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GEO Report No. 248
Report No. : GEO Report No. 248

Report Title : Planting Trial at Yuen Tun and Performance Assessment of Vegetation Species on 44 Man-Made Slopes (2009), 148 p.

Author : K.C. Choi, R.Y.H. Chau & Halcrow China Limited

Abstract

The Government of the Hong Kong Special Administrative Region has committed to making man-made slopes look as natural as possible, blending them with the surroundings and minimizing their visual impact on the built environment. Creating a well-established and sustainable vegetation cover on man-made slope is an essential step to achieve the commitment.

This GEO Report comprises two separate sections. Section 1 is "Identification of Suitable Vegetation Species for Use on Man-made Slopes" while Section 2 is "Review of Landscape Conditions of Man-made Slopes along South Lantau Road after LPM Works".

To establish sustainable vegetation covers, studies and trials have been undertaken by the Geotechnical Engineering Office of the Civil Engineering and Development Department (CEDD) to identify more vegetation species that are suitable for use on man-made slopes. Section 1 of this report presents the results of a planting trial of native small tree and shrub species on slopes 6SE-C/C630, C631 and C632 at Yuen Tun, Tai Lam Country Park. It also discusses the results of a study on performance assessment of vegetation species on twenty man-made slopes.

Twenty-four man-made soil slopes along the Mui Wo to Pui O Section of South Lantau Road were upgraded with landscape treatment applied on part or whole of the slope surface. Section 2 of this report presents the ecological surveys for these 24 slopes at about 6-month intervals, starting from August 2005 to December 2006 (altogether 4 times). The aims were to review and monitor the growth and survival of native and exotic plant species planted or established naturally on these features.


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