[Permanent grasslads as a base of sustainable development of agriculture in Karpaty basins. Conference proceedings]

agricultural development agua superficial bassin versant biodiversidad biodiversity biological preservation conservation biologique conservation du paysage eau souterraine eau superficielle ecologia ecologie ecology grasslands groundwater herbage highlands land management landscape conservation minerales minerals pastizales pastures physiographic features poland pologne polonia praderas productividad productivity sostenibilidad surface water sustainability watersheds