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首页> 外文期刊>South-East European Forestry >Spatial and Temporal Growth Variation of Pinus heldreichii Christ. Growing along a Latitudinal Gradient in Kosovo and Albania
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Spatial and Temporal Growth Variation of Pinus heldreichii Christ. Growing along a Latitudinal Gradient in Kosovo and Albania

机译：樟子松基督的时空增长变化。沿着科索沃和阿尔巴尼亚的纬度梯度生长

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Background and Purpose: Trees growing at high elevations are particularly sensitive to climate variability. In this study, tree-ring chronologies of Pinus heldreichii Christ. have been developed to examine their dynamism along a 350 km latitudinal gradient. Materials and Methods: Sampling was conducted in 6 high elevation sites along a latitudinal gradient from Kosovo and Albania. Two opposite cores from 148 healthy and dominant P. heldreichii trees were taken using an increment borer. The cores were mounted and sanded, and after a rigorous cross-dating, the ring widths were measured to a resolution of 0.01 mm using the LINTAB 6 measuring device. The ARSTAN program was used for tree-ring series detrending and site chronologies’ development. The relationship between radial growth and climate, as well as between temporal patterns of P. heldreichii growth were investigated using simple correlation analysis and principal component analysis (PCA) over the common period 1951-2013. Results: Radial growth variability of Bosnian pine increased with latitude and elevation. Significant correlations among our chronologies and others from neighbouring countries indicated that our chronologies possess a good regional climatic signal. P. heldreichii growth at all sampling sites was significantly influenced by seasonal and mean annual temperatures, as well as by the July drought. Thus, temperature was the main driving force of species growth, showing a larger control at spatial scale than precipitation. The difference in species growth patterns along the latitudinal gradient is implicated by the common action of climatic and non-climatic factors (age and human activity). With continued warming and precipitation decrease during the second half of the 20th century, P. heldreichii growth from these high elevation sites resulted in being more sensitive to drought. This climatic signal is assumed to be stronger in the future due to climate change. Conclusions: P. heldreichii chronologies developed in our study possess a good local and regional climatic signal. Temperature was the main driving force of P. heldreichii growing in these high elevations sites. The reduction of P. heldreichii growth during the second half of the 20th century due to temperature rise and rainfall decrease imposes the necessity to continue investigations? on potential impacts of climate warming on species growing near the tree-line.
机译：背景和目的：高海拔地区生长的树木对气候变化特别敏感。在这项研究中，松树树年年表基督。已经开发出可以在350 km的纬度梯度上检查它们的动力。材料和方法：沿科索沃和阿尔巴尼亚的纬度梯度在6个高海拔地点进行采样。使用增量钻取自148棵健康的和占优势的P.holdreichii树的两个相反的核心。将芯安装并打磨，并在严格的交日期之后，使用LINTAB 6测量设备将环的宽度测量为0.01毫米的分辨率。 ARSTAN程序用于树木年轮系列的去趋势和站点年表的开发。使用简单相关分析和主成分分析（PCA），研究了1951-2013年共同时期径向生长与气候之间的关系以及持球菌生长的时间模式之间的关系。结果：波斯尼亚松的径向生长变异性随纬度和海拔的升高而增加。我们的时间序列与邻近国家的时间序列之间的显着相关性表明，我们的时间序列具有良好的区域气候信号。在所有采样点，P。holdreichii的生长受到季节和年平均温度以及7月干旱的影响。因此，温度是物种生长的主要驱动力，在空间尺度上显示出比降水更大的控制。气候和非气候因素（年龄和人类活动）的共同作用牵涉沿纬度梯度的物种生长方式的差异。随着20世纪下半叶持续的变暖和降水减少，这些高海拔地区的体育假单胞菌生长导致对干旱更加敏感。假定由于气候变化，该气候信号将来会更强。结论：在我们的研究中发展的P. holdreichii年表具有良好的本地和区域气候信号。温度是在这些高海拔地区生长的P.holdreichii的主要驱动力。在20世纪下半叶，由于温度上升和降雨减少而导致体育对虾的生长减少，因此有必要继续进行调查吗？气候变暖对林线附近生长物种的潜在影响。

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