A reduced growth model based on stand basal area. A case for hybrid poplar plantations in northeast Spain
MetadataShow full item record
Whole-stand models normally require data on initial stand basal area and dominant height. Dominant height measurements are time-consuming and often imprecise, compromising subsequent predictions. Poplar plantations provide a special case where basal area correlates with site index; a whole-stand model
could thus be based on stand basal area. We report a static model constructed by the generalized algebraic difference approach (GADA) for poplar plantations for three different hybrid poplars (Populus × euramericana (Dode) Guinier “I-214”, “MC”, and “Luisa Avanzo”) in northeast Spain. The transition function was based on current stand basal area and was fitted with data from 158 permanent plots ranging from 1- to 17-year-old plantations. Merchantable stand volume was estimated by a volume equation where height was predicted by a height–basal area relationship based on 458 temporary plots. The model differences between clones were compared using the nonlinear extra sum of squares method. Significant differences were detected, while Luisa Avanzo presented the highest merchantable volume at the end of the rotation. Errors in basal area predictions were below 20% within 6 years in the case of Luisa Avanzo and MC clones, and within 3 years in the case of I-214. Our research showed that satisfactory predictions can be obtained using GADA with a single transition function based on an easily measurable variable such as stand basal area.
Is part ofForest Ecology and Management, 2010, vol. 259, p. 2093-2102
Showing items related by title, author, creator and subject.
Carbon isotope discrimination, gas exchange and stem growth of four Euramerican hybrid poplars under different watering regimes Voltas Velasco, Jordi; Hernández, Montserrat; Serrano Endolz, Luis; Pemán García, Jesús (Springer Verlag, 2006)Seasonal changes in carbon isotope discrimination (Δ) and gas exchange traits were assessed in four Populusxeuramericana clones differing in growth potential. Measurements were made during the second year after establishment ...
Estado comparativo de las masas de Pinus uncinata Ram. Potencialmente protectoras frente a aludes de una zona de Andorra y de Cataluña Blanco Ortiz, Ricardo; Pemán García, Jesús; Rodríguez Ochoa, Rafael; Aunós Gómez, Álvaro (Consejo Superior de Investigaciones Científicas (CSIC), 2013)Se aborda el estudio comparativo entre las masas de Pinus uncinata Ram., localizadas en la parroquia La Massana de Andorra y en el Pirineo catalán, desde la perspectiva de su potencial papel protector frente a aludes. La ...
Molecular method for the characterization of Coxiella burnetii from clinical and environmental samples: variability of genotypes in Spain Jado, Isabel; Carranza Rodríguez, Cristina; Barandika, Jesús F.; Toledo, Álvaro; García Amil, Cristina; Serrano, Beatriz; Bolaños, Margarita; Gil, Horacio; Escudero, Raquel; García Pérez, Ana L.; Olmeda, A.S.; Astobiza, Ianire; Lobo, Bruno; Rodríguez Vargas, Manuela; Pérez Arellano, José L.; López Gatius, Fernando; Pascual Velasco, Francisco; Cilla, Gustavo; Rodríguez, Noé F.; Anda, Pedro (BioMed Central, 2012)Background: Coxiella burnetii is a highly clonal microorganism which is difficult to culture, requiring BSL3 conditions for its propagation. This leads to a scarce availability of isolates worldwide. On the other hand, ...