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Problems
•

Death

•

Damamage

• In- or exclosure
Solutions
•
•
•
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Dams
Locks
Decrease of energy
International agreements
Green energy


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