Nitrogen addition delays the emergence of an aridity-induced threshold for plant biomass
© The Author(s) 2023. Published by Oxford University Press on behalf of China Science Publishing & Media Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
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Oxford University Press
2023-11
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| Subjects: | Aboveground biomass, Root:shoot ratios, Elevated CO2, Nitrogen fertilization, Ecosystem threshold, |
| Online Access: | http://hdl.handle.net/10261/348418 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100001809 http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100002809 http://dx.doi.org/10.13039/501100011033 http://dx.doi.org/10.13039/501100003359 http://dx.doi.org/10.13039/100008054 |
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Aboveground biomass Root:shoot ratios Elevated CO2 Nitrogen fertilization Ecosystem threshold Aboveground biomass Root:shoot ratios Elevated CO2 Nitrogen fertilization Ecosystem threshold |
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Aboveground biomass Root:shoot ratios Elevated CO2 Nitrogen fertilization Ecosystem threshold Aboveground biomass Root:shoot ratios Elevated CO2 Nitrogen fertilization Ecosystem threshold Li, Hailing Terrer, César Berdugo, Miguel Maestre, Fernando T. Zhu, Zaichun Peñuelas, Josep Yu, Kailiang Luo, Lin Gong, Jie-Yu Ye, Jian-Sheng Nitrogen addition delays the emergence of an aridity-induced threshold for plant biomass |
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© The Author(s) 2023. Published by Oxford University Press on behalf of China Science Publishing & Media Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
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Institute of Tibetan Plateau Research |
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Institute of Tibetan Plateau Research Li, Hailing Terrer, César Berdugo, Miguel Maestre, Fernando T. Zhu, Zaichun Peñuelas, Josep Yu, Kailiang Luo, Lin Gong, Jie-Yu Ye, Jian-Sheng |
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Aboveground biomass Root:shoot ratios Elevated CO2 Nitrogen fertilization Ecosystem threshold |
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Li, Hailing Terrer, César Berdugo, Miguel Maestre, Fernando T. Zhu, Zaichun Peñuelas, Josep Yu, Kailiang Luo, Lin Gong, Jie-Yu Ye, Jian-Sheng |
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Li, Hailing |
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Nitrogen addition delays the emergence of an aridity-induced threshold for plant biomass |
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Nitrogen addition delays the emergence of an aridity-induced threshold for plant biomass |
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Nitrogen addition delays the emergence of an aridity-induced threshold for plant biomass |
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Nitrogen addition delays the emergence of an aridity-induced threshold for plant biomass |
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Nitrogen addition delays the emergence of an aridity-induced threshold for plant biomass |
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nitrogen addition delays the emergence of an aridity-induced threshold for plant biomass |
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Oxford University Press |
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2023-11 |
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http://hdl.handle.net/10261/348418 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100001809 http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100002809 http://dx.doi.org/10.13039/501100011033 http://dx.doi.org/10.13039/501100003359 http://dx.doi.org/10.13039/100008054 |
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1792484734647926784 |
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dig-ibe-es-10261-3484182024-02-28T02:35:49Z Nitrogen addition delays the emergence of an aridity-induced threshold for plant biomass Li, Hailing Terrer, César Berdugo, Miguel Maestre, Fernando T. Zhu, Zaichun Peñuelas, Josep Yu, Kailiang Luo, Lin Gong, Jie-Yu Ye, Jian-Sheng Institute of Tibetan Plateau Research Fundamental Research Funds for the Central Universities (China) Generalitat Valenciana Ministerio de Ciencia e Innovación (España) National Natural Science Foundation of China Agencia Estatal de Investigación (España) European Commission Fundación Ramón Areces Generalitat de Catalunya Aboveground biomass Root:shoot ratios Elevated CO2 Nitrogen fertilization Ecosystem threshold © The Author(s) 2023. Published by Oxford University Press on behalf of China Science Publishing & Media Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. Crossing certain aridity thresholds in global drylands can lead to abrupt decays of ecosystem attributes such as plant productivity, potentially causing land degradation and desertification. It is largely unknown, however, whether these thresholds can be altered by other key global change drivers known to affect the water-use efficiency and productivity of vegetation, such as elevated CO and nitrogen (N). Using >5000 empirical measurements of plant biomass, we showed that crossing an aridity (1–precipitation/potential evapotranspiration) threshold of ∼0.50, which marks the transition from dry sub-humid to semi-arid climates, led to abrupt declines in aboveground biomass (AGB) and progressive increases in root:shoot ratios, thus importantly affecting carbon stocks and their distribution. N addition significantly increased AGB and delayed the emergence of its aridity threshold from 0.49 to 0.55 (P < 0.05). By coupling remote sensing estimates of leaf area index with simulations from multiple models, we found that CO enrichment did not alter the observed aridity threshold. By 2100, and under the RCP 8.5 scenario, we forecast a 0.3% net increase in the global land area exceeding the aridity threshold detected under a scenario that includes N deposition, in comparison to a 2.9% net increase if the N effect is not considered. Our study thus indicates that N addition could mitigate to a great extent the negative impact of increasing aridity on plant biomass in drylands. These findings are critical for improving forecasts of abrupt vegetation changes in response to ongoing global environmental change. This research was supported by the Second Tibetan Plateau Scientific Expedition and Research (2019QZKK0305), the Fundamental Research Funds for the Central Universities (lzujbky-2022-ct01), ‘111’ Project (BP0719040) and ‘Innovation Star’ project of Gansu Province's outstanding graduate students in 2023 (2023CXZX-132). F.T.M. is supported by Generalitat Valenciana (CIDEGENT/2018/041) and the Spanish Ministry of Science and Innovation (EUR2022-134048). Z.Z. is supported by the National Natural Science Foundation of China (41 901 122) and the Shenzhen Fundamental Research Program (GXWD20201231165807007- 20200814213435001). J.P. is supported by the Spanish Government grant TED2021-132627B-I00 funded by MCIN, AEI/10.13039/501 100 011 033 and the European Union NextGenerationEU/PRTR, the Fundación Ramón Areces grant CIVP20A6621, and the Catalan Government grant SGR2021-1333. 2024-02-27T07:55:52Z 2024-02-27T07:55:52Z 2023-11 2024-02-27T07:55:52Z artículo doi: 10.1093/nsr/nwad242 e-issn: 2053-714X issn: 2095-5138 National Science Review 10(11): nwad242 (2023) http://hdl.handle.net/10261/348418 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100001809 http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100002809 http://dx.doi.org/10.13039/501100011033 http://dx.doi.org/10.13039/501100003359 http://dx.doi.org/10.13039/100008054 #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/AEI//TED2021-132627B-I00 Publisher's version The underlying dataset has been published as supplementary material of the article in the publisher platform at http://dx.doi.org/10.1093/nsr/nwad242 http://dx.doi.org/10.1093/nsr/nwad242 Sí open application/pdf Oxford University Press |