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A likelihood-based time series modeling approach for application in dendrochronology to examine the growth-climate relations and forest disturbance history

机译:基于似然度的时间序列建模方法在树轮年代学中的应用以检查生长-气候关系和森林扰动历史

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摘要

A time series intervention analysis (TSIA) of dendrochronological data to infer the tree growth-climate-disturbance relations and forest disturbance history is described. Maximum likelihood is used to estimate the parameters of a structural time series model with components for climate and forest disturbances (i.e., pests, diseases, fire). The statistical method is illustrated with a tree-ring width time series for a mature closed-canopy Douglas-fir stand on the west slopes of the Cascade Mountains of Oregon, USA that is impacted by Swiss needle cast disease caused by the foliar fungus, Phaecryptopus gaeumannii (Rhode) Petrak. The likelihood-based TSIA method is proposed for the field of dendrochronology to understand the interaction of temperature, water, and forest disturbances that are important in forest ecology and climate change studies.
机译:描述了树木年代学数据的时间序列干预分析(TSIA),以推断树木的生长-气候-干扰关系和森林干扰历史。使用最大似然来估计结构时间序列模型的参数,该模型具有气候和森林干扰(例如,虫害,疾病,火灾)的成分。统计方法以树轮宽度时间序列举例说明,该树形宽度序列位于美国俄勒冈州喀斯喀特山脉西坡的成熟封闭冠层道格拉斯冷杉林地上,受到了由叶真菌Phaecryptopus引起的瑞士针叶病的影响gaeumannii(罗德)佩特拉克。在树轮年代学领域,提出了基于似然的TSIA方法,以了解温度,水和森林干扰的相互作用,这在森林生态学和气候变化研究中很重要。

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