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 Prof. Yongxin Xu  

Position: UNESCO Chair in Hydrogeology
Department: Department of Earth Science
Faculty: Faculty of Natural Science
Qualifications:
Tel: 0219593882
Fax:  
Email: yxu@uwc.ac.za
Research:
 
 
 
 

Biography

 Prof. Yongxin Xu is a Senior Professor of Hydrogeology at the University of the Western Cape and the UNESCO Chairholder in Geohydrology. After brief academic jobs in China and UK, he came to South Africa in 1989 and spent most of his career in groundwater investigations for then Geological Survey and Water Affairs. He has taken up the position of the UNESCO Professor of Hydrogeology based at UWC since 2001. His research, mostly conducted together with his PhD students, has dealt with sustainable groundwater resources management, published more than 50 peer reviewed papers and three books in the areas of groundwater recharge, pollution and management. The scope of his research covers many facets of groundwater, including socio-economical, environmental and cultural, political and institutional issues. These diverse topics have provided multi-disciplinary research opportunities for many postgraduates at both PhD and MSc level. Having facilitated various international workshops and projects, he holds the position of Guest Professor at universities including China and Australia. He is a Commissioner of Africa Groundwater Commission for AMCOW, and the Secretary General of ChinAfrica Water Forum

Publications

Scientific Papers (Peer reviewed journals):

  • Y. Xu & T. Ren (1986)."The Condition of Water-bearing Space Development in the Red bed Mudstone Aquifer in Hengyang Basin", Journal of Chengdu College of Geology, PRC, ISSN 0256-2197, Vol.13 No.2.

  • Y. Xu & L. Fengyi (1988)."Thermodynamic Analysis of Reaction Mechanism of Precipitation of Calcium Carbonate of Karst-porous Water in the Red-bed of Hengyang Basin", Hydrogeology & Engineering Geology, PRC, Vol.1988, No. 1(99), P.32-34.

  • Y. Xu, S. Marais & L. McCaffrey (1991). "A Preliminary Discussion of Aquifer Protection Strategies for Some Areas in Bophuthatswana", Groundwater Quality and Pollution, ISBN-0-620-15829-8, Biennial Ground Water Convention, South Africa, 21- 13 August 1991.

  • K. Pelpola, P. Pienaar & Y. Xu (1992)."Development of Groundwater Resources in Bophuthatswana", Water, Environment and Management, ISBN 0 906055 29 6, Proceedings of the 18th WEDC Conference at Kathmandu, Nepal 30 Aug.-3rd Sept. 1992.

  • Y. Xu, F. Ma & T.C. Partridge (1993). "Time Series Analysis of the Rainfall, Piezometric Fluctuations and Spring Flow in the Dolomitic Aquifer System of Wondergat-Dinokana Area, North East of Mafikeng", Africa Needs Ground Water, ISBN 0-620-17821-3 Vol. 2, An International Groundwater Convention at University of the Witwatersrand, Johannesburg, RSA, 6-8 Sept. 1993.

  • Y. Xu & A.G. Reynders (1995). "A three-tier approach to protect groundwater resources in South Africa", ISSN 0378-4738,  Water SA, Vol.21 No. 3 July 1995.

  • Y. Xu & E. Braune (1995)."Minimum distance as an important concept for borehole source protection in South Africa", Conference Papers of Ground Water'95 held at Volkswagen Conference Centre, Midrand, South Africa, 26-28 September 1995, ISBN:  0-620-19572-X.

  • Y. Xu, G.J. van Tonder, B. van Wyk, E. van Wyk & B. Aleobua (1997). "Borehole dilution experiment in a Karoo aquifer in Bloemfontein", ISSN 0378-4738,  Water SA, Vol.23 No. 2 April 1997.

  • Y. Xu, G.J. van Tonder, B. van Wyk. and, E. van Wyk (1997). "Approximate analytical solutions to tracer experiment under pumping condition", 8th South African National Hydrology Symposium Proceedings, 17-19 November 1997, Pretoria,  ISSN 0-620-21927-0.

  • Y. Xu, G.J. van Tonder, B. van Wyk. and , E. van Wyk (1998). "Recharge-incorporated approximate solution to tracer experiment under pumping condition", ISSN 0378-4738,  Water SA, Vol.24 No. 1 January 1998.

  • K. Wright and Y. Xu (2000). "A water balance approach to the sustainable management of groundwater in south Africa", ISSN 0378-4738, Water SA, Vol.26 No. 2 April 2000.

  • Y. Xu, E. Braune, C. Colvin, D. le Maitre, K. Pietersen and T. Hotom (2000). "Comprehensive determination of resource directed measures for groundwater in South Africa", In Groundwater: Past Achievements and future challenges, Sililo et al (eds.), Balkema, Rotterdam (ISSN 905809 1597).   

  • J.G. van Tonder, J.F. Botha, W.H. Chiang, H. Kunstmann and Y. Xu (2001). "Estimation of the sustainable yields of boreholes in fractured rock formations", ISSN 0378-4738, Journal of Hydrology, 241 70-90.

  • Y. Xu and G.J. van Tonder (2001). "Estimation of recharge using a revised CRD method", ISSN 0378-4738,  Water SA, Vol.27 No. 3 July 2001.

  • Y. Xu and G.J. van Tonder (2002). "Capture zone simulation for boreholes located in fractured   dykes using the linesink concept", ISSN 0378-4738,  Water SA, Vol.28 No. 2 April 2002.

  • Y. Xu, R Titus, SD Holness, J Zhang and G.J. van Tonder (2002). "A hydrogeomorphological approach to quantification of groundwater discharge to streams in South Africa", ISSN 0378-4738, Water SA, Vol.28 No. 4 October 2002.

  • Beekman EH & Xu Y (2003). “Review of groundwater recharge estimation in arid and semi-arid Southern Africa” in Xu & Beekman (Eds) “Groundwater recharge estimation in Southern Africa”, UNESCO IHP Series No. 64, published by UNESCO Paris. ISNB 92-9220-000-3.

  • Bredenkamp DB & Xu Y (2003). “Perspectives on recharge estimation in dolomitic aquifers in South Africa” in Xu & Beekman (Eds) “Groundwater recharge estimation in Southern Africa”, UNESCO IHP Series No. 64, published by UNESCO Paris. ISNB 92-9220-000-3.

  • Xu Y & Beekman EH (2003).  “A box model for estimating recharge – the RIB method” in Xu & Beekman (Eds) “Groundwater recharge estimation in Southern Africa”, UNESCO IHP Series No. 64, published by UNESCO Paris. ISNB 92-9220-000-3.

  • Xu Y & Maclear LGA  (2003). “Recharge estimation in fractured rock aquifer from rainfall – spring flow comparisons: the Uitenhage Spring case” in Xu & Beekman (Eds) “Groundwater recharge estimation in Southern Africa”, UNESCO IHP Series No. 64, published by UNESCO Paris. ISNB 92-9220-000-3.

  • Xu Y, Wu Y & Beekman EH  (2003). “The role of interflow in estimating recharge in mountainous catchments” in Xu & Beekman (Eds) “Groundwater recharge estimation in Southern Africa”, UNESCO IHP Series No. 64, published by UNESCO Paris. ISNB 92-9220-000-3.

  • Jovanovic, N.Z., Maharaj, S., Xu, Y., Jia, H., Titus, R., Usher, B., Dennis, I., Pretorius, J. & Cave, L. (2004). Prioritization and risk assessment of groundwater contaminants in South African urban catchments. In: V. Popov, H. Itoh, C.A. Brebbia and S. Kungolos (eds.) Waste Management and the Environment II, 605-614. Wit Press, Southampton, UK.

  • Wu Y & Xu Y (2005). “Snow impact on groundwater recharge in Table Mountain Group aquifer systems with a case study of the Kommissiekraal River catchment South Africa”. ISSN 0378-4738, Water SA, Vol.31 No. 3 July 2005.

  • Lin L & Xu Y (2006). “A tensor approach to the estimation of hydraulic conductivities in Table Mountain Group aquifers of South Africa”. ISSN 0378-4738,  Water SA, Vol.32 No. 3 July 2006.

  • Seward P, Xu Y & Brendonck L (2006). “Sustainable groundwater use, the capture principle, and adaptive management”. ISSN 0378-4738,  Water SA, Vol.32 No. 4 October 2006.

  • Xu Y & Usher BH  (2006). “Issues of groundwater pollution in Africa” in Xu & Usher (Eds) “Groundwater pollution in Africa”, Taylor & Francis Group plc, London, UK. ISBN 10: 0-415-41167-x, ISBN 13: 978-0-415-41167-7 and ISBN 10: 92-807-2680-3.

  • Adelana SMA & Xu Y (2006).  “Contamination and protection in the Cape Flats Aquifer, South Africa” in Xu & Usher (Eds) “Groundwater pollution in Africa”, Taylor & Francis Group plc, London, UK. ISBN 10: 0-415-41167-x, ISBN 13: 978-0-415-41167-7 and ISBN 10: 92-807-2680-3.

  • Braune E & Xu Y (2006).  “A South African perspective on the protection of groundwater resources” in Xu & Usher (Eds) “Groundwater pollution in Africa”, Taylor & Francis Group plc, London, UK. ISBN 10: 0-415-41167-x, ISBN 13: 978-0-415-41167-7 and ISBN 10: 92-807-2680-3.

  • Els R. De Roeck, Bram J. VanSchoenwinkel, Jenny A. Day, Yongxin Xu, Lincoln Raitt, and Luc Brendonck (2007). “Conservation status of large branchiopods in the Western Cape, South Africa”, Wetlands, Vol. 27, No. 1, March 2007, pp. 162-173

  • Lin L, Jia H and Xu Y (2007). “Fracture network characteristics of a deep borehole in the Table Mountain Group (TMG), South Africa”, Hydrogeology Journal, Vol. 15, No. 7, November 2007

  • Roets W, Xu Y, Raitt L and & Brendonck L (2008). “Groundwater discharges to aquatic ecosystems associated with the Table Mountain Group (TMG) aquifer: A conceptual model”. ISSN 0378-4738,  Water SA, Vol.34 No. 1 January 2008

  • Yongxin Xu  (2008). “Editor’s message: building capacity and partnerships towards sustainable utilization of groundwater in Africa”, Hydrogeology Journal, Vol. 16, No. 3, May 2008

  • W Roets, Y Xu, L Raitt, M El-Kahloun, P Meire, F Calitz, O Batelaan, C Anibas, K Paridaens, T Vandenbroucke, N E C Verhoest and L Brendonck (2008).  “Determining discharges from the Table Mountain Group (TMG) aquifer to wetlands in the Southern Cape, South Africa”, Hydrobiologia (2008) 607: 175-186, DOI 10.1007/s10750-008-9389-x, Springer

  • Eberhard Braune and Yongxin Xu, (2008). “Groundwater management issues in southern Africa – an IWRM perspective”, Water SA (2008) ISSN 0378-4738 = Water SA Vol. 34 No. 6 (IWRM Special Edition) 2008, ISSN 1816-7950 = Water SA (on-line), Available on website http://www.wrc.org.za.

  • Jaco Nel, Yongxin Xu, Okke Batelaan and Luc Brendonck  (2009). “Benefit and implementation of groundwater protection zoning in South Africa”, Water Resource Manage (2009) DOI 10.1007/s11269-009-9415-4, Springer.

  • Kenneth R. Bradbury and Yongxin Xu. (2010). “Foreword to Special Section: Groundwater in Africa”, Ground Water, Volume 48, No. 2, pp. 227-228, March-April 2010.

  • Eberhard Braune and Yongxin Xu (2010). “The role of Ground Water in Sub-Saharan Africa”, Ground Water Volume 48, No. 2, pp. 229-238, March-April 2010.

  • Yongxin Xu, Thokozani Kanyerere, Eberhard Braun, Jaco Nel, Phil Hobbs, Kenneth Bradbury and Nick Robins. (2010). “Best practice for groundwater quality protection”, In Y Xu & E Braune (Eds) “Sustainable groundwater resources in Africa: water supply and sanitation environment” (in press). Published by Taylor & Francis / Balkema, ISBN Hardback: 978 0 41587603 2, ISBN e-Back: 978 0 203 85945 2, The Netherlands and UK.

  • Josue Bahati Chishugi and Yongxin Xu. (2010). “Water supply and sanitation in the Democratic Republic of the Congo”, In Y Xu & E Braune (Eds) “Sustainable groundwater resources in Africa: water supply and sanitation environment”. Published by Taylor & Francis / Balkema, ISBN Hardback: 978 0 41587603 2, ISBN e-Back: 978 0 203 85945 2, The Netherlands and UK.

  • Yasmin Rajkumar and Yongxin Xu. (2010). “Preserving groundwater quality against microbiological contamination through differentiated aquifer management in Africa”, In Y Xu & E Braune (Eds) “Sustainable groundwater resources in Africa: water supply and sanitation environment”. Published by Taylor & Francis / Balkema, ISBN Hardback: 978 0 41587603 2, ISBN e-Back: 978 0 203 85945 2, The Netherlands and UK.

  • Yasmin Rajkumar and Yongxin Xu. (2011). “Protection of borehole water quality in sub-Saharan Africa using minimum safe distances and zonal protection”, Water Resource Manage, Volume 23 No 4, March 2011, ISSN 0920-4741, Springer.

  • Yongxin Xu. (2011). “Book review: Estimating groundwater recharge, by Richard W Healy (Cambridge University Press, 2010)”, Hydrogeology Journal (2011) DOI 10.1007/s10040-011-0764-8, Springer.

  • Jonathan Levy and Yongxin Xu. (2012). “Review: Groundwater management and groundwater/surface-water interaction in the context of South African water policy”, Hydrogeology Journal, Volume 20, Number 2, March 2012, Springer.

  • Yongxin Xu. (2012). “Book review: Urban Geology, edited by Peter Huggenberger and Jannis (Springer Basel, 2011)”, Hydrogeology Journal (2012) DOI 10.1007/s10040-012-0860-4, Springer.

  • Thokozani Kanyerere, Jonathan Levy, Yongxin Xu and John Saka. (2012). “Assessment of microbial contamination of groundwater in upper Limphasa River catchment, northern Malawi”, Water SA Vol.38 No4 July 2012.

  • Huili Gong, Yun Pan and Yongxin Xu. (2012). Spatio-temporal v variation of groundwater recharge in response to variability in precipitation, land use and soil in Yanqing Basin, Beijing, China”, Hydrogeology Journal (2012) 20: 1211-1212. DOI 10.1007/s10040-012-0883-x, Springer.

  • Yongxin Xu. (2013). “Book review: Groundwater Resources Modelling: A Case Study from the UK, edited by M.G. Shepley, M.I. Whiteman, P.J. Hulme and M.W. Grout (The Geological Society of London: Special Publication 364, 2012)”, Hydrogeology Journal (2013) DOI 10.1007/s10040-013-0954-7, Springer.

  • CD Ruben Aza-Gnandji, Yongxin Xu, Lincoln Raitt and Jonathan Levy (2013). “Salinity of irrigation water in the Philippi farming area of the Cape Flats, Cape Town, South Africa”, Water SA Vol.39 No2 April 2013.

  • X Sun, Y Xu, NZ Jovanovic, E Kapangaziwiri, L Brendonck and RDH Bugan (2013). “Application of the rainfall infiltration breakthrough (RIB) model for groundwater recharge estimation in west coastal South Africa”, Water SA Vol.39 No2 April 2013.

  • Innocent Muchingami, Jacobus Nel, Yongxin Xu, Gideon Steyl, and Kelley Reynolds (2013). “On the use of electrical resistivity methods in monitoring infiltration of salt fluxes in dry coal ash dumps in Mpumalanga, South Africa”, Water SA Vol.39 No4 July 2013.

  • Liang Xiao, Yongxin Xu (2013). “Diagnostic Analysis of Pumping Tests Using Derivative of dlgs/dlgt with Case Study”, doi: 10.1111/gwat.12175 Groundwater December 2013.

  • Lin L, H Lin and Y Xu (2014). “Characterisation of fracture network and groundwater preferential flow path in the Table Mountain Group (TMG) sandstones, South Africa”, Water SA Vol. 40 No. 2 April 2014.

  • Sun X, and Y Xu (2014). “A hydraulic test device for free-flowing artesian boreholes with a case study in Table Mountain Group (TMG) aquifers, South Africa”, Water SA Vol. 40 No. 3 July 2014.

  • Diganta Sarma & Yongxin Xu (2014). “An approach to sustainable rural water supply in semi-arid Africa with a case study from Namibia”, Hydrogeology Journal, 2014 (DOI) 10.1007/s10040-014-1178-1.

  • Yongxin Xu. (2014). “Book review: Canada’s Groundwater Resources, edited by Alfonso  Rivera (Fitzhenry & Whiteside, Canada, 2014)”, Hydrogeology Journal, published online: 05 September (2014) DOI 10.1007/s10040-014-1175-4, Springer.

  • Sun Xiaobin, Yongxin Xu, lixi​​ang Lin (2014). “The diagnostic plot analysis of artesian aquifers with case studies in Table Mountain Group of South Africa”, Hydrogeology Journal, published online: 23 November (2014) DOI 10.1007/s10040-014-1203-4, Springer.

  • Seward P, Xu Y, Turton A. (2015a). “Investigating a spatial approach to groundwater quantity management using radius of influence with a case study of South Africa”, Water SA Vol. 41 No. 1 January 2015.
  • Seward P, Xu Y, Turton A. (2015b). “Using backcasting to explore ways to improve the national water department’s contribution to good groundwater governance in South Africa”, Water International, DOI: 10.1080/02508060.2015.1036390.​

Books:​​​​

  • 1995 Y. Xu & E. Braune "A guideline for groundwater protection for the community water supply and sanitation programme", Published by the Department of Water Affairs and Forestry, RSA, ISBN: 0-621-16787-8.

  • 2003 Y. Xu & H E. Beekman (Eds) “Groundwater recharge estimation in Southern Africa”, UNESCO IHP Series No. 64, published by UNESCO Paris. ISNB 92-9220-000-3.

  • 2006 Y Xu & B Usher (Eds) “Groundwater Pollution in Africa”. Published by Taylor & Francis / Balkema, ISBN 10: 0-415-41167-X. UK

  • 2010 Y Xu & E Braune (Eds) “Sustainable groundwater resources in Africa: water supply and sanitation environment”, published by Taylor & Francis / Balkema, ISBN Hardback: 978 0 41587603 2, ISBN e-Back: 978 0 203 85945 2, The Netherlands and UK

  • 2012 Anthony A. Duah and Yongxin Xu “Sustainable Utilisation of Groundwater Resources Under Climate Change: A Case Study of the Table Mountain Group Aquifer of South Africa”, Chapter 7 for the book “Climate Change - Realities, Impacts Over Ice Cap, Sea Level and Risks”, ISBN 978-953-51-0934-1, edited by Bharat Raj Singh.2012

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