Pinus arizonica is a widely distributed tree species growing in temperate forests of Northwest Mexico where it is utilized through different regeneration harvest methods. Yet, management models based on estimations of its productive potential are sorely lacking. In this study, a procedure to create a productive map using site index (SI) equations and Geographic Information Systems (GIS) was developed. A SI model for P. arizonica was created for the study area and used to classify a group of randomly sampled plots on three productivity categories (High, Medium, and Low) for management purposes. Climatic, topographic and edaphic variables were determined on the sampled plots. Then, a statistically-based analysis was performed to identify the climatic, topographic and edaphic variables significantly influencing the productivity levels. Based on the values of these significant variables, a map of productive potential was elaborated for the whole study area. Sites with the highest productivity were those with slopes 12 degrees, soil depths 0.46 m, minimum and maximum mean annual temperatures of 5 degrees C and 18 degrees C respectively, and precipitation 900 mm. This methodology could be considered for similar species/conditions where productivity models do not exist or to update old models rendered obsolete by climate change.
1.Univ Autonoma Chihuahua, Fac Zootecnia & Ecol, Km 1 Perif, Chihuahua 31453, Mexico 2.Oregon State Univ, Dept Anim & Rangeland Sci, 120 Withycombe Hall, Corvallis, OR 97331 USA 3.Univ Autonoma Chihuahua, Fac Ciencias Agrotecnol, Chihuahua 31350, Mexico
Recommended Citation:
Martinez-Salvador, Martin,Mata-Gonzalez, Ricardo,Pinedo-Alvarez, Alfredo,et al. A Spatial Forestry Productivity Potential Model for Pinus arizonica Engelm, a Key Timber Species from Northwest Mexico[J]. SUSTAINABILITY,2019-01-01,11(3)