外文翻譯---邊緣生態(tài)：城鄉(xiāng)景觀生態(tài)(文件)
【正文】 ingly mobile, pact cities develop into urban networks, industrializing agriculture is being footloose, rural life bees urban life in a green setting. Social segregation, traffic nuisance, urban sprawl and other unwanted impacts of these trends challenge urban and regional planners. The search for planning answers to these issues is further plicated by the need for sustainable development at a global scale. What is the role of ecology in the context of the discussions on the future of town and country? The traditional, and still dominant, approach is based on the polarity of urban and rural worlds. In this perspective, ecology focuses on the ‘nature’ of protected areas and biodiversity. The papers in this special issue explore the prospects of a wider perspective in which natural processes are seen as basic to both, rural and urban development. This article is digging up the fundamental ‘discourses’ underlying the two approaches to ecology and nature. Firstly, the ‘objectoriented’ and ‘processoriented’ discourses are , the prospects of a processoriented discourse are illustrated with plans for the Dutch Randstad and the German Ruhr area. Then, some new concepts are introduced that may strengthen the institutional conditions for the processoriented approach. Discourses, concepts, plans and projects all circle around the central question in this article about the role of ecology in planning the edge of the city.KeywordsUrban and regional planning。 it is not a passive tool in the hands of vested group interests. On the other hand, discourse is neither a fixed language linked to deeply held belief systems such as convictions about the role of the market or the state. Discourse construction and reconstruction results from the interaction between human agency and social structures in a changing world.The two ecology discourses have different potentials both for problem and solution finding. Subsequent sections of this article will illustrate this with a number of current issues in urban rural interaction, and with a number of plans and projects from the Randstad and Ruhr metropolitan areas. As I will demonstrate, the ecology discourse that takes nature as an object is deeply rooted in institutional structures, but its potential to address fundamental issues is limited. The processoriented discourse, however, has promising prospects, but its institutional base is weak.After these examples I discuss two conceptual tools aiming at improving the institutional structure for a processoriented approach to regional planning. The forum–pilotproject strategy focuses on the structural basis for a prominent role of learning from projects and plans. This prises the strategy of the two networks. This strategic concept takes the water and traffic networks as carrying structures for the zoning o
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