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dc.contributor.authorHe, Y.
dc.contributor.authorGuo, X.
dc.contributor.authorSi, B.C.
dc.date.accessioned2018-08-06T05:17:32Z
dc.date.available2018-08-06T05:17:32Z
dc.date.issued2005-02-17
dc.identifier.urihttp://hdl.handle.net/10388/9491
dc.description.abstractDetermining and monitoring ecosystem heterogeneity and biodiversity is important for grassland management and can be carried out through remote sensing such as satellite images. However, in rolling landscapes, biophysical properties of ecosystems, the indicators of heterogeneity and biodiversity are highly scale and location dependent and little research is reported on how topography affects biophysical properties of ecosystems quantitatively. The objective of this study is to examine how topography affects spatial biophysical variation using statistics and a wavelet approach in the mixed grassland ecosystem, Saskatchewan, Canada. Field leaf area index (LAI) was collected with an LAI-2000 instrument and topographical data were measured using a total station along five paralleled transects. Results showed that biophysical spatial variation is highly topography-controlled, and the wavelet approaches can be used to identify the spatial heterogeneity of a grassland ecosystem at different scales. This study suggests the potentials of using readily-available topography data to guide the ecosystems management and selection of the resolution of satellite images.en_US
dc.language.isoenen_US
dc.relation.ispartofSoils and Crops Workshop
dc.rightsAttribution-NonCommercial-NoDerivs 2.5 Canada*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/2.5/ca/*
dc.subjectleaf area index (LAI)en_US
dc.subjecttopographic indicesen_US
dc.subjectwavelet approachen_US
dc.titleTopography affects grassland heterogeneityen_US
dc.typePresentationen_US
dc.description.versionNon-Peer Reviewed


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Attribution-NonCommercial-NoDerivs 2.5 Canada
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 2.5 Canada