Tropical tree growth sensitivity to climate is driven by species intrinsic growth rate and leaf traits
Tropical tree growth sensitivity to climate is driven by species intrinsic growth rate and leaf traits
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热带树木生长对气候的敏感性是由物种内在生长速率和叶子特征驱动的
DOI：
10.1101/2021.06.08.447571
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Bauman D
中科院分区：
文献类型：
--
作者：
Bauman D
更好地了解气候如何影响树种的生长对于改进气候变化下森林动态的预测至关重要。长期气候平均值（平均气候）驱动物种基线生长率的空间变化，而随着时间的推移偏离这些平均值（异常）可能会在当地基线周围产生生长变化。然而，到目前为止，跨越气候梯度的长期树木普查数据的稀缺性限制了我们对它们各自作用的理解，特别是在热带系统中。此外，树木生长对气候的敏感性可能在物种之间差异很大，这些差异背后的生态策略仍然知之甚少。在这里，我们利用一个特殊的数据集的49年的增长数据，509个树种在23个热带雨林地块沿着气候梯度，研究多年树木生长如何应对气候手段和异常，以及物种的功能性状如何介导这些生长对气候的反应。我们发现，大气蒸发需求和太阳辐射的异常增加一贯减少树木的生长。干燥的森林和快速生长的物种对水分胁迫异常更敏感。此外，与水分利用和光合作用有关的物种特征部分解释了生长对气候平均值和异常的敏感性差异。我们的研究表明，气候手段和异常都塑造了热带森林中的树木生长，物种特征可以为理解这些人口对气候变化的反应提供见解，为预测不同气候轨迹下的热带森林动态提供了一种有希望的方法。
A better understanding of how climate affects growth in tree species is essential for improved predictions of forest dynamics under climate change. Long‐term climate averages (mean climate) drive spatial variations in species’ baseline growth rates, whereas deviations from these averages over time (anomalies) can create growth variation around the local baseline. However, the rarity of long‐term tree census data spanning climatic gradients has so far limited our understanding of their respective role, especially in tropical systems. Furthermore, tree growth sensitivity to climate is likely to vary widely among species, and the ecological strategies underlying these differences remain poorly understood. Here, we utilize an exceptional dataset of 49 years of growth data for 509 tree species across 23 tropical rainforest plots along a climatic gradient to examine how multiannual tree growth responds to both climate means and anomalies, and how species’ functional traits mediate these growth responses to climate. We show that anomalous increases in atmospheric evaporative demand and solar radiation consistently reduced tree growth. Drier forests and fast‐growing species were more sensitive to water stress anomalies. In addition, species traits related to water use and photosynthesis partly explained differences in growth sensitivity to both climate means and anomalies. Our study demonstrates that both climate means and anomalies shape tree growth in tropical forests and that species traits can provide insights into understanding these demographic responses to climate change, offering a promising way forward to forecast tropical forest dynamics under different climate trajectories.
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影响因子：
16.8
作者：
Violle C;Thuiller W;Mouquet N;Munoz F;Kraft NJB;Cadotte MW;Livingstone SW;Mouillot D
通讯作者：
Mouillot D
影响因子：
11.6
作者：
J. Powers;German Vargas-G;T. Brodribb;N. Schwartz;Daniel Pérez‐Aviles;Chris M. Smith‐Martin;J. Becknell;F. Aureli;R. Blanco;Erick Calderón-Morales;J. Calvo-Alvarado;A. Calvo-Obando;María Marta Chavarría;Dorian Carvajal-Vanegas;César Dionisio Jiménez-Rodríguez;Evin Murillo Chacon;C. Schaffner;Leland K. Werden;Xiangtao Xu;D. Medvigy
通讯作者：
J. Powers;German Vargas-G;T. Brodribb;N. Schwartz;Daniel Pérez‐Aviles;Chris M. Smith‐Martin;J. Becknell;F. Aureli;R. Blanco;Erick Calderón-Morales;J. Calvo-Alvarado;A. Calvo-Obando;María Marta Chavarría;Dorian Carvajal-Vanegas;César Dionisio Jiménez-Rodríguez;Evin Murillo Chacon;C. Schaffner;Leland K. Werden;Xiangtao Xu;D. Medvigy
澳大利亚热带雨林地块的长期茎库存数据
DOI：
--
发表时间：
2014
期刊：
影响因子：
--
作者：
M. Bradford;H. Murphy;A. Ford;Dominic L. Hogan;D. Metcalfe
通讯作者：
D. Metcalfe
影响因子：
9.4
作者：
De Kauwe, Martin G.;Lin, Yan-Shih;Domingues, Tomas F.
通讯作者：
Domingues, Tomas F.
影响因子：
5.2
作者：
Aragao, Luiz Eduardo O. C.;Malhi, Yadvinder;Shimabukuro, Yosio Edemir
通讯作者：
Shimabukuro, Yosio Edemir