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About UNEP
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United Nations Environment Programme
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Newsletter and Technical Publications
<Planning and Management of Lakes and Reservoirs:
An Integrated Approach to Eutrophication
Abridged Version- A Student's Guide>


Control of Land Use

Proper solutions of the wastewater and solid waste problems are a prerequisite, but are not sufficient, to ensure a high water quality in aquatic ecosystems. The application of the solutions mentioned above must be combined with a comprehensive land use plan.

The entire watershed influences water quality. Intensive agricultural or industrial use of the watershed will inevitably influence the quantity and quality of the water and the ability of the ecosystem to cope with pollutants. Green areas are therefore not only important for recreation, but also for reduction of diffuse pollution that results from intensive use. A mosaic of land uses should be represented in the landscape to ensure healthy ecosystems and sustainability.


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  • Brochure
  • IETC Brochure


  • International Year of Forests
  • International Year of Forests


  • World Environment Day
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  • UNEP Campaign
  • UNite to Combat Climate Change