Annual Net Primary Productivity (ANPP)
Net Primary Productivity is the net amount of carbon assimilated after photosynthesis and autotrophic respiration over a given period of time. It is typically represented in units such as kg/ha/year (annual NPP or ANPP).
(Source: Clark, D.A., Brown, S., Kicklighter, D. W., Chambers, J. Q., Thomlinson, J. R. and Ni, J. (2001), measuring net primary production in forests: concepts and filed methods. Ecological Applications, 11: 356-370. Doi:10.1890/1051-0761 (2001)011[0356:MNPPIF]2.0.CO;2)