Vapor pressure deficit constrains transpiration and photosynthesis in holm oak: A comparison of three methods during summer drought.

Sancho‐Knapik, Domingo; Mendoza-Herrer, Óscar; Alonso-Forn, David; Saz, Miguel Ángel; Martín-Sánchez, Rubén; Silva, José Víctor dos Santos; Ogée, Jérôme; Peguero‐Pina, José Javier; Gil‐Pelegrín, Eustaquio; Ferrio, Juan Pedro

doi:10.1016/j.agrformet.2022.109218

Cited by 17 publications

(11 citation statements)

References 60 publications

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“…However, during the 13th Five‐Year Plan period, with the development of dryland agricultural science and technology, the PUE of drylands has been greatly improved (Xiao et al, 2023; Zhu et al, 2022). Woodlands is located in humid areas with abundant precipitation, and most of them are tree vegetation with large continuous area and high degree of depression, with strong photosynthesis, which dissipates a large amount of water, so the PUE shows a high level (Sancho‐Knapik et al, 2022). Shrublands are the main vegetation types in the ecological restoration project in the LP, and the poor environment makes its leaf area index lower, but shrublands show high tolerance to drought stress, so PUE is at a high level.…”

Section: Discussionmentioning

confidence: 99%

Distribution, trends and drivers of precipitation use efficiency in the loess plateau

Shi,

Zhang,

Ding

et al. 2024

Hydrological Processes

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Against the background of climate change, the global carbon and water cycle has undergone significant changes, and it is of great significance to explore the interrelationships of the carbon and water cycles in different regions to cope with future climate change. In this study, based on gross primary productivity (GPP) and precipitation (PRE) data, the precipitation use efficiency (PUE) of the Loess Plateau (LP) was calculated, and the Sen trend analysis and Mann‐Kendall test were used to analyse the temporal and spatial variation characteristics of PUE, as well as the first‐order difference method was used to derive the relative contributions to quantify the impact of vegetation growth and meteorological factors on PUE. The results show that (1) from 2001 to 2018, the spatial distribution pattern of vegetation PUE exhibited an increasing trend from northwest to southeast. On the time scale, the multi‐year average value of PUE was 1.17 gC m−2 mm−1, showing an overall upward trend. Among the different land cover types, paddy fields had the highest PUE level, and sparse grassland had the lowest; (2) LAI had the highest relative contribution to vegetation PUE, followed by temperature (Temp), net radiation of the ground surface (RN), specific humidity (Shum), and wind speed (WS). LAI contributes positively to 88.9% of the area. RN positively influences high‐altitude areas, while Shum had a larger area with a negative contribution. The contribution of Temp increases from northwest to southeast, and WS has balanced positive and negative contributions; (3) LAI is the dominant factor for the spatial and temporal variation of PUE in the LP, and the size of the areas where different meteorological factors dominate the changes of PUE are as follows: WS > Shum>RN > Temp. At high altitudes, the dominant meteorological driver is WS, while at low altitudes, the dominant climate driver is Shum. This study is of guiding significance for the ecological restoration and management of the LP, and it can also provide a scientific basis for the improvement of ecosystems and the sustainable management of water resources in the context of global climate change.

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Section: Discussionmentioning

confidence: 99%

Distribution, trends and drivers of precipitation use efficiency in the loess plateau

Shi,

Zhang,

Ding

et al. 2024

Hydrological Processes

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“…The elucidation and quantification of a specific healing mechanism of forest environments can offer a powerful tool to direct the widespread efforts to plan and optimize forest therapy trails, often relying on the prediction of MT concentration based on plant species and meteorological variables [31,32,34,76].…”

Section: Discussionmentioning

confidence: 99%

Effects of Plant-Emitted Monoterpenes on Anxiety: A Propensity-Matched Observational Cohort Study

Donelli¹,

Meneguzzo²,

Antonelli³

et al. 2022

Preprint

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Immersive experiences in green areas and particularly in forests have long been known to produce beneficial effects for human health. However, the exact determinants and mechanisms leading to healthy outcomes remain to be elucidated. The purpose of this study was to investigate whether inhaling plant-emitted biogenic volatile compounds, namely monoterpenes (MTs), can produce specific effects on anxiety. Data from 505 subjects participating in 39 structured forest therapy sessions in different Italian sites, were collected. Monoterpenes air concentration was measured at each site. STAI State questionnaires were administered before and after the sessions as a measure of anxiety. A propensity score matching analysis was then performed, considering an above-average exposure to inhalable air MTs as the treatment: the estimated effect was -1.28 STAI-S points (95% C.I. -2.51 to -0.06, p = 0.04), indicating that the average effect of exposure to high MT air concentrations during forest therapy sessions is to decrease anxiety.

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“…C 4 crops usually reach greater yields than C 3 crops when grown in regions with low precipitation. Many previous studies investigated the effects of drought and dry air on steady‐state photosynthesis in C 3 and C 4 plants (Leakey et al 2006; Ibrahim et al 2008; Carmo‐Silva et al 2010; Vilagrosa et al 2012; Zivcak et al 2013; Sancho‐Knapik et al 2022), but it is unclear whether C 4 crops have higher sunfleck utilization efficiency in dry air than C 3 crops.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, g s imposes a significant limitation on A N under FL in some C 3 plants (Kaiser et al 2020; Kimura et al 2020; Eyland et al 2021; Liu et al 2022). Under high VPD conditions, g s usually declines to prevent hydraulic failure, leading to subsequent detrimental effects on steady‐state A N , growth and productivity (Shirke and Pathre 2004; Zhang et al 2005; Peguero‐Pina et al 2016; Qiu et al 2017; Merilo et al 2018; Grossiord et al 2020; Inoue et al 2021; Sancho‐Knapik et al 2022). Furthermore, a high VPD slows down the induction rate of g s in tomato (Kaiser et al 2017, 2020).…”

Section: Introductionmentioning

confidence: 99%

Differential impact of decreasing relative humidity on photosynthesis under fluctuating light between maize and tomato

Shi,

Wang,

et al. 2024

Physiologia Plantarum

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Photosynthetic CO2 assimilation (AN) under fluctuating light (FL) plays a critical role in plant growth and crop yield. C4 crops usually reach greater yields than C3 crops when grown in regions with low relative humidity, which might be partly due to the CO2 concentration mechanism and higher AN under FL of C4 crops. To test this hypothesis, we measured gas exchange and chlorophyll fluorescence under different changing frequencies of FL at contrasting relative air humidity (60% and 15%) for leaves of maize (Zea mays, C4) and tomato (Solanum lycopersicum, C3). In general, a more rapid changing frequency of FL would cause a larger loss in AN during shade‐sun transitions, with 20–38% in maize and 16–52% in tomato. Low relative humidity induced a larger decrease of stomatal conductance (gs) under FL in tomato than in maize, leading to a much stronger loss in AN in tomato than in maize. After transition from low to high light, AN of maize was mainly limited by gs with negligible non‐stomatal limitation, and the stomatal limitation was slightly affected by relative humidity. By comparison, low relative humidity significantly increased the stomatal limitation of AN in tomato but hardly affected non‐stomatal limitation. These results highlight the differential impact of decreasing relative humidity on dynamic photosynthesis and productivity between C3 and C4 crops.

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Vapor pressure deficit constrains transpiration and photosynthesis in holm oak: A comparison of three methods during summer drought.

Cited by 17 publications

References 60 publications

Distribution, trends and drivers of precipitation use efficiency in the loess plateau

Distribution, trends and drivers of precipitation use efficiency in the loess plateau

Effects of Plant-Emitted Monoterpenes on Anxiety: A Propensity-Matched Observational Cohort Study

Differential impact of decreasing relative humidity on photosynthesis under fluctuating light between maize and tomato

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