Difference between revisions of "Mulch"

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*Mulch should be applied on the surface of the BMP in a layer of 75 -100 mm.
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<li>Mulch should be applied on the surface of the BMP in a layer of 75 -100 mm. </li>
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*As in other landscaping applications, the mulch helps to preserve soil moisture for plant survival, and suppresses weed growth.
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<li>As in other landscaping applications, the mulch helps to preserve soil moisture for plant survival, and suppresses weed growth. </li>
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*Mulch is considered to be an normal finishing touch to many types of formal landscaping. Maintaining mulch application can help increase aesthetic value of LID BMPs.
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<li>Mulch is considered to be an normal finishing touch to many types of formal landscaping. Maintaining mulch application can help increase aesthetic value of LID BMPs. </li>
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*Shredded hardwood mulch is generally recommended for LID facilities. Its fibrous texture knits together somewhat; providing limited erosion control. In areas with particularly high flow (e.g. around inlets) inorganic mulch or coarse decorative aggregate is recommended instead, as these will not float. All organic mulches have the potential to float and migrate in surface flow, after a previously dry period.  
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<li>Shredded hardwood mulch is generally recommended for LID facilities. Its fibrous texture knits together somewhat; providing limited erosion control. In areas with particularly high flow (e.g. around inlets) inorganic mulch or coarse decorative aggregate is recommended instead, as these will not float. All organic mulches have the potential to float and migrate in surface flow, after a previously dry period.  
 
 
<ref> Simcock, R and Dando, J. 2013. Mulch specification for stormwater bioretention devices. Prepared
 
<ref> Simcock, R and Dando, J. 2013. Mulch specification for stormwater bioretention devices. Prepared
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by Landcare Research New Zealand Ltd for Auckland Council. Auckland Council technical report, TR2013/056 </ref></li>
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by Landcare Research New Zealand Ltd for Auckland Council. Auckland Council technical report, TR2013/056 </ref>
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<li>Regular fresh applications of wood mulch also promotes denitrification, reducing nitrates in impacted surface waters. </li>
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*Regular fresh applications of wood mulch also promotes denitrification, reducing nitrates in impacted surface waters.
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[[Category:Materials]]
 
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Revision as of 14:50, 20 September 2017

  • Mulch should be applied on the surface of the BMP in a layer of 75 -100 mm.
  • As in other landscaping applications, the mulch helps to preserve soil moisture for plant survival, and suppresses weed growth.
  • Mulch is considered to be an normal finishing touch to many types of formal landscaping. Maintaining mulch application can help increase aesthetic value of LID BMPs.
  • Shredded hardwood mulch is generally recommended for LID facilities. Its fibrous texture knits together somewhat; providing limited erosion control. In areas with particularly high flow (e.g. around inlets) inorganic mulch or coarse decorative aggregate is recommended instead, as these will not float. All organic mulches have the potential to float and migrate in surface flow, after a previously dry period.

[1]

  • Regular fresh applications of wood mulch also promotes denitrification, reducing nitrates in impacted surface waters.
  1. ↑ Simcock, R and Dando, J. 2013. Mulch specification for stormwater bioretention devices. Prepared by Landcare Research New Zealand Ltd for Auckland Council. Auckland Council technical report, TR2013/056

a top dressing over vegetation beds that provides suppresses weeds and helps retain soil moisture in bioretention cells, stormwater planters and dry swales.

Best management practice. State of the art methods or techniques used to manage the quantity and improve the quality of wet weather flow. BMPs include: source, conveyance and end-of-pipe controls.

a top dressing over vegetation beds that provides suppresses weeds and helps retain soil moisture in bioretention cells, stormwater planters and dry swales.

Low Impact Development. A stormwater management strategy that seeks to mitigate the impacts of increased urban runoff and stormwater pollution by managing it as close to its source as possible. It comprises a set of site design approaches and small scale stormwater management practices that promote the use of natural systems for infiltration and evapotranspiration, and rainwater harvesting.

Includes the protection of soil from dislocation by water, wind or other agents.

A broad category of particulate material used in construction, including sand, gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates, and available in various particulate size gradations.

A shallow excavated surface depression containing prepared filter media, mulch, and planted with selected vegetation.

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