A comparison of species growth rates from four moist tropical forest regions using increment- size ordination
A comparison of species growth rates from four moist tropical forest regions using increment- size ordination
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使用增量大小排序比较四个潮湿热带森林地区的物种生长率
DOI：
10.1505/ifor.4.3.196.17398
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
H. Wright
中科院分区：
文献类型：
--
作者：
D. Alder;F. Oavika;M. Sánchez;J.N.M. Silva;P. Hout;H. Wright
摘要 对来自巴西、哥斯达黎加、圭亚那和巴布亚新几内亚永久样地的 204 个物种的生长率和典型大小进行了比较。生长率表示为平均胸径增量，典型尺寸表示为累积直径分布的 95% 点 (D95)。通过加权聚类分析方法对物种排序进行分析，将来自 4 个区域的数据形成 16 个物种组。仅包括20厘米及以上的树木，以及具有50个或更多样本树的树种。结果以表格形式列出了平均组增量、死亡率和 D95。列出了每个组和 PSP 地点的常见物种并讨论了它们的生态学。不同地点在增量尺寸图上的位置的生态和木材密度是一致的。尽管存在系统性高估，但通过增量大小图公式估计的死亡率与观察到的死亡率相关（R2 69.9%）。出于简单的林分预测的目的，所提出的方法可能有助于在缺乏 PSP 数据的情况下根据森林清查数据估计可能的增长率。网站 (www.myrlin.org) 提供工作表、软件和更多文档。
SUMMARY Growth rates and typical size are compared for 204 species from permanent sample plots in Brazil, Costa Rica, Guyana and Papua New Guinea. Growth rates were expressed as mean dbh increment, and typical size as 95% point of cumulative diameter distribution (D95). An ordination of species was analysed by a weighted cluster analysis method to form 16 species groups for the data from the 4 regions. Only trees 20 cm and above were included, and species with 50 or more sample trees. Results are tabulated for mean group increments, mortality rates and D95. Common species in each group and PSP locality are listed and their ecology discussed. Ecology and wood density are consistent between localities in their position on the increment-size graph. Mortality estimated by formula from the increment-size graph correlates with observed mortalities (R2 69.9%), although there is systematic overestimation. The methodology presented may be useful for estimating probable growth rates from forest inventory data where PSP data is lacking, for purposes of simple stand projection. A website (www.myrlin.org) provides worksheets, software and further documentation.