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On tree intensity estimation for forest inventories: Some statistical issues
dc.contributor.author | Comas Rodríguez, Carlos | |
dc.contributor.author | Mateu, Jorge | |
dc.contributor.author | Delicado, Pedro | |
dc.date.accessioned | 2017-04-19T07:10:36Z | |
dc.date.available | 2017-04-19T07:10:36Z | |
dc.date.issued | 2011-11 | |
dc.identifier.citation | COMAS RODRÍGUEZ, Carlos; MATEU, Jorge; DELICADO, Pedro. On tree intensity estimation for forest inventories: Some statistical issues. Biometrical Journal (2011), v. 53, issue 6, pp. 994-1010 | ca_CA |
dc.identifier.uri | http://hdl.handle.net/10234/167237 | |
dc.description.abstract | The 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 results | ca_CA |
dc.description.sponsorShip | The 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.extent | 17 p. | ca_CA |
dc.format.mimetype | application/pdf | ca_CA |
dc.language.iso | eng | ca_CA |
dc.publisher | Wiley | ca_CA |
dc.relation.isPartOf | Biometrical Journal (2011), v. 53, issue 6 | ca_CA |
dc.rights.uri | http://rightsstatements.org/vocab/CNE/1.0/ | * |
dc.subject | Forest inventories | ca_CA |
dc.subject | Homogeneous point processes | ca_CA |
dc.subject | Sample variance and covariance | ca_CA |
dc.subject | Shape and size of sample subplots | ca_CA |
dc.subject | Spatially explicit sample designs | ca_CA |
dc.title | On tree intensity estimation for forest inventories: Some statistical issues | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | http://dx.doi.org/10.1002/bimj.201000193 | |
dc.rights.accessRights | info:eu-repo/semantics/restrictedAccess | ca_CA |
dc.relation.publisherVersion | http://onlinelibrary.wiley.com/doi/10.1002/bimj.201000193/full | ca_CA |
dc.type.version | info:eu-repo/semantics/publishedVersion |
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