Effects of anthropogenic disturbances on the carbon sink function of Yangtze River estuary wetlands: A review of performance, process, and mechanism

Mei, Wenxuan; Dong, Haoyu; Qian, Liwei; Yan, Jianfang; Hu, Yu; Wang, Lei

doi:10.1016/j.ecolind.2024.111643

Cited by 3 publications

(1 citation statement)

References 148 publications

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“…As the soil depth increased, the SOC content tended to gradually decrease (Figure 6, Table 2), with the SOC content in the 0-20 cm soil layer notably surpassing that in other profiles, constituting over 50% of the total SOC in the 0-50 cm soil layer (Figure 6). On the one hand, this phenomenon arises because carbon inputs from the decomposition of aboveground plant residues outweigh those from belowground root decomposition and secretions in emerging salt marsh wetlands [48][49][50]. On the other hand, a significant negative correlation was observed between soil salinity and respiration at depths of 30-50 cm (p < 0.001, Figure 7).…”

Section: Discussionmentioning

confidence: 99%

Chronosequence Changes of Soil Organic Carbon in Salt Marshes under Artificial Intervention: A Case Study of Hengsha Island in the Yangtze Estuary

Zhang,

Sha,

et al. 2024

Sustainability

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Land formation seriously disturbs coastal salt marsh wetland ecosystems, while its influences on soil organic carbon (SOC) under chronosequences remain unclear. In this study, the impacts of the land formation time (from one to fourteen years) and soil properties on the chronosequences changes of SOC in the nascent wetland of Hengsha Island were investigated. The study results showed the following. (1) As the land-formation time extended, the SOC experienced a significant increase, tripling after a period of 14 years. The changes in SOC occurred mainly in the surface layer but not in the deep soil layer. Specifically, the surface layer’s average SOC reached 5.52 g·kg−1, markedly higher than 3.17 g·kg−1 in the deeper layer. (2) Spearman correlation analysis revealed that the ammonium nitrogen (NH4+-N), aboveground biomass (AGB), and soil water content (SWC) were positively correlated with the SOC. Methane emissions (CH4) and SOC exhibited a negative correlation. (3) The structural equation model (SEM) illustrated that the duration of soil deformation directly impacted the vegetation growth and affected the distribution characteristics of the SOC by modifying the soil environmental conditions. Changes in SOC following land formation influenced the rapid succession of soil properties and vegetation, with the modification of carbon sinks in the ecosystems.

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Section: Discussionmentioning

confidence: 99%

Chronosequence Changes of Soil Organic Carbon in Salt Marshes under Artificial Intervention: A Case Study of Hengsha Island in the Yangtze Estuary

Zhang,

Sha,

et al. 2024

Sustainability

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Spatio-temporal dynamics of net primary productivity and the economic value of Spartina alterniflora in the coastal regions of China

Wei,

Zhu,

Wang

2024

Science of The Total Environment

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Investigating the Dynamic Change and Driving Force of Vegetation Carbon Sink in Taihang Mountain, China

Qu,

Jian,

Chen

et al. 2024

Land

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Vegetation plays an important role in absorbing carbon dioxide and accelerating the achievement of carbon neutrality. As the ecological barrier of North China, the Taihang Mountains are pivotal to the ecological construction project of China. Nevertheless, the dynamic development of the vegetation carbon sink in the region and the impact factors on the sink have not been systematically evaluated. This study employed a comprehensive approach, utilising remote sensing technology and meteorological and topographic data, in conjunction with the net ecosystem productivity (NEP) estimation model to reveal the characteristics of vegetation carbon sinks in the Taihang Mountain, and then revealed the dynamics evolution of the NEP and the inter-annual trend by using Theil–Sen Median slope estimation, the Mann–Kendall test, and the coefficient of dissociation and analysed the driving roles of the influencing factors by using the parameter optimal geographic detector. Our findings suggest that the NEP in the Taihang Mountain area has a clear growth trend in time, the average value of NEP in the Taihang Mountain area is 289 gC-m−2-a−1 from 2000 to 2022, and the spatial distribution shows the characteristics of high in the northeast and low in the middle and west, with a gradual increase from the northeast to the southwest; the areas with high fluctuation of NEP are mainly distributed in the areas around some cities that are susceptible to the interference of natural or anthropogenic factors. The vegetation carbon sinks in the Taihang Mountains are influenced by a variety of natural factors, among which the explanatory power of each natural factor is as follows: DEM (0.174) > temperature (0.148) > precipitation (0.026) > slope (0.017) > slope direction (0.003). The natural factor DEM had the strongest explanatory power for NEP changes, and the two-by-two effects of the natural factors on vegetation carbon sinks were all significantly stronger than the effects of a single factor, in which the interaction between DEM and precipitation had the strongest explanatory power; distinguishing from climate change factors, the contribution of anthropogenic activities to NEP changes in more than 90% of the area of the Taihang Mountainous Region was more than 60%, and the driving force of anthropogenic factors on NEP changes in the Taihang Mountainous Region was significantly stronger than that of natural climate change. The contribution of anthropogenic factors to NEP changes in the Taihang Mountains was significantly stronger than that of natural climate change. The results of this study can not only provide a reference for carbon reduction and sink increase and ecological restoration projects in the Taihang Mountains but also benefit the research paradigm of vegetation carbon sequestration in other regions.

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Effects of anthropogenic disturbances on the carbon sink function of Yangtze River estuary wetlands: A review of performance, process, and mechanism

Cited by 3 publications

References 148 publications

Chronosequence Changes of Soil Organic Carbon in Salt Marshes under Artificial Intervention: A Case Study of Hengsha Island in the Yangtze Estuary

Chronosequence Changes of Soil Organic Carbon in Salt Marshes under Artificial Intervention: A Case Study of Hengsha Island in the Yangtze Estuary

Spatio-temporal dynamics of net primary productivity and the economic value of Spartina alterniflora in the coastal regions of China

Investigating the Dynamic Change and Driving Force of Vegetation Carbon Sink in Taihang Mountain, China

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