Small Lakes and Reservoirs in the Hills of Sicily. Maintain, Save and Recover Rural Landscape
Total Page:16
File Type:pdf, Size:1020Kb
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Archivio istituzionale della ricerca - Università di Palermo topic four SMALL LAKES AND RESERVOIRS IN THE HILLS OF SICILY. MAINTAIN, SAVE AND RECOVER RURAL LANDSCAPE. author | affiliation Leone, M.1 Scavone, V.2 Brucoli, G.3 1Dipartimento Città e Territorio, Università degli Studi di Palermo, Italy [email protected] 2Dipartimento Città e Territorio, Università degli Studi di Palermo, Italy [email protected] 3Dipartimento Città e Territorio, Università degli Studi di Palermo, Italy [email protected] ABstract In the transition from nomadic to sedentary, will inevitably and irreversibly alter the people have tried - for their settlements - the environmental balance, the rediscovery of the keywords most plenty of water, and the first cities were landscape value of crops that characterize - founded, in fact, along Tigris and Euphrates today - the sicilian countryside and techniques Rural landscape, Sicily, rivers, extraordinary water resources in a of sustainable conservation of rainwater, it lakes, particular dry climate. seems of great relevance for the study and sustainability, In the most interior of Sicily, which has always protection of soil and for the recovery of the landscape ecology, been characterized by low rainfall, the farmers identity of this territory. biodiversity, - over time - have tried various expedients This abstract introduce to a multidisciplinary water, for the preservation of rain water in order to investigation yet started, which will aim drowght allow its survival and crop. to assess both technical and landscaping The use of new technologies and materials aspects, both economic and agronomic, and has resulted in recently hard impacts for also ecological profiles of this technique to landscape, while construction of small protect the biodiversity in these specialized dams filled with earth, using natural soil fields. The investigation will aim also to give impluviums and the nature of the land, made an historical perspective and an ex-post it possible to irrigate thousands of hectares of evaluation of interventions in order to lead agricultural land otherwise ready for drought. to urban planning, landscape and spatial A “sustainable” technique, which resulted in awareness. A further aim is the design of a the last sixty years, a significant change in the network system which has impacts on the rural landscape of Sicily. quality of rural tourism, which emphasizes, as In a time when the whole country seems to an example, the interaction with the system be threatened - to build indiscriminately of bicycle routes and footpaths, greenways, - by excessive consumption of soil, which that is being developed in Sicily. 1 blue in architecture 09_ PROCEEDINGS_IUAV Digital Library notes 1 | Research proposal and the quality of this produce in terms of in the expression Rural Town Planning” flavour and taste. (Chiodi, 1938), and later used by Toccolini The proposed research project concerns Furthermore, the impact of increasing (1987), is still today the title of one of landscape architecture, hydraulic engineering, desertification should be taken into account the courses in the various Agriculture agricultural, natural and biological sciences, and, for this reason, Italy is a Member of the faculties in Italian universities. Chiodi and it deploys developing multidisciplinary 1997 UN programme, which mandated stated that this antithesis deals with contributions. This research will also include a National Action Plan in addition to the “precision”: town planning, conceived issues relating to the concept of the ‘territory’ implementation of the UN Convention on as a science describing the territory, from the viewpoint of a sustainable use by Climate Change. Indeed, ENEA studies have should deal with the discipline of tourists, and the protection of the landscape identified the Sicilian provinces of Enna, agriculture as an economic activity and and biodiversity. This use by tourists and the Caltanissetta and Catania as areas which as environmental protection. protection of the landscape will take into are susceptible to desertification due to Relationships between agricultural account a desired equilibrium between these their high level of erosion. Various detailed matters, and town and regional two apparent contradictions. studies were also performed in the province planning have certainly improved The idea of developing hillside lakes in Sicily of Agrigento in 2000-2003, particularly throughout these seventy years but originated from the development of new around the town of Licata. the lack of a multidisciplinary dialogue techniques of cultivation on the back of the In light of these considerations, this persists and its effects are evident. The modernising industrialization, which took research group would like to research physical characteristics of one area are place in agriculture after the Second World a number of issues: i) the data required insufficient for determining project War. It aimed at offering farmers enhanced to assess the suitability of locating new choices, in addition to the economic water resources which would facilitate the water resources by means of hill lakes and social trends which must be faced, implementation of experimental projects and with environmentally-friendly constructed together with the environmental obtaining hitherto impossible yields. drainage basins; ii) the potential associated constraints of the same area (Toccolini, The climatic conditions of the region of with protecting habitats surrounding pre- 1987). It is thus necessary to define Sicily, combined with predominantly arid existing lakes, thereby guaranteeing the new paradigms for urban development soils (whose degree of humidity was difficult biodiversity which these water resources where the urban dimension must be to maintain in the dry season) has always would enhance; and iii) the identification surpassed by seeking an equilibrium rendered the cultivation of various plants and promotion of potential links between between human settlements, and the difficult in the spring/summer period. the locations of these drainage basins and forms and forces of nature. This would Moreover, precipitation tails off sharply with the network of pathways (for cyclists, horse- commence with the geography of the arrival of this period. For example, an riders etc), a project which in Sicily is still in areas of study and spaces with which to increase in the cultivation of vines which the planning stages. rebuild relationships which contribute has significantly changed the hilly Sicilian to improving knowledge in this field landscape in recent years, together with 2 | Rural town planning and developing future processes of a considerable increase in land under collective identification. Thus, principles cultivation, has increased the demand for Agricultural, hydraulic engineering and of multi-purpose could be promoted in resources, particularly in extended periods of economics texts of the mid-nineteenth an agricultural landscape, as recently drought. century in Italy, reveal a gloomy picture proposed by the European Union. Recent studies relating to global climate describing a marked economic and change have demonstrated that the need social north-south divide, characterised 3 | Small hillside lakes for irrigation increases exponentially with an by elevated degrees of depopulation throughout recent history increase in temperature and reduced rainfall, in the interior to the detriment of the the result of which is an increase in the rate coastal areas, generally related to the It is from the aforementioned viewpoint of evaporation. In a similar manner, greater broader problem of the south. Whilst that research regarding the effects of variation in rainfall produces a variation in the still topical, this issue presumably applying a particular approach is proposed. rate of evapo-transpiration, which in turn is requires long-term planning which This research has probably contributed to reflected in extended periods of drought. In takes into account the true potential creating the conditions for an economic the absence of the compensating action of of southern Italy, also linking this to its revival in several parts of the interior in Sicily. irrigation, this increase in temperature has agricultural characteristics. At a distance of approximately fifty years a negative impact on agricultural produce The “apparent antithesis which exists from the completion of the first hillside lake 2 topic four Leone, Scavone, Brucoli notes in Sicily, the proposed research will attempt to months and intensity). It was then thought March 1982, is applicable to dams whose sketch an equilibrium by evaluating how the that the technique of hillside lakes would be height exceeds 10 m or whose volume improved irrigation of the land has enabled crucial in maintaining water levels, so much is greater than 100,000 m³. According to cultivation, the differentiation of crops, the so that individual companies could receive these criteria, most authors currently agree raising of livestock, whilst contemporaneously grants for their construction. that we can typically define ’small dams’ as contributing to the protection of a rural The subsequent abandonment of the use those whose height is less than 15 m with landscape and physical culture. of hillside lakes to save water was tied to and a reservoir volume of less than or equal In the remotest parts of the