Disturbed circulation of land use : supporting brownfield sites for sustainable development of land
Weitkamp, Alexandra
Since industrial revolution, the need of area of settlement and infrastructure grows contrary to shrinking of population. Provision of building land takes place mostly on Greenfield sites, so areas of Greenfields get fewer. Hence, Germany set target to reduce land consumption and pretend relationship between land consumption of inner-city to Greenfield as 3-to-1. In addition, development is focused on Brownfield sites. A healthy circulation of land means the change of land use. Greenfield sites get in use and after a span of time use is not needed any more. In consequence, the use has to be changed. Today the circulation is often disturbed especially for old industrial or military sites. The change of use does not happen without support, so Brownfield sites arise. Brownfield sites are areas of derelict land which use is lost often because of structural change. Development is hindered by a lot of reasons. Biggest problems are normally contaminations. So circulation needs external help to initiate a new use even if it is only to release the area as Greenfield sites - but without or secured contaminations. On one side Brownfield sites provide possibility to solve problems of areas with overlapping land uses. They are characterized by their good position in city where often planning law exists. On the other side they are hindered by contamination also as open liability and ownership in many cases. Furthermore declination between land value of rural and urban area encourages investments in Greenfield. Therefore, development of Brownfield sites does not present itself as attractive for investors as it should be in view of land consumption and capacity of Brownfield sites.
Event: XXIII International FIG Congress : Shaping the change
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