Complete data from the Barro Colorado 50-ha plot: 423617 trees, 35 years

The 50-ha plot at Barro Colorado Island was initially demarcated and fully
censused in 1982, and has been fully censused 7 times since, every 5 years
from 1985 through 2015 (Hubbell and Foster 1983, Hubbell et al. 1990,
Condit et al. 2012, Condit et al. 2017). Every measurement of every stem
over 8 censuses is included in this archive. Most users will need only the
8 R Analytical Tables in the format tree, which come here zipped
together into a single archive (bci.tree.zip), plus the single R Species
Table. Additional tables cover all individuals stems, additional
measurements at mulitple positions on some stems, and the full database in
original MySQL format. This is the 2019 version of the database, frozen as
of 30 May 2019, replacing the 2012 Smithsonian archive
(http://dx.doi.org/10.5479/data.bci.20130603). There are unauthorized
versions of the BCI database available elsewhere. This is the only version
approved by the lead investigators (Condit and Hubbell). PIs Condit and
Hubbell would like to be informed of papers resulting from the BCI plot
data. Depending on our level of interest and how much a paper depends on
the BCI plot, co-authorship might be requested. Please cite this archive
as Condit R., Perez, R., Aguilar, S., Lao, S., Foster, R., Hubbell, S.P.
2019. Complete data from the Barro Colorado 50-ha plot: 423617 trees, 35
years, 2019
version.   https://doi.org/10.15146/5xcp-0d46.
References Hubbell, S. P. and Foster, R. B. 1983. Diversity of canopy
trees in a neotropical forest and implications for conservation. Pp. 25-41
in Tropical Rain Forest: Ecology and Management, Whitmore, T., Chadwick,
A., and Sutton, A. (Eds.). The British Ecological Society. Hubbell, S. P.,
Condit, R., and Foster, R. B. 1990. Presence and absence of density
dependence in a Neotropical tree community. Philosophical Transactions of
the Royal Society of London. Series B: Biological Sciences Pages 269–281.
pdf http://conditdatacenter.org/pdfs/HubbellConditFoster.PhilTrans1990.pdf
Condit, R., 1998. Tropical Forest Census Plots: Methods and Results from
Barro Colorado Island, Panama and a Comparison with Other Plots.
Springer-Verlag, Berlin. pdf Condit_1998_CensusPlotsmethodsBook.pdf.
Harms, K., Condit, R., Hubbell, S., and Foster, R. 2001. Habitat
associations of trees and shrubs in a 50-ha Neotropical forest plot.
Journal of Ecology 89:947–959. pdf
http://conditdatacenter.org/pdfs/Condit_harmsetal.jecol.2001.pdf Condit,
R., Chisholm, R. A., and Hubbell, S. P. 2012. Thirty years of forest
census at Barro Colorado and the importance of immigration in maintaining
diversity. PLoS ONE 7:e49826. pdf
http://conditdatacenter.org/pdfs/ConditChisholmHubbell2012.pdf Condit, R.,
Lao, S., Singh, A., Esufali, S., and Dolins, S. 2014. Data and database
standards for permanent forest plots in a global network. Forest Ecology
and Management, 316: 21-31. pdf
http://conditdatacenter.org/pdfs/ConditEtAl_FORECO2014.pdf Cushman, K.,
Muller-Landau, H. C., Condit, R. S., and Hubbell, S. P. 2014. Improving
estimates of biomass change in buttressed trees using tree taper models.
Methods in Ecology and Evolution, 5:573–582. pdf
http://conditdatacenter.org/pdfs/CushmanConditEtAl_2014_MEE.pdf Condit,
R., Pérez, R., Aguilar, S., Lao, S., and Hubbell, S. P. 2017. Demographic
trends and climate over 35 years in the Barro Colorado 50 ha plot. Forest
Ecosystems 4:1–13. pdf
http://conditdatacenter.org/pdfs/Condit_et_al-2017-Forest_Ecosystems.pdf
Condit R., Perez, R., Aguilar, S., Lao, S., Foster, R., Hubbell, S.P.
2019. BCI 50-ha plot taxonomy, 2019 version. DataONE Dash, Dataset,
https://doi.org/10.15146/R3FH61.

巴罗科罗拉多岛（Barro Colorado Island）的50公顷森林样地（50-ha plot）于1982年首次划定并完成全面普查，此后分别于1985年至2015年间每5年开展一次全面普查，累计完成8次普查（含首次普查），相关工作详见Hubbell与Foster 1983、Hubbell等1990、Condit等2012及Condit等2017的研究成果。本归档涵盖8次普查中所有茎干的全部测量数据。多数用户仅需使用格式为tree的8份R分析表格，这些表格已打包为单个压缩归档文件"bci.tree.zip"，此外还可获取单份R物种表。额外的数据表涵盖所有个体茎干、部分茎干多位置的附加测量数据，以及原始MySQL格式的完整数据库。

本数据集为2019版，于2019年5月30日冻结更新，替代了2012年史密森学会发布的归档版本（http://dx.doi.org/10.5479/data.bci.20130603）。目前网络上存在非官方发布的巴罗科罗拉多岛样地数据库，本版本是仅由首席研究员Condit与Hubbell认可的官方版本。首席研究员Condit和Hubbell希望获悉使用该样地数据发表的论文，根据研究相关性及论文对本样地数据的依赖程度，可能会请求共同作者身份。请按以下格式引用本归档：
Condit R., Perez, R., Aguilar, S., Lao, S., Foster, R., Hubbell, S.P. 2019. Complete data from the Barro Colorado 50-ha plot: 423617 trees, 35 years, 2019 version. https://doi.org/10.15146/5xcp-0d46.

### 参考文献
1. Hubbell, S. P. 与 Foster, R. B. 1983. 新热带林冠层树木的多样性及其保护意义。收录于《热带雨林：生态与管理》（Tropical Rain Forest: Ecology and Management），Whitmore, T.、Chadwick, A. 与 Sutton, A. 主编。英国生态学会（The British Ecological Society），第25-41页。
2. Hubbell, S. P., Condit, R., 与 Foster, R. B. 1990. 新热带树木群落中的密度依赖存在性分析。《伦敦皇家学会哲学学报B辑：生物科学》（Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences），第269–281页。PDF下载链接：http://conditdatacenter.org/pdfs/HubbellConditFoster.PhilTrans1990.pdf
3. Condit, R., 1998. 《热带森林普查样地：巴拿马巴罗科罗拉多岛的方法与结果及与其他样地的对比》。施普林格出版社（Springer-Verlag），柏林。PDF下载链接：Condit_1998_CensusPlotsmethodsBook.pdf
4. Harms, K., Condit, R., Hubbell, S., 与 Foster, R. 2001. 50公顷新热带森林样地内树木与灌木的生境关联。《生态学杂志》（Journal of Ecology），第89卷：947–959页。PDF下载链接：http://conditdatacenter.org/pdfs/Condit_harmsetal.jecol.2001.pdf
5. Condit, R., Chisholm, R. A., 与 Hubbell, S. P. 2012. 巴罗科罗拉多岛30年森林普查：移民在维持多样性中的重要性。《公共科学图书馆·综合》（PLoS ONE），第7卷：e49826。PDF下载链接：http://conditdatacenter.org/pdfs/ConditChisholmHubbell2012.pdf
6. Condit, R., Lao, S., Singh, A., Esufali, S., 与 Dolins, S. 2014. 全球网络永久森林样地的数据与数据库标准。《森林生态与管理》（Forest Ecology and Management），第316卷：21-31页。PDF下载链接：http://conditdatacenter.org/pdfs/ConditEtAl_FORECO2014.pdf
7. Cushman, K., Muller-Landau, H. C., Condit, R. S., 与 Hubbell, S. P. 2014. 利用树干锥度模型改进板根树木生物量变化估算结果。《生态学与进化方法》（Methods in Ecology and Evolution），第5卷：573–582页。PDF下载链接：http://conditdatacenter.org/pdfs/CushmanConditEtAl_2014_MEE.pdf
8. Condit, R., Pérez, R., Aguilar, S., Lao, S., 与 Hubbell, S. P. 2017. 巴罗科罗拉多岛50公顷样地35年间的种群动态趋势与气候变化。《森林生态系统》（Forest Ecosystems），第4卷：1–13页。PDF下载链接：http://conditdatacenter.org/pdfs/Condit_et_al-2017-Forest_Ecosystems.pdf
9. Condit R., Perez, R., Aguilar, S., Lao, S., Foster, R., Hubbell, S.P. 2019. 巴罗科罗拉多岛50公顷样地分类学数据（2019版）。DataONE Dash，数据集，https://doi.org/10.15146/R3FH61.

搜集汇总

背景与挑战

背景概述

该数据集是巴罗科罗拉多岛50公顷热带森林样地35年（1982-2015年）的完整监测数据，包含423,617棵树的详细记录，覆盖8次全面普查。它提供了每棵树的生长、死亡、物种分类和地形信息，适用于研究森林动态、生物多样性和气候变化影响。