Gap formation and susceptible Abies trees to windthrow in the forests of Odaesan National Park

Abstract

Extremely strong winds and heavy rainfall caused canopy gaps in a mixed Abies holophylla broadleaf forest and a Quercus mongolica-dominated forest in Odaesan National Park, Korea in October 2006. The impact of the combination of strong winds and torrential rain on the development of forest gaps and canopy structures were investigated. The mean size of newly created gaps were 205 m 2 in the mixed forest and 86 m 2 in the Quercus forest, and were created by 2.8 and 1.4 gapmaker trees, respectively. Among the 73 trees lost in the mixed forest, 59% succumbed because of direct wind damage while 41% were struck by neighboring trees that fell into them. Most of these trees downed by wind were uprooted (74%), while the trees downed by neighboring tree falls snapped (78%). 21 trees in the Quercus forest died from direct wind damage, and 57% of them were uprooted. Although the relative density of Abies nephrolepis and A. holophylla represented only 0.2% and 6.4%, respectively, of all species in the intact mixed forest, they accounted for 27% and 15%, respectively, of all trees affected by wind on that site. In fact, 85% of the total A. nephrolepis and 91% of the total A. holophylla in the mixed forest fell directly due to strong wind. By contrast, only one Abies species, A. nephrolepis, was found in the Quercusdominated forest, and it accounted for 7.3% of the species composition. These findings suggest that A. nephrolepis and A. holophylla are particularly susceptible to high winds because of their great heights and shallow root systems.

Topoğrafya ve Meşcere Yapısının Rüzgâr Devriği Zararlarına Etkisinin Araştırılması: Düzce Orman İşletme Müdürlüğü Örneği

“…Addition, it was indicated that previous studies have indicated that the risk of windthrow damaged typically increases with tree age and younger stands with shorter and more flexible trees tend to be less susceptible to windthrow (Atay, 1987;Moore, 2000). Nevertheless, in shallowrooted species, particularly in areas with high storm intensity and poor soil structure, windthrow damage can be more prevalent than expected (Jeon et al, 2015).…”

Synergistic Effect of Dwarf Bamboo Flowering and Wild Boar Rooting on Forest Regeneration

“…Rooted traces by wild boar was very frequently found, suggesting an important role in the dynamics of the forest floor [52]. This would be somewhat similar to how the numerous pits formed by windblown function as microsites for seed germination and establishment [58][59][60]. The food source of wild boars varies according to season.…”

A Bibliometric Analysis of Forest Gap Research during 1980–2021

“…The secondary keyword in terms of burst strength is "impact". Some articles have discussed the impact of forest gaps on the community in gaps [7], and others have discussed the impact of disturbance on gap formation [61]. The third keyword in terms of burst strength is "mortality."…”