Detection and removal of disturbance trends in tree-ring series for dendroclimatology
Detection and removal of disturbance trends in tree-ring series for dendroclimatology
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DOI：
10.1139/cjfr-2015-0366
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发表时间：
2016-03
影响因子：
2.2
通讯作者：
M. Rydval;D. Druckenbrod;K. Anchukaitis;R. Wilson
中科院分区：
文献类型：
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作者：
M. Rydval;D. Druckenbrod;K. Anchukaitis;R. Wilson
非气候干扰事件是森林历史的一个组成部分。虽然确定这些事件的发生和持续时间可能有助于了解环境历史和景观变化，但从树木气候的角度来看，干扰可能会掩盖树木年轮中的气候信号。然而，现有的去趋势方法无法在不影响长期气候趋势保持的情况下消除干扰趋势。在这里，我们解决这个问题，通过使用一种新的方法来检测和去除干扰事件的树轮宽度数据，以评估其时空发生在苏格兰松（樟子松L.）来自苏格兰的树木干扰趋势“叠加”在树轮记录删除前去趋势和气候信号的校正前和校正后年表进行评估，使用区域气候数据，代理系统模型模拟，最大晚材密度（MXD）数据。分析次区域年表从.
Nonclimatic disturbance events are an integral element in the history of forests. Although the identification of the occurrence and duration of such events may help to understand environmental history and landscape change, from a dendroclimatic perspective, disturbance can obscure the climate signal in tree rings. However, existing detrending methods are unable to remove disturbance trends without affecting the retention of long-term climate trends. Here, we address this issue by using a novel method for the detection and removal of disturbance events in tree-ring width data to assess their spatiotemporal occurrence in a network of Scots pine (Pinus sylvestris L.) trees from Scotland. Disturbance trends “superimposed” on the tree-ring record are removed before detrending and the climate signals in the precorrection and postcorrection chronologies are evaluated using regional climate data, proxy system model simulations, and maximum latewood density (MXD) data. Analysis of subregional chronologies from the...