The present thesis report was carried out in Pabloyacu research and production center during the months of January to August of 2013, has a database for the biometric evaluation of a primary forest, whose results can be used for future research projects as an adaptation to climate change, carbon sequestration, forest biodiversity, flora characterization of primary forest. The biometric evaluation of a primary forest of Pabloyacu Research and Production Center, its objectives in the research were: Determine the parameters of the biometric primary forest; apply the rectangular design in the inventory of biometric primary forest; and assess the value of the importance of a biometric primary forest. The results were that the biometric parameters made in the study area was able to obtain that: Found 14903 individuals shrubby; 717 individuals stem and that only 8% represents a range of 7.1 cm ...