A stomatal optimization approach improves the estimation of carbon assimilation from sap flow measurements

Hu, Yukun; Duman, Tomer; Vanderklein, Dirk; Zhao, Ping; Schäfer, Karina V. R.

doi:10.1016/j.agrformet.2019.107735

Cited by 6 publications

(1 citation statement)

References 75 publications

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“…In the process of canopy water vapor output, the resistance of water vapor inside the canopy when it diffused outward through the stomatal layer and boundary layer is called canopy resistance, which was usually quantified by canopy conductivity (Wang et al, 2021). Canopy conductance as an indicator of stomatal regulation at ecosystem scale had been widely concerned (De Boer et al, 2011;Deng and Ding, 2015;Bai et al, 2017), and dynamic changes reflected stomatal behavior and water regulation mode of plants, which was the overall index of material and energy exchange in the plant canopy (Hu et al, 2019), and had been widely used in the study of plant stomatal behavior regulation (Chen et al, 2021).…”

Section: Introduction 1overview Of Canopy Conductancementioning

confidence: 99%

Characteristics of Canopy Conductance and Environmental Driving Mechanism in Three Monsoon Climate Regions of China

Jia

Yan

et al. 2022

Front. Environ. Sci.

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Canopy conductance was an important index to measure the process of water exchange between canopy and atmosphere interface of forest ecosystem, as well as to judge the status of water use or the degree of drought stress. Therefore, the accurate estimation of forest canopy conductance was of great significance for the research of water-use efficiency. In the past, canopy conductance was measured on vegetation types in a single-point region, but there were few studies on systematic comparison in different climate zones. Based on the data sets of EC flux and conventional meteorological elements from the eddy covariance (EC) flux observation station during 2003–2010 in three typical climate zones (temperate continental monsoon climate zone, south subtropical monsoon climate zone, and mid-subtropical monsoon climate zone), Penman-Monteith model was used to calculate forest canopy conductance in different climate regions and analyze the dynamic changes of canopy conductance in different time scales. At the same time, combined with environmental factors including temperature, net radiation, soil water content, and vapor pressure deficit to explore their driving ability on the canopy conductivity of forest ecosystem in different climate regions, we finally explored the mechanism driving the canopy conductivity of forest ecosystem under different climates. The results showed that: 1) the driving ability of environmental factors in different climate regions to the canopy conductance was different, and the contribution rate of soil water content to the canopy conductance in subtropical monsoon climate zone was the largest. It was 36.01%, and the contribution rate of vapor pressure deficit to the canopy conductance in mid-subtropical monsoon climate region was the largest. It was 29.4% and the contribution rate of temperature to the canopy conductance in temperate monsoon climate region was the largest; it was 28.14%. 2). Temperature was an important factor limiting and driving canopy conductance, and there was a synergistic effect between water and temperature, which jointly drove the change in canopy conductance. 3) Environmental factors in different climate regions had threshold for the synergistic driving effect of canopy conductance. When the factors were within the appropriate threshold, the factors had a strong promoting effect on canopy conductance.

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Section: Introduction 1overview Of Canopy Conductancementioning

confidence: 99%

Characteristics of Canopy Conductance and Environmental Driving Mechanism in Three Monsoon Climate Regions of China

Jia

Yan

et al. 2022

Front. Environ. Sci.

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Impacts of Canopy and Understory Nitrogen Additions on Stomatal Conductance and Carbon Assimilation of Dominant Tree Species in a Temperate Broadleaved Deciduous Forest

Schäfer

Zhu

et al. 2021

Ecosystems

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Effects of elevated CO2 on hydraulic performance and carbon assimilation of Schefflera arboricola

Lau

et al. 2022

J Soils Sediments

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A stomatal optimization approach improves the estimation of carbon assimilation from sap flow measurements

Cited by 6 publications

References 75 publications

Characteristics of Canopy Conductance and Environmental Driving Mechanism in Three Monsoon Climate Regions of China

Characteristics of Canopy Conductance and Environmental Driving Mechanism in Three Monsoon Climate Regions of China

Impacts of Canopy and Understory Nitrogen Additions on Stomatal Conductance and Carbon Assimilation of Dominant Tree Species in a Temperate Broadleaved Deciduous Forest

Effects of elevated CO2 on hydraulic performance and carbon assimilation of Schefflera arboricola

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