Valuation of forest ecosystem goods and services and forest natural capital of the Beijing municipality, China

air pollution biodiversidad biodiversity bosques conservation de l'eau conservation des sols economic value ecosistema ecosystems encuestas forestales environmental protection forest land forest products forest resources forest surveys forests productos forestales produit forestier protection de l'environnement recursos forestales soil conservation sostenibilidad sustainability terrain forestier tierras forestales valeur d'estimation valuation water conservation