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dc.contributor.authorComas Rodríguez, Carlos
dc.contributor.authorMateu, Jorge
dc.contributor.authorDelicado, Pedro
dc.date.accessioned2017-04-19T07:10:36Z
dc.date.available2017-04-19T07:10:36Z
dc.date.issued2011-11
dc.identifier.citationCOMAS RODRÍGUEZ, Carlos; MATEU, Jorge; DELICADO, Pedro. On tree intensity estimation for forest inventories: Some statistical issues. Biometrical Journal (2011), v. 53, issue 6, pp. 994-1010ca_CA
dc.identifier.urihttp://hdl.handle.net/10234/167237
dc.description.abstractThe effect of the plot shape, number of subplots and their spatial arrangement on the sample variance for spatially explicit point populations is analysed for a simple intensity estimator. We derive the sample variance and covariance for sampling designs involving more than one subplot. Some nu- merical approximations are also presented. If a clustered point pattern has to be sampled, the best strategy to reduce the sample variance is to consider as many rectangular subplots as possible, for a prescribed total sample area, distributed over a grid. In contrast, if a regular point pattern is to be sampled, then a single circular subplot should be considered. If we assume that the point config- uration is Poisson, then we can consider any subplot shape and spatial distribution ensuring no overlapping between the subplots. A case study in forestry is considered to assess the validity of our resultsca_CA
dc.description.sponsorShipThe research supported in part by the Spanish Ministry of Education and Science and Bancaja foundation through grants MTM2010-14961 and P11B2008-27. C. Comas was supported during 2009-2010 by a "Juan de la Cierva" contract from the Spanish Government.ca_CA
dc.format.extent17 p.ca_CA
dc.format.mimetypeapplication/pdfca_CA
dc.language.isoengca_CA
dc.publisherWileyca_CA
dc.relation.isPartOfBiometrical Journal (2011), v. 53, issue 6ca_CA
dc.rights.urihttp://rightsstatements.org/vocab/CNE/1.0/*
dc.subjectForest inventoriesca_CA
dc.subjectHomogeneous point processesca_CA
dc.subjectSample variance and covarianceca_CA
dc.subjectShape and size of sample subplotsca_CA
dc.subjectSpatially explicit sample designsca_CA
dc.titleOn tree intensity estimation for forest inventories: Some statistical issuesca_CA
dc.typeinfo:eu-repo/semantics/articleca_CA
dc.identifier.doihttp://dx.doi.org/10.1002/bimj.201000193
dc.rights.accessRightsinfo:eu-repo/semantics/restrictedAccessca_CA
dc.relation.publisherVersionhttp://onlinelibrary.wiley.com/doi/10.1002/bimj.201000193/fullca_CA
dc.type.versioninfo:eu-repo/semantics/publishedVersion


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