Short-cutting the Phosphorus Cycle in Urban Ecosystems - Couverture souple

Gumbo, Bekithemba

Couverture souple

ISBN 10 : 0415384842 ISBN 13 : 9780415384841

Editeur : CRC Press, 2005

Synopsis

This dissertation presents a methodology of short-cutting the phosphorus cycle in urban ecosystems.  In nature, the P-cycle is a circular, closed-loop system, but human activities use and dispose P in a linear, open-ended system leading to the customary environmental problems.  Lake Chivero in Zimbabwe is used as a case study to illustrate the unsustainable practice of discharging valuable and finite phosphorous into drinking water resources.  Short-cutting or closing the P-cycle in the urban environment is closely related to the closure of water cycles.  Closing the P-cycle is dependent on the adoption of ecological sanitation and eco-city concepts.  These concepts lead to solutions, which are source orientated (local and small scale), non-mixing, ecologically sound, closed-loop systems.  Recycling of P in urban ecological agriculture (without synthetic fertilisers) is used in this dissertation to test the feasibility of these concepts. A phosphorus calculator has been developed, based on studies of monthly P-fluxes and stocks, in a high-density suburb of Harare in Zimbabwe, where agriculture is an established activity.   

A propos du livre

À propos de l'auteur

Bekithemba Gumbo

À propos de la quatrième de couverture

Bekithemba Gumbo's PhD dissertation discusses the short-cutting of the phosphorus cycle in urban ecosystems, with particular reference to the example of Harare, Zimbabwe.

Détails de l'édition

• Éditeur: CRC Press
• Date d'édition: 2005
• Langue: anglais
• ISBN 10: 0415384842
• ISBN 13: 9780415384841
• Reliure: Broché
• Nombre de pages: 320
• Coordonnées du fabricant: non disponible
• Personne responsable: gpsr@libri.de; gpsr@libri.de; ; Europaallee 1; Bad Hersfeld; 36244; Allemagne