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Organic engineering systems (OES) are organic, hydroponic, aeroponic or aquaponic farming technologies that are designed as a building engineering system. The main purpose of these technologies is to grow food in buildings. OES are agricultural technologies and are considered a sub-section of ecological engineering, primarily because they mimic natural ecosystems to produce food and are defined as urban horticulture.
References
Bergen, Scott D., Susan M. Bolton, James L. Fridley. (2001). Design Principles for Ecological Engineering. Ecological Engineering, V.18, 201-210.