The Widely Increasing Sensitivity of Vegetation Productivity to Phenology in Northern Middle and High Latitudes
Abstract Although vegetation phenology generally alters productivity, spatiotemporal variations in this effect and its potential drivers remain unclear. We used satellite‐based vegetation phenology and gross primary productivity (GPP) data sets to analyze trends in the sensitivity of spring GPP to s...
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| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2025-02-01
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| Series: | Geophysical Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1029/2024GL113892 |
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| Summary: | Abstract Although vegetation phenology generally alters productivity, spatiotemporal variations in this effect and its potential drivers remain unclear. We used satellite‐based vegetation phenology and gross primary productivity (GPP) data sets to analyze trends in the sensitivity of spring GPP to spring phenology (spring SGP) and autumn GPP to autumn phenology (autumn SGP). We also explored potential drivers across the northern middle and high latitudes (>30°N) from 2001 to 2019. Our analysis revealed significant increases in spring and autumn SGP (P < 0.05), with pronounced increases in boreal forests and tundra biomes. In contrast, spring SGP significantly declined in deserts and xeric shrublands (P < 0.05). Spring temperatures and leaf area index (LAI) were key factors influencing spring SGP, while autumn LAI and downward surface solar radiation drove the variation in autumn SGP. Our findings highlight the critical role of phenology‐productivity interactions in achieving carbon goals and the need for future research on climate feedback mechanisms. |
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| ISSN: | 0094-8276 1944-8007 |