Climatic sensitivity of the CO2 flux in a cutaway boreal peatland cultivated with a perennial bioenergy crop (Phalaris arundinaceae, L.): Beyond diplotelmic modeling

Gong, Jinnan; Kellomäki, Seppo; Shurpali, Narasinha J.; Wang, Kaiyun; Hyvönen, Niina; Zhang, Chao; Zhong, Qicheng; Martikainen, Pertti J.

doi:10.1016/j.agrformet.2014.08.011

Cited by 5 publications

(13 citation statements)

References 63 publications

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“…1a), Ningxia, China (see Wang et al, 2014Wang et al, , 2015. The long-term (1954The long-term ( -2004 mean temperature is 8.1 • C, and the mean annual precipitation is 287 mm, most of which falls from July to September (Jia et al, 2014).…”

Section: Model Overviewmentioning

confidence: 99%

“…The abundance of mineral N (i.e. NH + 4 and NO − 3 ) regulates the growth of microbial biomass and r E following Smith et al (2010) and Gong et al (2014). Key processes governing the dynamics of mineral N pools included nitrification-denitrification (Smith et al, 2010), solvent transport with water flows and the N uptake by the root system.…”

Section: Modelling Approachesmentioning

confidence: 99%

“…Rainfall was measured with a tipping-bucket rain gauge (TE525WS, Campbell Scientific Inc., USA) mounted at a nearby site (1 km away; see B. Wang et al, 2014). The seasonal trends of the measured T a and P can be found in Jia et al (2016).…”

Section: Micrometeorological and Soil Co 2 Efflux Measurementsmentioning

confidence: 99%

“…To simulate R s , we simplified the pool-type model of Gong et al (2013Gong et al ( , 2014, which originated from Smith et al (2010) for simulating coupled C and N cycling in organic soils. The SOM pool in each soil layer was divided into debris (M deb , i.e.…”

Section: Modelling Approachesmentioning

confidence: 99%

“…Soil CO 2 flux of dryland ecosystems is also widely interpreted using temperature-response functions modified by other environmental constraints, e.g. soil water content, abundance of substrates and microbial activities (Curiel Yuste et al, 2007; W. Wang et al, 2014;B. Wang et al, 2014B.…”

Section: Introductionmentioning

confidence: 99%

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Modelling the diurnal and seasonal dynamics of soil CO<sub>2</sub> exchange in a semiarid ecosystem with high plant–interspace heterogeneity

et al. 2018

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Abstract. We used process-based modelling to investigate the roles of carbon-flux (C-flux) components and plantinterspace heterogeneities in regulating soil CO 2 exchanges (F S ) in a dryland ecosystem with sparse vegetation. To simulate the diurnal and seasonal dynamics of F S , the modelling considered simultaneously the CO 2 production, transport and surface exchanges (e.g. biocrust photosynthesis, respiration and photodegradation). The model was parameterized and validated with multivariate data measured during the years 2013-2014 in a semiarid shrubland ecosystem in Yanchi, northwestern China. The model simulation showed that soil rewetting could enhance CO 2 dissolution and delay the emission of CO 2 produced from rooting zone. In addition, an ineligible fraction of respired CO 2 might be removed from soil volumes under respiration chambers by lateral water flows and root uptakes. During rewetting, the lichen-crusted soil could shift temporally from net CO 2 source to sink due to the activated photosynthesis of biocrust but the restricted CO 2 emissions from subsoil. The presence of plant cover could decrease the root-zone CO 2 production and biocrust C sequestration but increase the temperature sensitivities of these fluxes. On the other hand, the sensitivities of root-zone emissions to water content were lower under canopy, which may be due to the advection of water flows from the interspace to canopy. To conclude, the complexity and plant-interspace heterogeneities of soil C processes should be carefully considered to extrapolate findings from chamber to ecosystem scales and to predict the ecosystem responses to climate change and extreme climatic events. Our model can serve as a useful tool to simulate the soil CO 2 efflux dynamics in dryland ecosystems.

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Section: Model Overviewmentioning

confidence: 99%

Section: Modelling Approachesmentioning

confidence: 99%

Section: Micrometeorological and Soil Co 2 Efflux Measurementsmentioning

confidence: 99%

Section: Modelling Approachesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Modelling the diurnal and seasonal dynamics of soil CO<sub>2</sub> exchange in a semiarid ecosystem with high plant–interspace heterogeneity

et al. 2018

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Peatland dynamics: A review of process-based models and approaches

Mozafari

Bruen

Donohue

et al. 2023

Science of The Total Environment

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Overriding water table control on managed peatland greenhouse gas emissions

Evans

Peacock

Baird

et al. 2021

Nature

243

175

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Climatic sensitivity of the CO2 flux in a cutaway boreal peatland cultivated with a perennial bioenergy crop (Phalaris arundinaceae, L.): Beyond diplotelmic modeling

Cited by 5 publications

References 63 publications

Modelling the diurnal and seasonal dynamics of soil CO<sub>2</sub> exchange in a semiarid ecosystem with high plant–interspace heterogeneity

Modelling the diurnal and seasonal dynamics of soil CO<sub>2</sub> exchange in a semiarid ecosystem with high plant–interspace heterogeneity

Peatland dynamics: A review of process-based models and approaches

Overriding water table control on managed peatland greenhouse gas emissions

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Climatic sensitivity of the CO2 flux in a cutaway boreal peatland cultivated with a perennial bioenergy crop (Phalaris arundinaceae, L.): Beyond diplotelmic modeling

Cited by 5 publications

References 63 publications

Modelling the diurnal and seasonal dynamics of soil CO&lt;sub&gt;2&lt;/sub&gt; exchange in a semiarid ecosystem with high plant–interspace heterogeneity

Modelling the diurnal and seasonal dynamics of soil CO&lt;sub&gt;2&lt;/sub&gt; exchange in a semiarid ecosystem with high plant–interspace heterogeneity

Peatland dynamics: A review of process-based models and approaches

Overriding water table control on managed peatland greenhouse gas emissions

Contact Info

Product

Resources

About

Modelling the diurnal and seasonal dynamics of soil CO<sub>2</sub> exchange in a semiarid ecosystem with high plant–interspace heterogeneity

Modelling the diurnal and seasonal dynamics of soil CO<sub>2</sub> exchange in a semiarid ecosystem with high plant–interspace heterogeneity