Effect of tidal hydrology on soil anaerobic CO2 production of freshwater marsh in the Yellow River estuary wetland, China

Sang, Luan; Li, Xue; Sun, Dandan; Yang, Yunfei; Yang, Jing; Wang, Zhikang; Li, Yunzhao; Zhou, Di; Ning, Kai; Guan, Bo; Wang, Xuehong; Yu, Junbao

doi:10.1016/j.ecolind.2022.109747

Cited by 6 publications

(2 citation statements)

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“…On the other hand, the noticeable carbon dioxide levels during the study period were in AL-Gherai'at and AL-Shuhda'a bridge, and the reason is due to anthropogenic activities such as the waste coming from the Baghdad Medical City hospital towards the AL-Shuhda'a bridge area, as well as different type of human activities like a discharge of sewage to the Tigris River without treatment near Al-Wazir Mosque, and the construction process of a bridge in AL-Gherai'at region that led to an increase in nutrients concentration e.g., phosphorus 39 , which in turn causes the bacterial stimulation DOCmineralization to CO2 40 . Our results showed that the pH changes significantly following the change in carbon dioxide, where CO2 is significant in controlling pH; pH falls as CO2 rises and vice versa [41][42][43] . Water temperature is an essential abiotic factor that drives a variety of characteristics of an organism's life, including respiration, fertility, growth, and nutrition, as well as its behavior and eventual survival.…”

Section: Resultsmentioning

confidence: 61%

الكربون العضوي المذاب، ليس الاحترار، يقود توافر ثاني أكسيد الكربون في الأنهار الداخلية: حالة دراسية لنهر دجلة

Kadhim,

Hamdan

2024

Baghdad Sci.J

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Rivers became supersaturated with carbon dioxide (CO2), so they play an essential role in the global carbon budgets. To increase our understanding of the source of CO2 availability in rivers, we studied the role of climate-changed drivers of CO2 availability, which are ‘‘dissolved organic carbon (DOC), and warming’’. We sampled 45 locations of 3 parts within the Tigris River in Baghdad during autumn and winter. The results showed that all the studied variables (water temperature, pH, DOC, CO2) changed over time. The variations in CO2 availability are associated with changes in DOC concentration, not with water temperature. Overall, our results suggest that elevated CO2 in rivers could result from increased DOC inputs. Therefore, we can conclude that increased DOC concentration in rivers was required for microbial respiration and photo-mineralization, which are the primary sources of CO2 in river ecosystems.

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Section: Resultsmentioning

confidence: 61%

الكربون العضوي المذاب، ليس الاحترار، يقود توافر ثاني أكسيد الكربون في الأنهار الداخلية: حالة دراسية لنهر دجلة

Kadhim,

Hamdan

2024

Baghdad Sci.J

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“…Temperature sensitivity (Q 10 ) is crucial to assess the impact of warming on soil organic carbon and to determine the gas emission rate at 10 • C warming. In mountainous ecosystems, Q 10 may be regulated by the elevation and vegetation type [10][11][12]. Warming can potentially alter soil properties, such as nutrition, texture, and mineral content, significantly affecting the quantity and quality of organic carbon.…”

Section: Introductionmentioning

confidence: 99%

Vertical Variation in Temperature Sensitivity of Soil Organic Carbon Mineralization in Changbai Mountain, China: A Microcosm Study

Liu,

Zhang,

et al. 2024

Sustainability

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Global warming may have a complex effect on soil carbon mineralization across mountain elevations. Elevational zonation governs the soil natural composition of mountain ecosystems due to different temperature conditions. Understanding the response of carbon mineralization to climate change, particularly the temperature sensitivity (Q10), is crucial for assessing the effects within mountain vertical zones. Despite this, the spatial variation and influencing factors of organic carbon mineralization at these zones remain unclear. We conducted a microcosm study in Changbai Mountain, Northeast China, to examine the response of soil carbon mineralization to warming across six different elevations (1000, 1400, 1600, 1800, 2000, and 2200 m). The soil samples were incubated at 5 °C, 15 °C, and 25 °C for 71 days. The results showed a significant elevation-dependent increase in the rate of soil organic carbon mineralization (Cmin), with the birch forest exhibiting the highest values. Q10 varied across elevations, with the highest value (1.57) in the coniferous forest (1400 m), and the lowest (1.32) in the tundra (2200 m). The potential of organic carbon mineralization (C0) demonstrated an increasing trend from 5 °C to 25 °C across the six elevations. Elevation and soil properties, especially pH, bulk density (BD), and dissolved organic carbon (DOC), emerged as critical factors influencing organic carbon mineralization; notably, elevation played a crucial role. In summary, our findings highlight the common regulatory role of elevation and soil properties in soil carbon mineralization dynamics within the vertical zones. Future research should pay attention to the distinctive features of vegetation zones to analyze how mountain carbon pool function responds to global climate change.

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Distributions and Influence Factors of Organic Carbon in Coastal Area of the Yangtze River Estuary, China

Chen,

Lou,

Yang

et al. 2024

Estuaries and Coasts

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Effect of tidal hydrology on soil anaerobic CO2 production of freshwater marsh in the Yellow River estuary wetland, China

Cited by 6 publications

References 60 publications

الكربون العضوي المذاب، ليس الاحترار، يقود توافر ثاني أكسيد الكربون في الأنهار الداخلية: حالة دراسية لنهر دجلة

الكربون العضوي المذاب، ليس الاحترار، يقود توافر ثاني أكسيد الكربون في الأنهار الداخلية: حالة دراسية لنهر دجلة

Vertical Variation in Temperature Sensitivity of Soil Organic Carbon Mineralization in Changbai Mountain, China: A Microcosm Study

Distributions and Influence Factors of Organic Carbon in Coastal Area of the Yangtze River Estuary, China

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