Soil Carbon Dioxide Efflux Responds to Land-Use Changes in the Sub-Urban Regions of Nanjing, China

Lv, Ligang

doi:10.15666/aeer/1403_021032

Cited by 7 publications

(3 citation statements)

References 46 publications

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“…Meanwhile, abundant established studies have confirmed that urban economic growth has a significant impact on carbon emissions [66]. Last but not least, the transformation from agricultural land to urban land would also cause dramatic changes in the soil carbon stock [67]. In short, changes in population, land, and the economy would all contribute to changes in urban carbon emissions and analysis of the aspect is not adequately considered in this paper.…”

Section: Discussionmentioning

confidence: 94%

Spatio-Temporal Analysis of Population-Land-Economic Urbanization and Its Impact on Urban Carbon Emissions in Shandong Province, China

Liu

Jian

Kang

et al. 2022

Land

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New-type urbanization is a dynamic process composed of numerous elements and multiple subsystems. Coordination and coherence of various subsystems are critical for promoting urban-rural integration and regional synergistic development and will have a complicated impact on sustainable development in the trade-off between socioeconomic growth and environmental conservation. This paper theorized the interconnected and mutually influential coupling coordination relationship between population-land-economic urbanization (PLEU) and the mechanism by which this relationship affects urban carbon emissions. The Wavelet Neural Network (WNN), Coupling Coordination Degree model, and econometric model were used to reveal this relationship and mechanism. A total of 17 cities in Shandong Province, China, were used as study subjects for empirical examination. The results show that the level of PLEU in Shandong was significantly improved from 2007 to 2016, but the gap between cities tended to further expand. The 17 cities gradually got rid of the antagonistic disorder issue of the coupling coordination relationship of PLEU from 2007 to 2016, spatially showing the agglomeration characteristics with Qingdao and Jinan as the core, respectively. The influence of the coupling coordination degree of PLEU on urban carbon emissions presents an inverted, U-shaped characteristic, that is, the total urban carbon emissions will first increase and then decrease as the improvement of the coupling coordination relationship of PLEU. China’s new-type urbanization has provided an efficient solution to sustainable development, namely planning and designing at the highest strategic level to establish scientific goals. This new-type urbanization strategy could provide an effective alternative for other emerging countries worldwide, for addressing the challenges to sustainable development.

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Section: Discussionmentioning

confidence: 94%

Spatio-Temporal Analysis of Population-Land-Economic Urbanization and Its Impact on Urban Carbon Emissions in Shandong Province, China

Liu

Jian

Kang

et al. 2022

Land

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“…We identified four broad categories of disturbances relevant to forests, including (1) climate change factors such as warming, increased precipitation, drought and increased atmospheric CO 2 concentration (eCO 2 ), all of which could significantly affect forest C dynamics (Harper et al, 2005; Lu et al, 2017; Noh et al, 2016; Selsted et al, 2012); (2) land‐use change including afforestation, land degradation and conversion of natural forests to plantations, croplands or grasslands. Land‐use change is the second‐largest source of anthropogenic CO 2 emissions and directly releases about 1.6 Gt C per year to the atmosphere (Foley et al, 2005; Houghton, 1995; Lv et al, 2016; Peng et al, 2008); (3) forest management practices, including site preparation methods such as mounding used to prepare a site for planting, can cause soil mixing and change the rate of organic matter input (e.g. changes in the amount of litterfall due to clearing practices); those disturbances directly influence FCO 2 (Mallik & Hu, 1997; Mjofors et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Meta‐analysis shows forest soil CO₂ effluxes are dependent on the disturbance regime and biome type

Akande

Huang

et al. 2023

Ecology Letters

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Forest soil CO2 efflux (FCO2) is a crucial process in global carbon cycling; however, how FCO2 responds to disturbance regimes in different forest biomes is poorly understood. We quantified the effects of disturbance regimes on FCO2 across boreal, temperate, tropical and Mediterranean forests based on 1240 observations from 380 studies. Globally, climatic perturbations such as elevated CO2 concentration, warming and increased precipitation increase FCO2 by 13% to 25%. FCO2 is increased by forest conversion to grassland and elevated carbon input by forest management practices but reduced by decreased carbon input, fire and acid rain. Disturbance also changes soil temperature and water content, which in turn affect the direction and magnitude of disturbance influences on FCO2. FCO2 is disturbance‐ and biome‐type dependent and such effects should be incorporated into earth system models to improve the projection of the feedback between the terrestrial C cycle and climate change.

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“…Soil respiration has been shown to vary significantly with land-use change (Wang et al 2008, Rong et al 2015, Xue and Tang 2017. This has been ascribed to a number of factors, including modifications in soil microclimate (Liu et al 2016, Lv et al 2016, or alterations in biotic (Iqbal et al 2010, Nazaries et al 2015, Wang et al 2018) and abiotic factors (Zhang et al 2015, Roychand 2017, Wang et al 2018, as well as land-use change years (Wang et al 2015b). Importantly, however, these factors generally do not act alone and there is a complex interaction between them (Li et al 2020a), so the outcome is not always clear.…”

Section: Introductionmentioning

confidence: 99%

Topography modifies the effect of land‐use change on soil respiration: A meta‐analysis

et al. 2021

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Soil respiration is controlled by land‐use changes associated with cropland vegetation restoration, and this can vary with topography, although the magnitude of this effect and the underlying mechanisms are still unclear. We synthesized 69 recently published papers from China to explore the influence of topography‐related changes in land use on soil respiration where croplands were converted into orchards (abbreviated as C‐O), grasslands (abbreviated as C‐G), or woodlands (abbreviated as C‐W). Our results showed that not only did land‐use change have a significant influence on soil respiration, but this varied with topography. While C‐O resulted in a decrease in soil respiration by, on average, 3.1%, both the magnitude and sign of the change varied with topography, with an 8.2% increase for flat areas and a 14.7% decrease for slopes. For the C‐G conversions, soil respiration increased, on average, by 21.4%, with a 19.5% and a 24.3% increase for flat and slope topography, respectively. For C‐W, soil respiration increased, on average, by 28.0%, with only a 1.6% increase for flat areas, but a 39.9% increase for slopes. Soil temperature, soil moisture, root biomass, soil organic carbon (SOC), soil microbial biomass carbon (MBC), soil carbon‐to‐nitrogen ratio (C:N ratio), and soil density also varied with topography, with larger changes for slopes than for flat topography. Increases in soil respiration associated with different topography were closely related to changes in soil temperature, SOC, MBC, and root biomass (P < 0.05), but were not correlated with changes in soil moisture, C:N ratio, or soil density (P > 0.05). The contribution of different drivers to the change in soil respiration under different topographical conditions showed a trend of SOC > root biomass > MBC > soil temperature. Based on these results, topography‐related variations in soil respiration need to be accounted for when quantifying the impact of land‐use change in C budgets.

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Soil Carbon Dioxide Efflux Responds to Land-Use Changes in the Sub-Urban Regions of Nanjing, China

Cited by 7 publications

References 46 publications

Spatio-Temporal Analysis of Population-Land-Economic Urbanization and Its Impact on Urban Carbon Emissions in Shandong Province, China

Spatio-Temporal Analysis of Population-Land-Economic Urbanization and Its Impact on Urban Carbon Emissions in Shandong Province, China

Meta‐analysis shows forest soil CO₂ effluxes are dependent on the disturbance regime and biome type

Topography modifies the effect of land‐use change on soil respiration: A meta‐analysis

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Soil Carbon Dioxide Efflux Responds to Land-Use Changes in the Sub-Urban Regions of Nanjing, China

Cited by 7 publications

References 46 publications

Spatio-Temporal Analysis of Population-Land-Economic Urbanization and Its Impact on Urban Carbon Emissions in Shandong Province, China

Spatio-Temporal Analysis of Population-Land-Economic Urbanization and Its Impact on Urban Carbon Emissions in Shandong Province, China

Meta‐analysis shows forest soil CO2 effluxes are dependent on the disturbance regime and biome type

Topography modifies the effect of land‐use change on soil respiration: A meta‐analysis

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Meta‐analysis shows forest soil CO₂ effluxes are dependent on the disturbance regime and biome type