Estimation of the spatial covariance in Universal Kriging: Application to forest inventory |
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Authors: | Mandallaz Daniel |
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Institution: | (1) Forest Inventory and Planning, ETH Zu¨rich, CH-8092 Zu¨rich, Switzerland |
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Abstract: | This paper presents a simple least squares procedure for estimating the spatial covariance and compares it with the numerically more difficult restricted maximum likelihood procedure. Thereafter, it compares design-based and kriging techniques for the estimation of spatial averages in the context of double sampling, as used in forest inventory, where terrestrial sample plots are combined with auxiliary information based on aerial photographs. A case study illustrates the theory. |
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Keywords: | least squares restricted maximum likelihood Kriging two-phase two-stage sampling |
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