Authors: Martínez de S, Álvarez; Brown, L; Borstad, G; Martell, P; Dickson, J; Freberg, M


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Martínez de S, Álvarez, Brown, L, Borstad, G, Martell, P, Dickson, J & Freberg, M 2011, 'Assessment of reclamation status and identification of water stress using airborne remote sensing', in AB Fourie, M Tibbett & A Beersing (eds), Proceedings of the Sixth International Conference on Mine Closure, Australian Centre for Geomechanics, Perth, pp. 3-10,

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Airborne remote sensing has been used at Highland Valley Copper since 2001 as part of the reclamation program to provide annual high spatial resolution maps of vegetation cover. These maps cover the entire mine site and complement the vegetative assessments. This unique and growing dataset allows us to examine vegetation changes over time with spatial resolution of about 3 m. We can now classify the entire mine site according to its vegetation history and whether or not it has reached and maintained biomass above 1,500 kg/ha, which is the permit threshold for self-sustaining status. The resulting ‘reclamation status maps’ provide a detailed synopsis of the vegetation trends between 2001 and 2010. They are designed to be helpful to reclamation managers and provide a means to focus further remediation effort on specific locations most needing it, rather than having to make wholesale changes to entire sites. An analysis of the ten year time series has revealed statistically significant correlations between the temporal patterns of remotely sensed vegetation cover and precipitation across much of the Highland Valley site. The strength and time scale of these correlations are related to the water retention capability of each location, which in turn is related to slope and material. These factors vary spatially across the mine site. Maps of these precipitations vs. vegetation correlations offer great potential value for reclamation management, because they identify the particular locations most likely to benefit from more rigorous soil remediation measures such as the addition of wood chips, biosolids, or trenching and mounding. In this presentation we demonstrate how a comparison of time series reclamation coverage maps with precipitation response maps can aid in the identification of areas where growth is limited by excessively dry conditions, which can then be targeted for specific interventions thus improving the likelihood of successful reclamation.

Borstad Associates Ltd. (2006) Multispectral mapping of reclaimed areas: extended analysis of the 2005 imagery, Highland Valley Copper 2005 Annual Reclamation Report, Vol. II, report 8.
Borstad, G.A., Brown, L., Martínez, M., Hamaguchi, B., Dickson, J. and Freberg, M. (2009) Airborne mapping of vegetation changes in reclaimed areas at Highland Valley between 2001 and 2008, Presented at the 33rd British Columbia Mine Reclamation Symposium, Cranbrook, BC, 14–17 September 2009, 10 p.
Borstad, G.A., Martínez, M., Larratt, H., Richards, M., Brown, L., Kerr, R. and Willis, P. (2005) Using multispectral remote sensing to monitor aquatic vegetation in ponds at a reclaimed mine site, Presented at the 29th British Columbia Mine Reclamation Symposium, Abbotsford, BC, 19–22 September 2005, 11 p.
Jackson, R.D., Slater, P.N. and Pinter, P.J. (1983) Discrimination of growth and water stress in wheat by various vegetation indices through clear and turbid atmospheres, Remote Sensing of the Environment, Vol. 15,
pp. 187–208.
Jones & Associates Ltd. (2005) Reclamation Permit No. M-11, Volume 1, Unpublished report prepared for Highland Valley Copper by C. E. Jones & Associates Ltd., Victoria, 86 p.
Richards, M., Borstad, G.A. and Martínez de Saavedra Álvarez, M. (2004) Using multispectral remote sensing to monitor reclamation at Highland Valley Copper, Presented at the 28th British Columbia Mine Reclamation Symposium, Cranbrook, BC, 21–24 June 2004, 15 p.
Richards, M., Martínez de Saavedra Álvarez, M. and Borstad, G.A. (2003) The use of multispectral remote sensing to map reclaimed areas at Highland Valley Copper, Presented at the 105th CIM Annual General Meeting, Montreal, QC, May 2003, 9 p.
Tucker, C.J. (1979) Red and photographic infrared linear combinations for monitoring vegetation, Remote Sensing of the Environment, Vol. 8, pp. 127–150.
Tucker, C.J., Newcomb, W.W., Los, S.O. and Prince, S.D. (1991) Mean and inter-year variation of growing-season normalized difference vegetation index for the Sahel 1981–1989, International Journal of Remote Sensing, Vol. 12, pp. 1113–1115.

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