Solar radiation transmission in and around canopy gaps in an uneven-aged nothofagus betuloides forest

INTERNATIONAL JOURNAL OF BIOMETEOROLOGY (PRINT);
Int. J. Biometeorol.

dc.creatorCRUZ-MADARIAGA, GUSTAVO
dc.creatorPROMIS-BAEZA, ALVARO
dc.creatorSCHINDLER, DIRK
dc.date2017-04-27T18:52:42Z
dc.date2022-07-07T02:24:37Z
dc.date2017-04-27T18:52:42Z
dc.date2022-07-07T02:24:37Z
dc.date2009
dc.date.accessioned2023-08-22T02:56:55Z
dc.date.available2023-08-22T02:56:55Z
dc.identifier0
dc.identifierD02I1080
dc.identifierD02I1080
dc.identifierWOS:000268785700006
dc.identifier0020-7128
dc.identifierhttps://hdl.handle.net/10533/197739
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8312705
dc.descriptionThe transmission of direct, diffuse and global solar radiation in and around canopy gaps occurring in an uneven-aged, evergreen Nothofagus betuloides forest during the growing season (October 2006-March 2007) was estimated by means of hemispherical photographs. The transmission of solar radiation into the forest was affected not only by a high level of horizontal and vertical heterogeneity of the forest canopy, but also by low angles of the sun's path. The below-canopy direct solar radiation appeared to be variable in space and time. On average, the highest amount of transmitted direct solar radiation was estimated below the undisturbed canopy at the southeast of the gap centre. The transmitted diffuse and global solar radiation above the forest floor exhibited lower variability and, on average, both were higher at the centre of the canopy gaps. Canopy structure and stand parameters were also measured to explain the variation in the below-canopy solar radiation in the forest. The model that best fit the transmitted below-canopy direct solar radiation was a growth model, using plant area index with an ellipsoidal angle distribution as the independent variable (R (2) = 0.263). Both diffuse and global solar radiation were very sensitive to canopy openness, and for both cases a quadratic model provided the best fit for these data (R (2) = 0.963 and 0.833, respectively). As much as 75% and 73% of the variation in the diffuse and global solar radiation, respectively, were explained by a combination of stand parameters, namely basal area, crown projection, crown volume, stem volume, and average equivalent crown radius.
dc.descriptionThe authors gratefully acknowledge the Chilean Project FONDEF D02I1080, the German Academic Exchange Service ( DAAD), and the International 'Forestry in Transition' Ph. D. Programme of the Faculty of Forest and Environmental Sciences of the University of Freiburg. We are also grateful to the Programa de Bosques Patagonicos of the University of Chile and the field work support provided by the Wildlife Conservation Society in Chile (WCS). The authors would like to extend their gratitude to Mr. Joaquin Soto, owner of the forest in the Rio Condor (Tierra del Fuego, Chile). We also thank D. Butler-Manning for comments and proofreading the paper.
dc.description5
dc.descriptionFONDEF
dc.descriptionalvaro.promis@gmail.com
dc.descriptionChilean Project FONDEF [D02I1080]; German Academic Exchange Service ( DAAD); International 'Forestry in Transition' Ph. D. Programme of the Faculty of Forest and Environmental Sciences of the University of Freiburg
dc.description4
dc.descriptionFONDEF
dc.description53
dc.languageENG
dc.publisherSPRINGER
dc.relationinstname: Conicyt
dc.relationreponame: Repositorio Digital RI2.0
dc.relationinstname: Conicyt
dc.relationreponame: Repositorio Digital RI2.0
dc.relationinfo:eu-repo/grantAgreement/Fondef/D02I1080
dc.relationinfo:eu-repo/semantics/dataset/hdl.handle.net/10533/93477
dc.relationhttps://doi.org/10.1007/s00484-009-0222-7
dc.rightsinfo:eu-repo/semantics/openAccess
dc.titleSolar radiation transmission in and around canopy gaps in an uneven-aged nothofagus betuloides forest
dc.titleINTERNATIONAL JOURNAL OF BIOMETEOROLOGY (PRINT)
dc.titleInt. J. Biometeorol.
dc.typeArticulo
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.coverageNEW YORK


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