I have data on DBH and the Height of different agroforestry species from different agroecological conditions, and I want to quantify the site-specific and species-specific aboveground biomass (ABG)by using existing allometric equations, what procedures can I use? am I need to produce the scatter plots? am I need a model fit? DBH and Height should be my independent variables. Is it possible also to add other factors which have not been used in those existing equations such as temperature and precipitation since they can affect the biomass?
Any guidance should be appreciated or any papers where they have used existing allometric equations for tree biomass quantification.