Individual-level analysis of damage to residual trees after single-tree selection harvesting in northern Japanese mixedwood stands
Individual-level analysis of damage to residual trees after single-tree selection harvesting in northern Japanese mixedwood stands
复制标题
日本北部混交林单树选择采伐后残留树木受损的个体水平分析
DOI：
10.1007/s10310-013-0418-x
复制
发表时间：
2014
影响因子：
1.5
通讯作者：
Nakagawa Y.
中科院分区：
文献类型：
--
作者：
Tatsumi S.;Owari T.;Kasahara H.;Nakagawa Y.
量化单树选择性采伐造成的树木损害和死亡率对于了解采后森林动态和管理至关重要。在这项研究中，我们量化的影响，树木的大小和种类和距离从残留树木砍伐树木和滑道上的残留树木的损害和死亡率的混合北海道，北方日本。在我们研究的4,961棵树中，373棵（7.5%）受损，其中148棵（3.0%）在伐木过程中或伐木后立即死亡。分层贝叶斯模型表明，剩余树木的损害的风险增加，随着砍伐树木的大小和接近砍伐树木和防滑痕迹。较小的残留树木有最大的破坏风险。不同的物种在他们的敏感性损害;冷杉sachalinensis（Fr. Schm.）Masters和云杉Picea jezoensis（Sieb.等Zucc。）卡尔。在我们的取样地中是最容易感染的物种。受损较小的树木死亡风险最高。在伐木时没有死亡的受损树木比未受损树木有更高的采后死亡风险。研究结果表明，为最大限度地减少采伐引起的损失和死亡率：（1）应优化和固定滑道的空间布置;（2）在标记采伐树木和选择采伐方向之前，应考虑滑道损害的风险;（3）应指导采伐作业人员避免损害小树，尤其是最易受损害的树种。
Quantifying tree damage and mortality caused by single-tree selection harvesting is critical to understanding postharvest forest dynamics and management. In this study, we quantified the effects of tree size and species and the distance from residual trees to felled trees and skid trails on damage to residual trees and mortality in mixed coniferous–broadleaved stands of Hokkaido, northern Japan. Among the 4,961 trees that we studied, 373 (7.5 %) were damaged, and 148 of these trees (3.0 %) died during or immediately after logging. Hierarchical Bayesian modeling showed that the risk of damage to residual trees increased with increasing size of the felled trees and with increasing proximity to felled trees and skid trails. Smaller residual trees had the greatest risk of damage. Species differed in their susceptibility to damage;Abies sachalinensis(Fr. Schm.) Masters andPicea jezoensis(Sieb. et Zucc.) Carr. were the most susceptible species in our sample plots. Smaller damaged trees had the highest risk of mortality. The damaged trees that did not die at the time of logging had a higher risk of postharvest mortality than undamaged trees. Our results indicate that, to minimize logging-induced damage and mortality: (1) the spatial arrangement of skid trails should be optimized and fixed, (2) the risk of skidding damage should be considered before marking the trees to be harvested and choosing the felling direction, and (3) logging operators should be instructed to avoid damaging small trees, especially those of the species that are most susceptible to damage.