Some Aspects of Leaf Senescence

Miloud, Hafsi; Guendouz, Ali

doi:10.5772/32787

Cited by 4 publications

(4 citation statements)

References 41 publications

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“…Once formed, the cells of the leaves and fruit rarely undergo cell division and their growth relies on cell expansion. If the water pressure is insufficient to promote elongation, these organs will be small in relation with the those formed in a well-hydrated environment [22].…”

Section: Water Relations and Influence On Plant Growth And Developmentmentioning

confidence: 99%

Drought and Its Consequences to Plants – From Individual to Ecosystem

Silva¹,

Albuquerque²,

Neto³

et al. 2013

Responses of Organisms to Water Stress

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Section: Water Relations and Influence On Plant Growth And Developmentmentioning

confidence: 99%

Drought and Its Consequences to Plants – From Individual to Ecosystem

Silva¹,

Albuquerque²,

Neto³

et al. 2013

Responses of Organisms to Water Stress

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“…Numerous studies based on both ground and satellite observations have reported a progressively earlier start of vegetation growing season (SOS) during spring (Schwartz et al ., ; Fu et al ., ; Wang et al ., ) and a less consistent end of vegetation growing season (EOS) in autumn (Menzel & Fabian, ; Jeong et al ., ; Yang et al ., ). Compared with SOS (Cleland et al ., ; Yu et al ., ; Guo et al ., ), the response of EOS to climate change has drawn less attention (Miloud & Ali, ; Gallinat et al ., ). Recent studies revealed that EOS may even contribute larger than SOS in the extension of growing season length (Zhu et al ., ; Garonna et al ., ) and hence play a fundamental role in regulating the carbon balance in temperate vegetation (Piao et al ., ; Richardson et al ., ).…”

Section: Introductionmentioning

confidence: 98%

Temperature, precipitation, and insolation effects on autumn vegetation phenology in temperate China

Liu

Zeng

et al. 2015

Global Change Biology

349

219

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Autumn phenology plays a critical role in regulating climate-biosphere interactions. However, the climatic drivers of autumn phenology remain unclear. In this study, we applied four methods to estimate the date of the end of the growing season (EOS) across China's temperate biomes based on a 30-year normalized difference vegetation index (NDVI) dataset from Global Inventory Modeling and Mapping Studies (GIMMS). We investigated the relationships of EOS with temperature, precipitation sum, and insolation sum over the preseason periods by computing temporal partial correlation coefficients. The results showed that the EOS date was delayed in temperate China by an average rate at 0.12 ± 0.01 days per year over the time period of 1982-2011. EOS of dry grassland in Inner Mongolia was advanced. Temporal trends of EOS determined across the four methods were similar in sign, but different in magnitude. Consistent with previous studies, we observed positive correlations between temperature and EOS. Interestingly, the sum of precipitation and insolation during the preseason was also associated with EOS, but their effects were biome dependent. For the forest biomes, except for evergreen needle-leaf forests, the EOS dates were positively associated with insolation sum over the preseason, whereas for dry grassland, the precipitation over the preseason was more dominant. Our results confirmed the importance of temperature on phenological processes in autumn, and further suggested that both precipitation and insolation should be considered to improve the performance of autumn phenology models.

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“…The timing of phenological events, such as start of the growing season (SOS) and end of the growing season (EOS), is particularly sensitive to climate change (Chuine et al, 2004;Menzel et al, 2006;Piao et al, 2006Piao et al, , 2015Stocker et al, 2013;Fu et al, 2015b). Previous studies, however, have mainly focused on SOS (Schwartz et al, 2006;Cleland et al, 2007;Piao et al, 2011;Fu et al, 2014b), and investigations of the response of EOS to climate change are much fewer (Miloud & Ali, 2012;Gallinat et al, 2015). Recent studies, however, reported that EOS dynamics may play a critical role in determining the length of vegetation growing season (Garonna et al, 2014), and subsequently regulate terrestrial water, carbon and nutrient cycles (Piao et al, 2007(Piao et al, , 2008; Richardson et al, 2013;Estiarte & Peñuelas, 2015).…”

Section: Introductionmentioning

confidence: 99%

Delayed autumn phenology in the Northern Hemisphere is related to change in both climate and spring phenology

Liu

Zhu

et al. 2016

Global Change Biology

380

257

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The timing of the end of the vegetation growing season (EOS) plays a key role in terrestrial ecosystem carbon and nutrient cycles. Autumn phenology is, however, still poorly understood, and previous studies generally focused on few species or were very limited in scale. In this study, we applied four methods to extract EOS dates from NDVI records between 1982 and 2011 for the Northern Hemisphere, and determined the temporal correlations between EOS and environmental factors (i.e., temperature, precipitation and insolation), as well as the correlation between spring and autumn phenology, using partial correlation analyses. Overall, we observed a trend toward later EOS in ~70% of the pixels in Northern Hemisphere, with a mean rate of 0.18 ± 0.38 days yr . Warming preseason temperature was positively associated with the rate of EOS in most of our study area, except for arid/semi-arid regions, where the precipitation sum played a dominant positive role. Interestingly, increased preseason insolation sum might also lead to a later date of EOS. In addition to the climatic effects on EOS, we found an influence of spring vegetation green-up dates on EOS, albeit biome dependent. Our study, therefore, suggests that both environmental factors and spring phenology should be included in the modeling of EOS to improve the predictions of autumn phenology as well as our understanding of the global carbon and nutrient balances.

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Some Aspects of Leaf Senescence

Cited by 4 publications

References 41 publications

Drought and Its Consequences to Plants – From Individual to Ecosystem

Drought and Its Consequences to Plants – From Individual to Ecosystem

Temperature, precipitation, and insolation effects on autumn vegetation phenology in temperate China

Delayed autumn phenology in the Northern Hemisphere is related to change in both climate and spring phenology

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