No evidence of recent (1995–2013) decrease of yellow-cedar in Alaska
No evidence of recent (1995–2013) decrease of yellow-cedar in Alaska
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没有证据表明最近（1995-2013 年）阿拉斯加黄雪松数量减少
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
R. Pattison
中科院分区：
文献类型：
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作者：
T. Barrett;R. Pattison
预计气候变化将影响全球的森林和黄杉（Callitropsis nootkatensis (D. Don) Oerst）。（p . Little）的下降被用来作为气候变化如何影响树种的一个例子。然而，大多数先前的研究并没有将黄杉的衰退置于黄杉整体的背景下。我们使用2004-2013年阿拉斯加温带雨林（671个黄杉样地）的区域清单来估计当前属性，并使用564个重新测量样地（建立于1995-1998年）的子集来估计最近的变化。结果表明，近年来（1995-1998年至2004-2013年），在未受管理的森林中，黄杉活树基材面积呈增加趋势，95%可信区间为每10年增加0.3% ~ 3.3%；黄杉的死亡率相对较低，每年的死亡率为0.41%。对活树与树干比率的分析与1995年以前黄杉死亡率升高的情况一致，但也表明范围几乎没有缩小。庞大的数字和广泛的……
Climate change is expected to impact forests worldwide, and yellow-cedar (Callitropsis nootkatensis (D. Don) Oerst. ex D.P. Little) decline has been used as an example of how changing climate can impact a tree species. However, most previous research has not placed yellow-cedar decline within the context of yellow-cedar overall. We used a 2004–2013 regional inventory of the temperate rainforest of Alaska (671 plots with yellow-cedar) to estimate current attributes and a subset of 564 remeasured plots (established 1995–1998) to estimate recent change. Results show that in unmanaged forests, yellow-cedar live tree basal area recently (1995–1998 to 2004–2013) increased, with a 95% confidence interval of a 0.3% to 3.3% increase per decade. Yellow-cedar has a relatively low mortality rate, 0.41% of trees per year. An analysis of live tree to snag ratios was consistent with elevated mortality of yellow-cedar prior to 1995 but also indicated that little range contraction had occurred. The large numbers and wide ...