Land-use impact on plant communities in semi-natural sub-alpine grasslands of Budalen, central Norway

abonos alpine grasslands aradura arbuste arbustos biodiversidad biodiversity bosques comunidades vegetales conduite des herbages conservation de la nature corte cutting ecological succession engrais fertilizers forests grassland management grasslands grazing herbage highlands labour malezas manejo de praderas mauvaise herbe natural grasslands nature conservation pastoreo plant communities plant succession plante ligneuse ploughing praderas praderas alpinas prairie alpine shrubs species diversity weeds woody plants