• openAccess   Methodology and conversion factors to estimate the net primary productivity of historical and contemporary agroecosystems 

      Guzmán Casado, Gloria; Aguilera, Eduardo; Soto Fernández, David; Cid, Antonio; Infante Amate, Juan; García Ruiz, Roberto; Herrera González de Molina, Antonio; Villa, Inmaculada; González de Molina, Manuel Sociedad Española de Historia Agraria (2014-05)
      This methodological manual provides basic information to estimate the net primary productivity (NPP) of historical and contemporary cropland, in terms of fresh and dry matter, and gross energy. The methodology and the ...