Sensitivity of Three Dominant Tree Species from the Upper Boundary of Their Forest Type to Climate Change at Changbai Mountain, Northeastern China
Sensitivity of Three Dominant Tree Species from the Upper Boundary of Their Forest Type to Climate Change at Changbai Mountain, Northeastern China
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DOI：
10.3959/1536-1098-74.1.39
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发表时间：
2018-02
影响因子：
1.6
通讯作者：
Lushuang Gao;Yun Zhang;Xiaoming Wang;Chunyu Zhang;Yihan Zhao;Lanmei Liu
中科院分区：
文献类型：
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作者：
Lushuang Gao;Yun Zhang;Xiaoming Wang;Chunyu Zhang;Yihan Zhao;Lanmei Liu
摘要 我们量化了长白山主要树种的生长动态和气候响应：红松 (Pinus koraiensis)、红云杉 (Picea jezoensis) 和白桦 (Betula ermanii)。标准化曲线和移动相关性分别用于评估生长率趋势并分析森林上部边界和单个物种海拔限制的树木生长与气候关系的变化。在每个森林上部边界和特定物种海拔上限的树木之间观察到了对比的生长模式。红松和云杉在其森林上部边界的生长速度比其个体物种极限的生长速度要快。埃尔曼桦在其森林上界的较高生长率只发生在1960年之前。相对于温度对个别海拔上限的树木生长的强烈影响，在森林上界观察到降水的稳定效应和温度对树木生长的影响。自 1980 年以来，气温升高对红松和埃尔曼桦产生了显着的负面影响，而气温升高则与云杉的生长有关。这项研究阐明了这些物种在森林上部边界和海拔限制之间的差异生长模式和气候生长关系的时间变化。
Abstract We quantified the growth dynamics and climatic responses of three tree species that have dominated Changbai Mountain: Korean pine (Pinus koraiensis), Yeddo spruce (Picea jezoensis), and Erman's birch (Betula ermanii). Standardization curves and moving correlations were used to assess growth rate trends and analyze changes in growth-climate relationships of trees at their upper forest boundaries and individual species elevation limits, respectively. Contrasting growth patterns were observed between trees at each upper forest boundary and species-specific upper elevation limits. Korean pines and Yeddo spruces grew faster at their upper forest boundaries than at their individual species limits. A higher growth rate of Erman's birches at their forest upper boundary only occurred before 1960. Relative to the strong effect of temperature on tree growth at individual upper elevation limits, the stable effect of precipitation and changing effect of temperature on tree growth were observed at the upper forest boundaries. Temperature increases have had a significantly negative effect on Korean pine and Erman's birch since 1980, whereas temperature increases were associated with Yeddo spruce growth. This study elucidated the differential growth patterns and temporal changes in climate–growth relationships of these species between their upper forest boundaries and elevation limits.