Tree Canopies Reflect Mycorrhizal Composition

Tree Canopies Reflect Mycorrhizal Composition
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树冠反映菌根组成

DOI:
10.1029/2021gl092764
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发表时间:
2021
影响因子:
5.2
通讯作者:
Litton, Creighton M.
Litton, Creighton M.
中科院分区:
地球科学1区
文献类型:
--
作者:
Sousa, Daniel;Fisher, Joshua B.;Galvan, Fernando Romero;Pavlick, Ryan P.;Cordell, Susan;Giambelluca, Thomas W.;Giardina, Christian P.;Gilbert, Gregory S.;Imran‐Narahari, Faith;Litton, Creighton M.

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Mycorrhizae alter global patterns of CO2fertilization, carbon storage, and elemental cycling, yet knowledge of their global distributions is currently limited by the availability of forest inventory data. Here, we show that maps of tree‐mycorrhizal associations (hereafter “mycorrhizal maps”) can be improved by the novel technology of imaging spectroscopy because mycorrhizal signatures propagate up from plant roots to impact forest canopy chemistry. We analyzed measurements from 143 airborne imaging spectroscopy surveys over 112,975 individual trees collected across 13 years. Results show remarkable accuracy in capturing ground truth observations of mycorrhizal associations from canopy signals across disparate landscapes (R2= 0.92,p< 0.01). Upcoming imaging spectroscopy satellite missions can reveal new insights into landscape‐scale variations in water, nitrogen, phosphorus, carotenoid/anthocyanin, and cellulose/lignin composition. Applied globally, this approach could improve the spatial precision of mycorrhizal distributions by a factor of roughly 104and facilitate the incorporation of dynamic shifts in forest composition into Earth system models.
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