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首页> 外文期刊>Climatic Change >Scots Pine Growth Trends in Northwestern Kola Peninsula as an Indicator of Positive Changes in the Carbon Cycle
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Scots Pine Growth Trends in Northwestern Kola Peninsula as an Indicator of Positive Changes in the Carbon Cycle

机译：可乐半岛西北部的苏格兰松树生长趋势，可作为碳循环正向变化的指标

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摘要

Growth trends of Scots pine (Pinus sylvestris) at its northernmost extent may be an indicator of changes in the carbon cycle of terrestrial forest ecosystems. Using a method which removed age trends from the data, a time-series analysis of annual radial increment in wood over the last few decades compared with the period of the last registered warming (maximum around 1930–40), revealed elevated growth of 78% for trees 0–20 years old, 56% for trees 21–40 years old, 21% for trees 41–60 years old, and 10% for trees more than 101 years old. Increments of trees in the61–80 and 81–100 years old age classes from the two periods were similar. The higher rate of growth in recent times occurred despite a decrease in temperature after about 1940 and significant air pollution. During the last century growth of Scots pine increased for trees in all age groups, except for trees in the 81–100 year old age class for which it was constant. The average rates of growth were estimated at 0.016 mm/year for trees in the 0–20 year age class, 0.012 mm/year for the 21–40 year age class, 0.005 mm/year for the 41–60 year age class, 0.008 mm/year for the 61–80 year age class and 0.006 mm/year for trees in the greater than 101 year age class. The growth trends were unstable over time and took place concurrent with increasing oscillations in radial increment. The most probable reasons for the marked increase in radial increment growth of Scots pine in this region are climate warming and higher levels of carbon dioxide. Together these may produce a synergistic effect on growth.
机译：樟子松（Pinus sylvestris）在最北端的生长趋势可能是陆地森林生态系统碳循环变化的指标。使用一种从数据中去除年龄趋势的方法，对过去几十年中木材的年径向增量与上一次记录的变暖时期（最大值为1930–40年）相比进行时间序列分析，结果表明增长了78％对于0–20岁的树木，56％对于21–40岁的树木，21％对于41–60岁的树木，10％大于101岁的树木。在这两个时期，年龄在61至80岁和81至100岁的树木的增幅相似。尽管在1940年后温度下降和严重的空气污染，但近几年仍出现了较高的增长率。在上个世纪，苏格兰松树的生长在所有年龄组的树木中均增加了，但在81至100岁年龄段中的树木却保持不变。 0-20岁年龄组树木的平均生长速度估计为0.016 mm /年，21-40岁年龄组树木为0.012 mm /年，41-60岁年龄组树木为0.005 mm /年，0.008 61-80岁年龄段的毫米/年，大于101岁年龄段的树木的0.006 mm /年。随着时间的流逝，生长趋势不稳定，并与径向增量的振荡同时发生。该地区苏格兰松的径向增量增长显着增加的最可能原因是气候变暖和二氧化碳含量较高。这些一起可能对生长产生协同作用。

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  • 来源
    《Climatic Change》 |2002年第2期|183-196|共14页
  • 作者

    Alexander S. Alekseev; Alesya R. Soroka;

  • 作者单位

    Faculty of Forestry Dept. of Forest Inventory Management and GIS Saint-Petersburg State Forest Technical Academy;

    Faculty of Forestry Dept. of Forest Inventory Management and GIS Saint-Petersburg State Forest Technical Academy;

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