Noh_rawdata_v20240214.xlsx

This dataset contains raw data used for a paper published at Journal of Geophysical Research – Biogeosciences, titled “Reconciling top-down and bottom-up estimates of ecosystem respiration in a mature eucalypt forest”. The paper was co-authored by Nam Jin Noh, Alexandre A. Renchon, Jürgen Knauer, Vanessa Haverd, Jinquan Li, Anne Griebel, Craig V.M. Barton, Jinyan Yang, Debjani Sihi, Stefan K. Arndt, Eric A. Davidson, Mark G. Tjoelker, and Elise Pendall.This study investigated seasonal patterns in field measurements, flux tower observations, and model-based components of ecosystem respiration and compared their responses to temperature changes in a dry eucalypt woodland near Sydney, Australia. This study highlights that concurrent, scaled chamber measurements validated flux tower observations to within 10%; implementing a substrate function into a land-surface model improved representation of heterotrophic respiration; and discrepancies between observations and simulations were largest for apparent temperature sensitivity of canopy and root respiration. Inconsistencies in the apparent (emergent) Q10 of Rroot, Rcanopy and Rstem between field measurements and modeled CABLE-POP outputs indicated a need for improving these components. By comparing component respiration rates between observations and model estimates, this study provides mechanistic insights that are relevant to model development.

本数据集包含发表于《地球物理学研究杂志-生物地球科学》（Journal of Geophysical Research – Biogeosciences）的一篇学术论文所用的原始数据，论文标题为《协调成熟桉树林生态系统呼吸的自上而下与自下而上估算结果》。该论文的共同作者包括Nam Jin Noh、Alexandre A. Renchon、Jürgen Knauer、Vanessa Haverd、Jinquan Li、Anne Griebel、Craig V.M. Barton、Jinyan Yang、Debjani Sihi、Stefan K. Arndt、Eric A. Davidson、Mark G. Tjoelker与Elise Pendall。本研究针对澳大利亚悉尼近郊的干燥桉树林地，对野外实测数据、通量塔观测结果以及基于模型的生态系统呼吸组分展开了季节动态分析，并对比了各组分对温度变化的响应特征。研究结果表明：其一，同步开展的标准化箱式测量可将通量塔观测结果的验证误差控制在10%以内；其二，在陆面模型中引入基质函数可优化异养呼吸的模拟表现；其三，观测值与模拟值之间的偏差在冠层呼吸与根系呼吸的表观温度敏感性方面最为显著。野外实测得到的根系呼吸（Rroot）、冠层呼吸（Rcanopy）与茎干呼吸（Rstem）的表观（涌现性）Q10值，与CABLE-POP模型的输出结果存在不一致，这说明亟需对这些呼吸组分的模拟方案进行改进。通过对比观测得到的呼吸组分速率与模型估算结果，本研究为生态系统模型的开发提供了具有机制阐释价值的科学见解。