DIGITALNA ARHIVA ŠUMARSKOG LISTA
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Summary
Although the application of aerial stereo photogrammetry in forest inventory has a long tradition, in many countries including Croatia forest inventories are based on labour and time consuming field surveys. Therefore, the objective of this research was to evaluate the applicability of using the digital aerial images of high spatial resolution (ground sampling distance – GSD of 10 cm and 30 cm) for predicting forest stand attributes (basal-area weighted mean dbh – DBHg, Lorey’s mean height – HL, stand density – N, basal area – G, volume – V). This research continues the work of the previous research (Balenović et al. 2013, 2015a), where accuracy of photogrammetrically estimated arithmetic mean diameter and arithmetic mean height of forest stands were evaluated.
The research was conducted in the even-aged (sessile oak management class) and the multi-aged stands (European beech and common hornbeam management classes) of a privately owned forest in the management unit Donja Kupčina – Pisarovina, 25 km south of Zagreb, Croatia (Figure 1). Field data were collected during the spring and summer of 2009 as part of the regular forest inventory conducted according to the valid Regulation on Forest Management. A total of 183 circular plots with radii of 8 or 12 m were systematically set in