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首页> 外文期刊>Ecological research >Allometric and growth data of an evergreen oak, Quercus glauca, in a secondary broadleaved forest
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Allometric and growth data of an evergreen oak, Quercus glauca, in a secondary broadleaved forest

机译：次生阔叶林中常绿栎木栎的异速生长和生长数据

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摘要

The evergreen oak Quercus glauca often dominates secondary broadleaved forests in Western Japan. It is regarded as a mid-successional species, whose diameter and height growth fall between those of early- and late-successional species. Despite the ecological importance of this evergreen oak in the secondary succession of the evergreen broadleaved forest zone in Japan, tree-felling data that allow estimations of tree mass and leaf area from non-destructive measurements are lacking. This paper provides stem growth data, read from tree rings on disks sampled from 13 Q. glauca stems, and their allometric data. The samples were collected in 1994 from the Ginkakuji-san National Forest, Kyoto City, Japan. Allometric data comprised data on stem age, diameter at breast height, diameter at 10% height, tree height, height of the lowest living branch, height of the lowest living leaf in the crown, volume of the main stem, squared stem diameter just below the lowest living branch, total leaf area of the stem, dry weight of the total leaves, dry weight of all branches, dry weight of the main stem, total aboveground dry weight, mean relative photosynthetic photon flux density (PPFD) above the crown, mean relative PPFD below the crown, crown projection area, and specific leaf area. These data can be helpful for estimating the biomass and leaf area index of a Q. glauca stand by enabling the derivation of allometric relationships between non-destructive measurements (such as stem diameter at breast height, and tree height) and tree mass or leaf area. Diameters (including bark thickness) at ground height and above (at 0.5- or 1-m intervals) for each stem are also provided. Stem growth data were based on tree-ring reads from disks taken from heights of 0.0 and 0.3 m, and at 0.5-m (stem height < 7 m) or 1.0-m (stem height ae7 m) intervals above that. Stem volume growth derived from these tree-ring data can be converted into stem mass growth if combined with an analysis of the allometric data, which may serve as a useful resource for the estimation of carbon fixation by evergreen oaks in relation to global climate change.
机译：常绿的栎栎通常在日本西部的次生阔叶林中占主导地位。它被视为中等成功种，其直径和高度增长介于早期和晚期成功种之间。尽管这种常绿橡树在日本常绿阔叶林带的次生演替中具有生态重要性，但仍缺乏树木砍伐数据，该数据无法通过非破坏性测量来估算树木的质量和叶面积。本文提供了从13个Q.glauca茎采样的磁盘上的年轮读取的茎生长数据及其异速生长数据。样品于1994年从日本京都市银阁寺山国家森林中采集。异速测量数据包括有关茎龄，胸径的直径，10％身高的直径，树的高度，最低活枝的高度，冠中最低活叶片的高度，主茎的体积，刚好在其以下的平方直径的数据最低的活枝，茎的总叶面积，总叶的干重，所有分支的干重，主茎的干重，地上总干重，树冠上方的平均相对光合光子通量密度（PPFD），冠下方的平均相对PPFD，冠的投影面积和比叶面积。这些数据可通过推导无损测量值（例如胸高处的茎径和树高）与树木质量或叶面积之间的异形关系来推论青冈林的生物量和叶面积指数。 。还提供了每个茎的地面高度及以上（间隔为0.5-或1-m）的直径（包括树皮厚度）。茎生长数据基于从高和低的0.0-0.3 m处以高出0.5-m（茎高<7 m）或1.0-m（茎高ae 7 m）间隔的圆盘上的年轮读取数据。 。如果结合对异速生长数据的分析，则可以将源自这些年轮数据的茎体积增长转换为茎质量增长，这可以用作估算常绿橡树与全球气候变化相关的固碳量的有用资源。

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