Composition and aboveground tree biomass of a dry semi-evergreen forest on Mexico’s Yucatan Peninsula

摘要: Abstract Forest biomass estimates are used to help quantify pools and flux of greenhouse gases (e.g., CO2–C) from the terrestrial biosphere atmosphere associated with land-use land cover changes. Such based on direct measurements quite limited for tropical dry forests. The goal this study was assess species composition density in an intact Mexican forest representative biome. We then compared our measured computed a published model current use. A total 72 were found 0.5 ha stand basal area 31.3 m2 ha−1. dominant species, terms biomass, Brosimum alicastrum Sw., Manilkara zapota (L.) Royen, Luehea speciosa Wildl., Pouteria unilocularis (Donn. Sm.) Baehni, Trichilia minutiflora Standl., Spondias mombin Linn. Tree heights ranged up 30 m dbh 82.1 cm. Species-specific regression models developed six most common large (>10 cm dbh) trees nine small ( Y= exp {−2.173+0.868 ln (D 2 TH )+0.0939/2} , where Y is weight (kg), D (cm), height (m). Total aboveground tree estimated be 225 Mg ha−1, dominated (85%) by trees. actual each 195 individual calculated [Estimating change primer. FAO Forestry Paper 134. Food Agriculture Organization United Nations, Rome, Italy, 1997] that 29 underestimated these 31% (37.6 versus 54.4 Mg). Calculated less than 33 species. points value site-specific assessment may contribute more accurate densities currently estimate gas management activity.