State Key Laboratory of Urban Water Resource and Environment School of Environment Harbin Institute of Technology Harbin 150090 China;
State Key Laboratory of Urban Water Resource and Environment School of Environment Harbin Institute of Technology Harbin 150090 China;
Department of Tourism School of Tourism and Hospitality University of Johannesburg Johannesburg South Africa;
State Key Laboratory of Urban Water Resource and Environment School of Environment Harbin Institute of Technology Harbin 150090 China;
Department of Environmental Science University for Development Studies(UDS) Navrongo Ghana;
