Short-cutting the Phosphorus Cycle in Urban Ecosystems
Seiten
2017
CRC Press (Verlag)
978-1-138-42441-8 (ISBN)
CRC Press (Verlag)
978-1-138-42441-8 (ISBN)
Talks about a dissertation which presents a methodology of short-cutting the phosphorus cycle in urban ecosystems. 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.
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.
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.
Bekithemba Gumbo
Chapter 1 Introduction Chapter 2 Biogeochemistry of phosphorous global transfers and cycles Chapter 3 Description of study area Chapter 4 Establishing fluxes and stocks in an urban-shed Chapter 5 Options for short-cutting the phosphorus cycle Chapter 6 Conclusions Chapter 7 Epilogue
| Erscheinungsdatum | 07.08.2017 |
|---|---|
| Verlagsort | London |
| Sprache | englisch |
| Maße | 152 x 229 mm |
| Gewicht | 453 g |
| Themenwelt | Technik ► Umwelttechnik / Biotechnologie |
| Weitere Fachgebiete ► Land- / Forstwirtschaft / Fischerei | |
| ISBN-10 | 1-138-42441-2 / 1138424412 |
| ISBN-13 | 978-1-138-42441-8 / 9781138424418 |
| Zustand | Neuware |
| Informationen gemäß Produktsicherheitsverordnung (GPSR) | |
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