为了配合2001年4月德国园艺展览的举办,波茨坦市组织了一次花卉馆设计竞赛,建筑在随后的6个月展览中由一所商业机构来运营,他们把它改成了一个活动场馆,叫作生物圈。竞赛的一等奖方案通过这次公私合作的投资得以实现,它依照花卉展的要求收回了德国被荒废或破坏的土地,维护了公? In keeping with the German horticultural exhibition in April 2001, the city of Potsdam organized a flower-house design contest, which was run by a commercial establishment during the subsequent 6-month exhibition and converted to an event venue called Biosphere. The contest's first prize program was realized through this public-private partnership, which took back the abandoned or destroyed land in Germany in accordance with the requirements of the Flower Show and upheld the public security.