From some literature, I have read that tree regeneration inside 1m by 1m plot should be counted. This information is important to predict/work on the status of the forest. However, I have no idea the use of counting regenerating trees in side a plot to estimate biomass. Would you suggest me how to measure and estimate the biomass of regenerating trees with diameter less than 1 cm? Thanks for you answer!
Measure the diameter at breast height, height of the tree, volume of the tree and wood density and calculate the biomass using allometric equations. Or you can use destructive methods to measure the dry matter of above and below ground biomass. Counting is useful if you know the mean biomass of the species because then you can estimate total biomass :)
Tree biomass estimation in regenerating areas of tropical dry vegetation in northeast Brazil ,https://doi.org/10.1016/j.foreco.2009.12.028
Abstract: Allometric equations have been developed for various different vegetation types but have rarely been validated in the field and never for dry tropical forest such as caatinga. In three areas of semi-arid Brazil, with regenerating caatinga vegetation, we measured and weighed twelve hundred individuals of four tree species and used the data to validate equations previously determined in mature caatinga. They and several other equations developed for tropical vegetations overestimate the biomass (B) of trees from the regeneration areas by more than 20%, possibly because these trees have reduced crowns, with lower branch masses. We then determined new allometric equations for them, validating equations for one site against data of the others and pooling the data if they were cross-validated. The best equations were power ones, based on diameter at breast height (D), with little improvement by including height, crown area and/or wood density (Caesalpinia pyramidalis, B = 0.3129D1.8838; Croton sonderianus, B = 0.4171D1.5601; Mimosa ophthalmocentra, B = 0.4369D1.8493; and Mimosa tenuiflora, B = 0.3344D1.9648 and 0.4138D1.7718).
Thank you so much @Dr. Andrew Paul McKenzie Pegman and @Dr. Anoop Kumar Srivastava, for your fast answers and they are so important suggestions. I will consider it to estimate trees with DBH more than 1cm. However, I still want to know how to estimate biomass of regenerations (Diameter less than 1 cm). As some literature say, I have counted their numbers with in 1m by 1m plot. But, how can I use that counting to estimate their biomass?
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