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Details van artikel 27 van 112 gevonden artikelen
| Titel: |
Development of a sampling strategy for young stands of Eucalyptus sp. using geostatistics |
| Auteur: |
Adriana Leandra de Assis José Márcio de Mello Isabel Carolina de Lima Guedes José Roberto Soares Scolforo Antônio Donizette de Oliveira |
| Verschenen in: |
Cerne |
| Paginering: | Jaargang 15 (2009) nr. 2 pagina's 166-173 |
| Jaar: |
2009 |
| Inhoud: |
This work evaluated the potential of a geostatistical interpolator for defining strata and for comparing the stratificationgenerated by the interpolator with stratification based on data records, on the basis of sampling error. Data were collected from aclonal stand of eucalyptus encompassing 164.08 ha of area and located in the municipality of Aracruz, Espírito Santo state. In 2003,49 plots were allocated and in 2004 another 50 plots were distributed systematically in the area. In 2005, all plots were remeasured.The characteristic evaluated eachmeasurement year was volume outside bark . Spherical and exponential models were fitted to theexperimental semivariograms using the maximum likelihood method. The selected model, following the Akaike Information Criterion,was the exponential model. Based on degree of spatial dependence (SD) it was possible to assess the spatial continuity structure ofthe characteristic of interest. The variable volume outside bark was found to be spatially structured in allmeasurement years and thedegree of spatial dependence varied according to forest age. This indicates that statistical analyses should consider the spatialcomponent in the inference process at the ages considered in this study, in particular area classification based on yield. Resultsshowed that the geostatistical interpolator can be used for establishing strata and locating permanent sample plots in young stands ofEucalyptus sp. |
| Uitgever: |
Universidade Federal de Lavras - UFLA (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 27 van 112 gevonden artikelen
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