Climate seasonality limits leaf carbon assimilation and wood productivity in tropical forests
Climate seasonality limits leaf carbon assimilation and wood productivity in tropical forests
复制标题
DOI：
10.5194/bg-13-2537-2016
复制
发表时间：
2016-04
期刊：
影响因子：
4.9
通讯作者：
F. Wagner;B. Hérault;D. Bonal;C. Stahl;L. Anderson;T. Baker;Gabriel Sebastian Becker;H. Beeckman;Danilo Boanerges Souza;P. Botosso;D. Bowman;A. Bräuning;Benjamin Brede;Foster Brown;J. Camarero;P. Camargo;F. C. Cardoso;F. A. Carvalho;W. Castro;Rubens Koloski Chagas;J. Chave;E. Chidumayo;D. Clark;F. Costa;Camille Couralet;Paulo Maurício;H. Dalitz;V. R. Castro;J. D. F. Milani;Edilson Consuelo de Oliveira;Luciano de Souza Arruda;Jean-Louis Devineau;D. Drew;O. Dünisch;G. Durigan;E. Elifuraha;M. Fedele;L. Fedele;A. F. Filho;César Augusto Guimarães Finger;A. Franco;J. G. Junior;F. Galvão;A. Gebrekirstos;Robert Gliniars;P. Graça;A. Griffiths;J. Grogan;K. Guan;J. Homeier;M. R. Kanieski;L. Kho;J. Koenig;S. V. Kohler;Julia Krepkowski;J. P. Lemos-Filho;D. Lieberman;M. Lieberman;C. Lisi;Tomaz Longhi Santos;J. Ayala;E. Maeda;Y. Malhi;Vivian R. B. Maria;M. Marques;R. Marques;Hector Maza Maza Chamba-Hector-Maza-Maza-Chamba-1392168476;L. Mbwambo;Karina Melgaço;Hooz A. Mendivelso;B. Murphy;Joseph John O’Brien;S. Oberbauer;Naoki Okada;R. Pélissier;L. Prior;F. Roig;M. Ross;D. Rossatto;V. Rossi;L. Rowland;E. Rutishauser;H. Santana;M. Schulze;D. Selhorst;W. Silva;M. Silveira;Susanne Spannl;M. Swaine;J. J. Toledo-J.;M. M. Toledo-M.;M. Toledo;T. Toma;M. T. Filho;J. Hernández;J. Verbesselt;S. Vieira;Grégoire Laurent Vincent;C. Castilho;F. Volland;M. Worbes;M. Zanon;L. Aragão
中科院分区：
文献类型：
--
作者：
F. Wagner;B. Hérault;D. Bonal;C. Stahl;L. Anderson;T. Baker;Gabriel Sebastian Becker;H. Beeckman;Danilo Boanerges Souza;P. Botosso;D. Bowman;A. Bräuning;Benjamin Brede;Foster Brown;J. Camarero;P. Camargo;F. C. Cardoso;F. A. Carvalho;W. Castro;Rubens Koloski Chagas;J. Chave;E. Chidumayo;D. Clark;F. Costa;Camille Couralet;Paulo Maurício;H. Dalitz;V. R. Castro;J. D. F. Milani;Edilson Consuelo de Oliveira;Luciano de Souza Arruda;Jean-Louis Devineau;D. Drew;O. Dünisch;G. Durigan;E. Elifuraha;M. Fedele;L. Fedele;A. F. Filho;César Augusto Guimarães Finger;A. Franco;J. G. Junior;F. Galvão;A. Gebrekirstos;Robert Gliniars;P. Graça;A. Griffiths;J. Grogan;K. Guan;J. Homeier;M. R. Kanieski;L. Kho;J. Koenig;S. V. Kohler;Julia Krepkowski;J. P. Lemos-Filho;D. Lieberman;M. Lieberman;C. Lisi;Tomaz Longhi Santos;J. Ayala;E. Maeda;Y. Malhi;Vivian R. B. Maria;M. Marques;R. Marques;Hector Maza Maza Chamba-Hector-Maza-Maza-Chamba-1392168476;L. Mbwambo;Karina Melgaço;Hooz A. Mendivelso;B. Murphy;Joseph John O’Brien;S. Oberbauer;Naoki Okada;R. Pélissier;L. Prior;F. Roig;M. Ross;D. Rossatto;V. Rossi;L. Rowland;E. Rutishauser;H. Santana;M. Schulze;D. Selhorst;W. Silva;M. Silveira;Susanne Spannl;M. Swaine;J. J. Toledo-J.;M. M. Toledo-M.;M. Toledo;T. Toma;M. T. Filho;J. Hernández;J. Verbesselt;S. Vieira;Grégoire Laurent Vincent;C. Castilho;F. Volland;M. Worbes;M. Zanon;L. Aragão
热带森林碳循环的季节性气候驱动因素仍然知之甚少，尽管这些森林比任何其他陆地生态系统都要吸收和储存更多的碳。基于一个独特的组合的季节性泛热带数据集从89个实验地点（68包括地上木材生产力测量和35凋落物生产力测量），其相关的冠层光合能力（增强植被指数，EVI）和气候，我们问如何碳同化和地上分配与气候季节性在热带森林和它们如何相互作用的季节性碳循环。我们发现，冠层光合能力的季节性正响应降水时，降雨量< 2000毫米年（-1）（水有限的森林）和辐射，否则（光有限的森林）。另一方面，独立的气候限制，木材生产力和凋落物的季节性变化的降水量和蒸散量，分别驱动。因此，光限林表现出冠层光合能力和木材生产力之间的共生关系。降水的一级控制可能表明，在干旱气候条件下，在水分有限的森林中，以及在未来降雨量< 2000 mm yr（-1）的当前光照有限的森林中，热带森林生产力会下降。
The seasonal climate drivers of the carbon cycle in tropical forests remain poorly known, although these forests account for more carbon assimilation and storage than any other terrestrial ecosystem. Based on a unique combination of seasonal pan-tropical data sets from 89 experimental sites (68 include aboveground wood productivity measurements and 35 litter productivity measurements), their associated canopy photosynthetic capacity (enhanced vegetation index, EVI) and climate, we ask how carbon assimilation and aboveground allocation are related to climate seasonality in tropical forests and how they interact in the seasonal carbon cycle. We found that canopy photosynthetic capacity seasonality responds positively to precipitation when rainfall is < 2000 mm yr(-1) (water-limited forests) and to radiation otherwise (light-limited forests). On the other hand, independent of climate limitations, wood productivity and litterfall are driven by seasonal variation in precipitation and evapotranspiration, respectively. Consequently, light-limited forests present an asynchronism between canopy photosynthetic capacity and wood productivity. First-order control by precipitation likely indicates a decrease in tropical forest productivity in a drier climate in water-limited forest, and in current light-limited forest with future rainfall < 2000 mm yr(-1).