文章基本信息

标题：A global 0.05° dataset for gross primary production of sunlit and shaded vegetation canopies from 1992 to 2020
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作者：Wenjun Bi ; Wei He ; Yanlian Zhou 等
期刊名称：Scientific Data
电子版ISSN：2052-4463
出版年度：2022
卷号：9
期号：1
页码：1-13
DOI：10.1038/s41597-022-01309-2
语种：English
出版社：Nature Publishing Group
摘要：Distinguishing gross primary production of sunlit and shaded leaves (GPPsun and GPPshade) is crucial for improving our understanding of the underlying mechanisms regulating long-term GPP variations . Here we produce a global 0 .05°, 8-day dataset for GPP, GPPshade and GPPsun over 1992–2020 using an updated two-leaf light use efciency model (TL-LUE), which is driven by the GLOBMAP leaf area index, CRUJRA meteorology, and ESA-CCI land cover. Our products estimate the mean annual totals of global GPP, GPPsun, and GPPshade over 1992–2020 at 125.0 ± 3.8 (mean ± std) Pg C a −1, 50.5 ± 1.2 Pg C a −1, and 74.5 ± 2.6 Pg C a −1, respectively, in which EBF (evergreen broadleaf forest) and CRO (crops) contribute more than half of the totals . They show clear increasing trends over time, in which the trend of GPP (also GPPsun and GPPshade) for CRO is distinctively greatest, and that for DBF (deciduous broadleaf forest) is relatively large and GPPshade overwhelmingly outweighs GPPsun . This new dataset advances our in-depth understanding of large-scale carbon cycle processes and dynamics .