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HYDC08  12/5/05  5:32 PM  Page 310






                 310    Chapter Eight



                                      Climate change
                                       with increase in
                                     ‘greenhouse’ gases


                                                Increase in
                                               radiative heating

                                                                                  Climate change
                                                                                    impacts on
                           Change in                    Temperature               hydrological cycle
                           ecosystem                     increase






                           Change in         Change in         Change in
                           catchment         rainfall and      sea level
                           land use         evaporation




                                                                  Saline
                                    Change in                     intrusion
                                   soil moisture







                                                       Change in
                            Change in                                             Change in river
                                                       surface and
                           groundwater                groundwater                 flow and extent
                             recharge                                              of wetlands
                                                         quality


                            Change in
                           groundwater
                            levels and
                             baseflow


                 Fig. 8.17 Impacts of increasing ‘greenhouse’ gas concentrations on the natural hydrological cycle emphasizing changes in hydrogeological
                 conditions. After Arnell (1996).
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