Some comments on design-based line-intersect sampling with segmented transects |
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Authors: | Lucio Barabesi |
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Institution: | (1) Dipartimento di Metodi Quantitativi, Università di Siena, P.zza S.Francesco 17, Siena, 53100, Italy |
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Abstract: | Line-intersect sampling based on segmented transects is adopted in many forest inventories to quantify important ecological
indicators such as coarse woody debris attributes. By assuming a design-based approach, Affleck, Gregoire and Valentine (2005,
Environ Ecol Stat 12:139–154) have recently proposed a sampling protocol for this line-intersect setting and have suggested
an estimation method based on linear homogeneous estimators. However, their proposal does not encompass the estimation procedure
currently adopted in some national forest inventories. Hence, the present paper aims to introduce a unifying perspective for
both methods. Moreover, it is shown that the two procedures give rise to coincident estimators for almost all the usual field
applications. Finally, some strategies for efficient segmented-transect replications are considered.
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Keywords: | Inclusion region Linear homogeneous estimator Replicated design Monte Carlo integration |
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