Improved models of harvest-induced bark damageAnnals of Forest Science - Tập 73 - Trang 233-246 - 2015
Aikaterini Nakou, Udo Hans Sauter, Ulrich Kohnle
We provided a precise quantitative analysis of the factors at the origin of bark damage during harvesting operations and developed a model able to predict them accurately. The major factors were the distance of trees to skid trails, the intensity of removals, the harvesting system as well as the interactions between the distance of trees to skid trails with harvesting systems, t...... hiện toàn bộ
Radial growth changes following hemlock woolly adelgid infestation of eastern hemlockAnnals of Forest Science - Tập 71 - Trang 595-602 - 2014
David M. Walker, Carolyn A. Copenheaver, Audrey Zink-Sharp
Hemlock woolly adelgid (Adelges tsugae) is an invasive insect that is defoliating and killing eastern hemlock (Tsuga canadensis) in the USA. We quantified changes in tree-ring growth rates and wood anatomy for living trees infested with hemlock woolly adelgid across six sites from Massachusetts (42°41′N) to Georgia (34°53′N) to identify growth responses of eastern hemlock that had survived infesta...... hiện toàn bộ
Effects of rotation length on the grade recovery and wood properties of Sitka spruce structural timber grown in Great BritainAnnals of Forest Science - Tập 69 - Trang 353-362 - 2011
John R. Moore, Andrew J. Lyon, Stefan Lehneke
Rotation length is known to affect timber quality in many plantation species, but its effect on the properties of Sitka spruce (Picea sitchensis) structural timber has not been quantified. Te purpose of this study was to compare selected wood properties and grade recovery of Sitka spruce structural timber cut from different radial positions within a log reflecting different cambial ages. Structura...... hiện toàn bộ
Post-fire resprouting ability of 15 non-dominant shrub and tree species in Mediterranean areas of NE SpainAnnals of Forest Science - Tập 64 - Trang 883-890 - 2007
Lidia Quevedo, Anselm Rodrigo, Josep Maria Espelta
Post-fire resprouting ability of the non-dominant tree and shrub species of the Mediterranean Basin has not yet been experimentally tested, although this group contributes to maintain the richness of Mediterranean plant communities. In this study, we have analyzed the post-fire recovery ability of 15 woody species that occur in relatively low abundance in dry and sub humid Mediterranean areas in N...... hiện toàn bộ
Steep slopes promote downhill dispersal of Quercus crispula seeds and weaken the fine-scale genetic structure of seedling populationsAnnals of Forest Science - Tập 64 - Trang 405-412 - 2007
Takafumi Ohsawa, Yoshiaki Tsuda, Yoko Saito, Haruo Sawada, Yuji Lde
The seed dispersal patterns and genetic structure of plant populations in mountainous forests may differ from those on flat sites, because some seeds that fall from adults are likely to roll downhill, and thus cause the seed shadows from different mother trees to merge. In the study reported here we used six polymorphic microsatellite markers to track seed dispersal and examine the fine-scale spat...... hiện toàn bộ
The effects of temporal differences between map and ground data on map-assisted estimates of forest area and biomassAnnals of Forest Science - Tập 73 - Trang 839-847 - 2015
Ronald E. McRoberts, Erik Næsset, Terje Gobakken
When areas of interest experience little change, remote sensing-based maps whose dates deviate from ground data can still substantially enhance precision. However, when change is substantial, deviations in dates reduce the utility of such maps for this purpose.
Remote sensing-based maps are well-established as means of increasing the precision of estimates of fo...... hiện toàn bộ