[Survey of botanical sites: Status and need of preservation [with a separate supplement, 94 p.]]

acidification bogs bosques botanical composition composition botanique comunidades vegetales danemark denmark dinamarca distribution naturelle especies especies protegidas eutrophication eutrophisation farmland forests grasslands herbage lande marais moors natural distribution nature reserves plant communities plant resources plantas silvestres plante sauvage praderas protected species recursos vegetales reservas naturales species terre agricole tremedal vegetation wild plants