Biology:Semicircular bund
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Short description: Agricultural water management technique
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A semi-circular bund (also known as a demi-lune or half-moon) is a rainwater harvesting technique consisting in digging semilunar holes in the ground with the opening perpendicular to the flow of water.[1][2]
Background
These holes are oriented against the slope of the ground, generating a small dike in the curved area with the soil from the hole itself, so they capture the rainwater running downhills.[3]
These structures allow water to seep into the soil, retaining in the subsoil a greater amount of moisture. But also, it prevents the loss of fertile soil.[4]
Semi-circular bunds are used to reforest arid zones with irregular rain patterns, allowing the growth of plants and trees, such as in the Sahel.[5]
See also
References
- ↑ "Semi-circular bunds". United Nations. Convention to Combat Desertification. https://www.unccd.int/best-practice/semi-circular-bunds.
- ↑ "Water harvesting techniques". FAO. https://www.fao.org/3/u3160e/u3160e07.htm.
- ↑ "Semi-circular bunds". Freie Universität Berlin. 2 August 2016. https://www.geo.fu-berlin.de/en/v/iwrm/Implementation/technical_measures/Water-harvesting-techniques/micro_catchment/microbasins_basins/semi_circular_bunds/index.html.
- ↑ Peter, Kathuli; Itabari, J.K. (January 2015). "In Situ Soil Moisture Conservation: Utilization and Management of Rainwater for Crop Production". Adapting African Agriculture to Climate Change. Climate Change Management. pp. 127–142. doi:10.1007/978-3-319-13000-2_11. ISBN 978-3-319-12999-0. https://www.researchgate.net/publication/312735551.
- ↑ Page, Thomas (18 July 2022). "Greener pastures: Can ancient eco-engineering help fix our degraded landscapes?". CNN. https://edition.cnn.com/2022/07/18/world/bunds-geoengineering-restoration-climate-scn-spc-intl/index.html.
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