Contrasting trends between peak photosynthesis timing and peak greenness timing across seven typical biomes in Northern Hemisphere mid-latitudes

Ge, Zhongxi; Jing, Huang; Wang, Xufeng; Tang, Xuguang; Fan, Lei; Zhao, Yinjun; Ma, Mingguo

doi:10.1016/j.agrformet.2022.109054

Cited by 7 publications

(3 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An overall advance in POS has been found across extratropical Northern Hemisphere through 34‐year remote‐sensing normalized difference vegetation index (NDVI) observations (Gonsamo et al, 2018). However, recent research suggested that no advanced trend of POS has been observed in Northern Hemisphere mid‐latitudes whether derived from GPP (Ge et al, 2022), or derived from NDVI (Zhao et al, 2022). Therefore, trends in POS need to be further explored in the Northern Hemisphere under climate change.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, inversion of SOS and EOS based on SIF confirms to the actual physiological conditions of vegetation, rather than the VIs‐based phenology (Yang et al, 2019). NDVI was frequently used for POS monitoring, but recent studies found that NDVI can only track peak greenness rather than peak photosynthesis (Ge et al, 2022). However, less studies used SIF to track POS even if the machine learning method breaks the limitation of remote‐sensing SIF time span (Zhang et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Spring phenology rather than climate dominates the trends in peak of growing season in the Northern Hemisphere

Huang

Zhou

Chi

2023

Global Change Biology

View full text Add to dashboard Cite

Shifts in plant phenology regulate ecosystem structure and function, which feeds back to the climate system. However, drivers for the peak of growing season (POS) in seasonal dynamics of terrestrial ecosystems remain unclear. Here, spatial–temporal patterns of POS dynamics were analyzed by solar‐induced chlorophyll fluorescence (SIF) and vegetation index in the Northern Hemisphere over the past two decades from 2001 to 2020. Overall, a slow advanced POS was observed in the Northern Hemisphere, while a delayed POS distributed mainly in northeastern North America. Trends of POS were driven by the start of growing season (SOS) rather than pre‐POS climate both at hemisphere and biome scale. The effect of SOS on the trends in POS was the strongest in shrublands while the weakest in evergreen broad‐leaved forest. These findings highlight the crucial role of biological rhythms rather than climatic factors in exploring seasonal carbon dynamics and global carbon balance.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Spring phenology rather than climate dominates the trends in peak of growing season in the Northern Hemisphere

Huang

Zhou

Chi

2023

Global Change Biology

View full text Add to dashboard Cite

show abstract

“…It is worth noting that the POS in this study corresponded to the maximal vegetation index, which represents the timing of the seasonal peak canopy structure, and did not match with the timing of GPP max . Ge et al [74] found that the seasonal peak for photosynthesis was earlier than the peak for canopy structure in more than 87.5% of the ecosystems in the Northern Hemisphere (>30 • N), and this mismatch increased due to increasing atmospheric CO 2 . The timing of GPP max is important to characterize seasonal carbon uptake [75].…”

Section: Pos and The Timing Of Gpp Maxmentioning

confidence: 99%

Earlier Spring-Summer Phenology and Higher Photosynthetic Peak Altered the Seasonal Patterns of Vegetation Productivity in Alpine Ecosystems

Yang,

Liu,

Chen

et al. 2024

Remote Sensing

View full text Add to dashboard Cite

Carbon uptake of vegetation is controlled by phenology and photosynthetic carbon uptake capacity. However, our knowledge of the seasonal responses of vegetation productivity to phenological and physiological changes in alpine ecosystems is still weak. In this study, we quantified the spatio-temporal variations of vegetation phenology and gross primary productivity (GPP) across the source region of the Yellow River (SRYR) by analyzing MODIS-derived vegetation phenology and GPP from 2001 to 2019, and explored how vegetation phenology and maximum carbon uptake capacity (GPPmax) affected seasonal GPP over the region. Our results showed that the SRYR experienced significantly advanced trends (p < 0.05) for both start (SOS) and peak (POS) of the growing season from 2001 to 2019. Spring GPP (GPPspr) had a significantly increasing trend (p < 0.01), and the earlier SOS had obvious positive effects on GPPspr. Summer GPP (GPPsum) was significantly and negatively correlated to POS (p < 0.05). In addition, GPPmax had a significant and positive correlation with GPPsum and GPPann (p < 0.01), respectively. It was found that an earlier spring-summer phenology and higher photosynthetic peak enhanced the photosynthetic efficiency of vegetation in spring and summer and altered the seasonal patterns of vegetation productivity in the SRYR under warming and wetting climates. This study indicated that not only spring and autumn phenology but also summer phenology and maximum carbon uptake capacity should be regarded as crucial indicators regulating the carbon uptake process in alpine ecosystems. This research provides important information about how changes in phenology affect vegetation productivity in alpine ecosystems under global climate warming.

show abstract

Divergent contributions of spring and autumn photosynthetic phenology to seasonal carbon uptake of subtropical vegetation in China

Peng,

Li,

Zhou

et al. 2024

J. Geogr. Sci.

View full text Add to dashboard Cite

Contrasting trends between peak photosynthesis timing and peak greenness timing across seven typical biomes in Northern Hemisphere mid-latitudes

Cited by 7 publications

References 54 publications

Spring phenology rather than climate dominates the trends in peak of growing season in the Northern Hemisphere

Spring phenology rather than climate dominates the trends in peak of growing season in the Northern Hemisphere

Earlier Spring-Summer Phenology and Higher Photosynthetic Peak Altered the Seasonal Patterns of Vegetation Productivity in Alpine Ecosystems

Divergent contributions of spring and autumn photosynthetic phenology to seasonal carbon uptake of subtropical vegetation in China

Contact Info

Product

Resources

About