AHO WORKS RESEARCH 2012
        
        
          Urbanism and Landscape
        
        
          Water-based urbanism, that is, the design of cities around the role and dynamics
        
        
          of water, has been a powerful urban impetus in many parts of the world. As a
        
        
          consequence of the location of cities along major rivers, on seacoasts, and in
        
        
          inland and coastal deltas, water urbanism is indeed a predominant part of the
        
        
          history and current status of many cities. However, water urbanismhas changed
        
        
          and continues to face pressures to evolve.
        
        
          Strategically situated in the heart of the Mekong Delta, Cantho (140,200
        
        
          hectares) covers a linear strip along the Hau River (the lower branch of the
        
        
          Mekong). The city developed over the last three centuries in close relation to the
        
        
          dynamics of the region’s liquid landscape. Traditionally, the spatial structuring
        
        
          of the territory drew its identity from overlapping systems of water and road
        
        
          infrastructures, with settlements dispersed over the productive landscape of
        
        
          lowland paddy and highland orchards atop dikes or riversides. This organized
        
        
          dispersal is tied to the intricate balance and interdependent structure of water
        
        
          and productive land, permeable and impermeable surfaces — all organized by
        
        
          hydraulic systems for water management and soil stabilization. An indigenous
        
        
          landscape logic of minute topographical differences (corresponding to differ-
        
        
          ent levels of inundation) orchestrates distinct land uses and regulates balances
        
        
          between built and open landscapes.
        
        
          In the past decade, huge investments in infrastructure have beenmade to improve
        
        
          the city’s role as a regional centre, and to increase connectivity in a triangle with
        
        
          Ho Chi Minh City and Phnom Penh (Cambodia). A revised masterplan is neces-
        
        
          sary to meet the new challenges of the Cantho’s regional role, respond to rapid
        
        
          and substantial urbanization pressures, and the dramatic predictions of climate
        
        
          change. One of the main questions is: How can Cantho simultaneously keep its
        
        
          identity and move to higher levels of productivity (of its agriculture and economy
        
        
          in general)? The revised masterplan was developed after extensive fieldwork,
        
        
          meetings with local stakeholders and work together with SIUP.