Large influence of atmospheric vapor pressure deficit on ecosystem production efficiency

Lü, Haibo; Qin, Zhangcai; Lin, Shangrong; Chen, Xiuzhi; Chen, Baozhang; He, Bin; Wei, Jing; Yuan, Wenping

doi:10.1038/s41467-022-29009-w

Cited by 59 publications

(42 citation statements)

References 11 publications

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“…We hypothesized that f SM constraints were competing with VPD constraints, confirmed through additional examination of the relationship between f SM and VPD constraints below the critical soil moisture stress threshold of −0.5

{z}_{\mathrm{A}\mathrm{P}\mathrm{I}}

(Section S8, Figures S6, and S7 in Supporting Information ). The fact that VPD was sufficiently constraining supports findings reported elsewhere (Flo et al., 2021; Lu et al., 2022; Novick et al., 2016) about the relative importance of atmospheric moisture demand over soil moisture supply in constraining T in non‐arid biomes.…”

Section: Discussionsupporting

confidence: 86%

“…As another example, the value that various individual environmental constraints provide to a global model is also unclear. For instance, it has been posited that soil moisture (SM) supply may be less containing than atmospheric moisture demand in many biomes (Flo et al., 2021 ; Lu et al., 2022 ; Novick et al., 2016 ), suggesting that a constraint based on atmospheric demand (i.e., as vapor pressure deficit (VPD)) may be more effective than one based on SM for a model that is to be applied at the global scale. Complicating model evaluation further are the different ways of representing key behavior for the same individual stress (or constraint) functions, particularly for SM supply (Verhoef & Egea, 2014 ) and atmospheric moisture demand (C. Lin et al., 2018 ).…”

Section: Introductionmentioning

confidence: 99%

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Simple Models Outperform More Complex Big‐Leaf Models of Daily Transpiration in Forested Biomes

Bright

Miralles

Poyatos

et al. 2022

Geophysical Research Letters

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Transpiration makes up the bulk of total evaporation in forested environments yet remains challenging to predict at landscape‐to‐global scales. We harnessed independent estimates of daily transpiration derived from co‐located sap flow and eddy‐covariance measurement systems and applied the triple collocation technique to evaluate predictions from big leaf models requiring no calibration. In total, four models in 608 unique configurations were evaluated at 21 forested sites spanning a wide diversity of biophysical attributes and environmental backgrounds. We found that simpler models that neither explicitly represented aerodynamic forcing nor canopy conductance achieved higher accuracy and signal‐to‐noise levels when optimally configured (rRMSE = 20%; R2 = 0.89). Irrespective of model type, optimal configurations were those making use of key plant functional type dependent parameters, daily LAI, and constraints based on atmospheric moisture demand over soil moisture supply. Our findings have implications for more informed water resource management based on hydrological modeling and remote sensing.

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{z}_{\mathrm{A}\mathrm{P}\mathrm{I}}

Section: Discussionsupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Simple Models Outperform More Complex Big‐Leaf Models of Daily Transpiration in Forested Biomes

Bright

Miralles

Poyatos

et al. 2022

Geophysical Research Letters

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“…We selected aridity index because indicators defined in terms of water balance are suitable to quantify the effects of water limitation on GPP variations (Gampe et al, 2021;Jiao et al, 2021). Several recent papers highlighted the importance of VPD on land carbon dynamics (Grossiord et al, 2020;Lu et al, 2022;Yuan et al, 2019). However, Liu et al (2020) observed VPD plays a secondary role, than soil moisture, in restraining plant growth.…”

Section: Era5 Datasetmentioning

confidence: 99%

Nonlinear Thermal Responses Outweigh Water Limitation in the Attenuated Effect of Climatic Warming on Photosynthesis in Northern Ecosystems

Yin

Verger

Descals

et al. 2022

Geophysical Research Letters

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Terrestrial plants absorb carbon dioxide (CO 2 ) from the atmosphere by photosynthesis, which is a major mechanism that offsets anthropogenic carbon emissions and mitigates climate change (Anav et al., 2015;Keeling et al., 1996;Running, 2012). Temperature plays a critical role in controlling plant photosynthetic activity and is therefore one of the main determinants of the global carbon balance (Berry & Bjorkman, 1980;Jung et al., 2017). Anthropogenic climatic warming has decreased the limitation of temperature on plant photosynthesis, especially in high-latitude ecosystems (Huang et al., 2019;Keenan & Riley, 2018), and has exerted positive effects on photosynthesis, indicated by the widely reported global greening (C.

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“…Elevated temperatures may also exacerbate carbon starvation and hydraulic failure [45]. A recent study showed that the impacts of VPD-induced atmospheric dryness on ecosystem production are at least equally, if not more important, than soil moisture [46]. There is evidence on the negative relationship between seedling survival and August average maximum temperature [34].…”

Section: Discussionmentioning

confidence: 99%

Effects of Climate Change on Forest Regeneration in Central Spain

Enríquez‐de‐Salamanca

2022

Atmosphere

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The Mediterranean climate has dry and hot summers, which is harsh for plants, especially seedlings. During the 1950s and 1960s, most reforestations carried out in Central Spain, a Mediterranean climate area, were successful, but in recent decades an increasing difficulty in forest regeneration has been observed, often attributed to increased summer drought. This study analyses changes in climatic parameters related to forest regeneration through statistical treatment of meteorological data series from the mid-twentieth century to the present. Simple and multiple regressions and ANOVAs were performed for five parameters, considering annual, summer and extended summer values. Rainfall reduction and prolongation of the summer drought period were not statistically significant. The change that better explains regeneration problems is the increase in temperature, especially in July and August, which was mostly significant between 2002 and 2021. Raising temperatures increase the vapor pressure deficit, exacerbating drought effects and plant mortality. Climate change scenarios point to an increase in temperatures until 2100; thus, the tipping point for natural regeneration of some species could be passed. The most affected species are those at their ecological limit. It is necessary to facilitate the adaptation of these forests to climate change, since their future will depend on the actions carried out today.

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Large influence of atmospheric vapor pressure deficit on ecosystem production efficiency

Cited by 59 publications

References 11 publications

Simple Models Outperform More Complex Big‐Leaf Models of Daily Transpiration in Forested Biomes

Simple Models Outperform More Complex Big‐Leaf Models of Daily Transpiration in Forested Biomes

Nonlinear Thermal Responses Outweigh Water Limitation in the Attenuated Effect of Climatic Warming on Photosynthesis in Northern Ecosystems

Effects of Climate Change on Forest Regeneration in Central Spain

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