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Explaining inter-annual variability of gross primary productivity from plant phenology and physiology
Explaining inter-annual variability of gross primary productivity from plant phenology and physiology
- Source :
- Agricultural and Forest Meteorology, Agricultural and Forest Meteorology, 2016, 226-227, pp.246-256. ⟨10.1016/j.agrformet.2016.06.010⟩
- Publication Year :
- 2016
- Publisher :
- HAL CCSD, 2016.
-
Abstract
- Climate variability influences both plant phenology and physiology, resulting in inter-annual variation in terrestrial gross primary productivity (GPP). However, it is still difficult to explain the inter-annual variability of GPP. In this study, we propose a Statistical Model of Integrated Phenology and Physiology (SMIPP) to explain the contributions of maximum daily GPP (GPP max ), and start and end of the growing season (GS start and GS end ) to the inter-annual variability of GPP observed at 27 sites across North America and Europe. Strong relationships are found between the anomalies of GS start and spring GPP (r = 0.82 ± 0.10), GPP max and summer GPP (r = 0.90 ± 0.14), and GS end and autumn GPP (r = 0.75 ± 0.18) within each site. Partial correlation analysis further supports strong correlations of annual GPP with GS start (partial r value being 0.72 ± 0.20), GPP max (0.87 ± 0.15), and GS end (0.59 ± 0.26), respectively. In addition, the three indicators are found independent from each other to influence annual GPP at most of the 27 sites. Overall, the site-calibrated SMIPP explains 90 ± 11% of the annual GPP variability among the 27 sites. In general, GPP max contributes to annual GPP variation more than the two phenological indicators. These results indicate that the inter-annual variability of GPP can be effectively estimated using the three indicators. Investigating plant physiology, and spring and autumn phenology to environmental changes can improve the prediction of the annual GPP trajectory under future climate change.
- Subjects :
- 0106 biological sciences
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences
Atmospheric Science
010504 meteorology & atmospheric sciences
Physiology
Growing season
Climate change
start of growing season
drought
010603 evolutionary biology
01 natural sciences
Gross primary productivity
Partial correlation analysis
Plant phenology
0105 earth and related environmental sciences
Global and Planetary Change
Phenology
Forestry
Future climate
[SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics
climate change
13. Climate action
daily maximum GPP
Environmental science
[SDV.EE.BIO]Life Sciences [q-bio]/Ecology, environment/Bioclimatology
end of growing season
Agronomy and Crop Science
Subjects
Details
- Language :
- English
- ISSN :
- 01681923
- Database :
- OpenAIRE
- Journal :
- Agricultural and Forest Meteorology, Agricultural and Forest Meteorology, 2016, 226-227, pp.246-256. ⟨10.1016/j.agrformet.2016.06.010⟩
- Accession number :
- edsair.doi.dedup.....3a25ef85b4b1980d1bab2ed268c7b4e5
- Full Text :
- https://doi.org/10.1016/j.agrformet.2016.06.010⟩