关于《生长季生产力增加促使温带树木秋季叶片更早衰老》的评论
Comment on "Increased growing-season productivity drives earlier autumn leaf senescence in temperate trees".
作者信息
Norby Richard J
机构信息
Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, TN, USA.
出版信息
Science. 2021 Mar 5;371(6533). doi: 10.1126/science.abg1438.
PMID:33674465
Abstract
Zani (Research Articles, 27 November 2020, p. 1066) propose that enhancement of deciduous tree photosynthesis in a CO-enriched atmosphere will advance autumn leaf senescence. This premise is not supported by consistent observations from free-air CO enrichment (FACE) experiments. In most FACE experiments, leaf senescence or abscission was not altered or was delayed in trees exposed to elevated CO.
摘要
扎尼（《研究论文》，2020年11月27日，第1066页）提出，在二氧化碳浓度升高的大气中增强落叶树的光合作用会加速秋叶衰老。自由空气二氧化碳浓度升高（FACE）实验的一致观察结果并不支持这一前提。在大多数FACE实验中，暴露于高浓度二氧化碳的树木的叶片衰老或脱落没有改变或延迟。
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