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154 Fig. 2: Ponte di Piave 2025 (A), water system (B), guiding model for industrial settlements (C). Conceptual shift A shift in water management paradigm is emerging into regional policy and professional practice. Nevertheless it will take time before it will become a main stream concept. In the frame of the research Ponte di Piave and Ronco all’Adige are considered ecosystems that can regulate flows by input and out put and also by resistance and retention. They can hold, buffer and store water before draining it. For example they can store a surplus of water, and use it to prevent shortage. Store is the condition for recycling. From this perspective closing the cycle is a strategy. Large flows are more difficult to manage than small ones (Marsh 2005: 162). Ponte di Piave and Ronco all’Adige areas exhibit a series of ecosystems at different levels, from the fine scale (e.g. house) to the broad configurations (e.g. settlement). There are good reasons to use potentials at all levels. A chain of promising combinations can be explored from the bottom-up and from upstream to downstream. The strategy, in this perspective is cascade: keep water longer and keep water clean. Both closing the cycle and cascade guide the areas toward been less dependent and less vulnerable (Tjallingii 2009). More space for water is the key factor. In Ponte di Piave and Ronco all’Adige and areas with similar features, the fine structure of open spaces (porosity) which is visible at different scales and the close relation in space among users and water sources (proximity), can be seen and understood as conditions for exploring scenarios and prototypes. Peaks related to paved surfaces become opportunities because they provide an extra amount of water and depressions become opportunities for improving storage capacity and quality. The issue on which are the appropriate water system spatial configurations to make the best use possible of the spatial and socio-economical context in the area remains open for debate. Scenarios The scenario construction enables us to make visible and to evaluate hypothesis on multifunctional water systems at different levels. The conditions that have leaded to the spatial transformations of the areas in recent decades have changed. The scenarios presented assume that the economic crisis affects both manufacture and agriculture. It will result in inertia to radical changes in the density and up scaling of agricultural parcels, industrial buildings and dwellings. Water problems will increase. Strategies of different types of integrated water systems are explored to cope with storm water peaks and uses. What if in Ponte di Piave area water is stored and buffered in a system combining fine harvesting devices across different scales? [Fig. 2] The system makes use of existing field-ditches, settlement-ditches, road-ditches. Former ditches are re-opened or new ones are dug, and ponds are integrated. Storm water is buffered as much as feasible in the system before it is drained out downstream. During the year tanks back up water from roofs. Settlement-ditches and ponds also harvest water overflow from tanks and run off. From April to June field-dit- Fig. 3: Ronco all’Adige 2025 (A), water system (B), guiding model for clay pit systems (C).
155 ches back up rain water and surface water from streams. Water harvested supports local industrial and living daily uses and eventually drop-irrigation of agriculture in summer. Water circulates in the system for keeping it clean. The bank design of ditches and pond accommodates the fluctuation and condition for a heterogeneous vegetative structure; sluices are also introduced along the corridors of the network. Ecological connectivity and circuitry increases. At the landscape level the system results in an integration of networks of fine corridors and isolated patches framing the entire area. What if in Ronco all’Adige water is stored in the streams crossing the area and in the existing clay pits? [Fig. 3] The water system integrates surface water of streams and pits, and the tanks at the plot level. Water board streams and pits are reshaped to have more room for water and to perform an ecological gradient. Water is stored in the pits during the year and also along the streams during the spring. The water exceeding the fluctuation (4) is discharged. The in-out flow is regulated by a system of sluices and pipes. The water stored in the pits circulates through the basins in order to keep its quality. In summer the water harvested (fluctuation volume) is used for the agricultural drop-irrigation. A permanent level of water is maintained in the water bodies as a fundamental ecological condition for the species living in the area. At the building level (dwelling, small firms, industries) rainwater is stored making use of tanks connected with roofs. In case of heavy rainfall, pit and stream systems provide an extra storage capacity reducing the risk of flooding downstream. At the landscape level clay pit systems work as stepping stones and the streams as corridors both embedding the agricultural matrix. References Bevilacqua, P. (1991): Tra Europa e Mediterraneo, In: P. Bevilacqua, (ed.) Storia dell‘Agricoltura Italiana in Età Contemporanea. Venezia: Marsilio: 5-36. Boscolo, C. & Mion, F. (2008): Le acque sotterranee della pianura veneta, I risultati del progetto SAMPAS, ARPAV. Chiaudani, A. (2008): Agriclimatologia statica e dinamica del Veneto. Ph.D. diss., Universita’ degli Studi di Padova, Padova. Corner, J., Tiberghien, G. A., Kugler, E. (2008): Intermediate Natures: The <strong>Landscape</strong>s of Michel Desvigne. Verlag: Birkhauser. Forman, R. T. T. (1995): Land Mosaics. Cambridge: Cambridge University Press. Marsh, W. (2005): <strong>Landscape</strong> Planning: Environmental Applications. Hoboken: John Wiley & Sons Inc. Munarin, S. & Tosi, M. C. (2001): Tracce di Città, Esplorazioni di un Territorio Abitato: l’Area Veneta. Milano: Franco Angeli Rusconi, A. (1991): Evoluzione della rete idrografica di ieri e di oggi attraverso il confronto delle osservazioni in Trasformazioni del territorio e rete idrica del Veneto. Venezia: Istituto Veneto di Scienze, Lettere e Arti. Secchi, B. & Vigano’, P. (2009): Water & Asphalt: A Project of Isotropy. PRIN Research IUAV, Venice: Marsilio. Forthcoming. Tjallingii, S. (2009): Water Flows and Urban Planning, In: E. Bueren, H. van Bohemen, H. Visscher, (ed.) Sustainable Built Envoironments: An Ecosystem Approach. Forthcoming. Both Ponte di Piave and Ronco all’Adige water systems are prototypes for more legible instrumental landscapes in their performances, harvesting rain water, improving air and water quality, enhancing biodiversity, providing space for new public uses and programs (Corner 2008: 10). The prototypes aim to contribute to a process of design and policy innovation towards a more sustainable specific form of city. Papers
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University of Natural Resources and
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Authors of the papers are fully res
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3 Day 2 Thursday, April 30, 2009 Se
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10 Endnotes [1] Bernetti, Casini, M
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12 Urban landscapes need great idea
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14 the term “overall expression
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16 Fig. 2: Initial overall pictures
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18 Evaluation of Open Space Form an
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20 Fig. 5: Other vegetation This st
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22 Type of activity: • Exercise/p
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26 Fig. 2: Rose and Perennial Show
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28 Herbert Bayer’s Megastructures
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30 a large extent the Japanese deve
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32 A Fertile Wilderness: The CPR’
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34 Fig.3 as their destination. The
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36 The Method of Structuralist Land
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38 Fig. 2: SLA implements gender eq
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40 Landscape Evaluation Process. A
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42 systematic application of certai
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44 holders (as Piemonte Region, Riv
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46 Frameworks - Preparing rural lan
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50 Do Landscape Architects make the
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54 Landscape as Urban Structure: th
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56 city extension area but also in
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58 housing neighborhoods. Construct
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60 “massive change, required - ni
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64 cape Journal 6 (1): 4-12 Jackson
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66 Green Idea/Grey Reality Carl Smi
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72 size of rain garden through the
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74 Climate Change asks for Sustaina
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86 Endnotes [1] Anyone interested i
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88 Urban imageability & open space
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90 ning up degraded wetlands, plant
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92 How to balance the multiple role
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96 public spaces in the HBA, and by
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102 Fig. 8: Fragmentary planning mo
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