Urbanization significantly increases greenhouse gas emissions from a subtropical headwater stream in Southeast China

Dai, Mutan; Xu, Yuanhui; Genjebay, Yegenberdy; Lu, Lingfeng; Wang, Chuan; Yang, Hao; Huang, Changchun; Huang, Tao

doi:10.1016/j.scitotenv.2024.173508

Science of The Total Environment

2024

DOI: 10.1016/j.scitotenv.2024.173508

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Urbanization significantly increases greenhouse gas emissions from a subtropical headwater stream in Southeast China

Mutan Dai,

Yuanhui Xu,

Yegenberdy Genjebay

et al.

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Riverine CH4 and CO2 emissions respond to associated agricultural land use and seasonality

Tang,

Chen,

et al. 2024

Water Science &Amp; Technology

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Recently, agricultural land use has significantly impacted carbon emissions and water quality in adjacent rivers. This study examined the influence of land-use types and seasonality on carbon emissions from agriculture-impacted rivers in Shanghai. Our results showed that the crop farming land-use-associated river (AR) had CH4 and CO2 fluxes 2.68 and 3.47 times higher, respectively, than those in the aquaculture land-use-AR and 2.86 and 2.81 times higher than in the livestock and poultry breeding land-use-AR. Statistical analyses revealed that total nitrogen, ammonia nitrogen, and humification index were significantly correlated with crop farming land-use-AR carbon emissions. Conversely, no clear correlation was found between chemical factors and carbon fluxes in the aquaculture land-use-AR and livestock and poultry breeding land-use-AR due to the complexity of pollution sources. Seasonality significantly influenced CH4 and CO2 fluxes from agriculture-impacted rivers, with carbon fluxes in summer being 3.5 and 2.5 times higher than in winter, respectively. Crop farming land-use-AR carbon fluxes exhibited the highest variability under seasonal influences. This study emphasizes the need for policies to mitigate agricultural land use impacts on river carbon emissions.

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Riverine CH4 and CO2 emissions respond to associated agricultural land use and seasonality

Tang,

Chen,

et al. 2024

Water Science &Amp; Technology

View full text Add to dashboard Cite

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Urbanization significantly increases greenhouse gas emissions from a subtropical headwater stream in Southeast China

Cited by 1 publication

References 66 publications

Riverine CH4 and CO2 emissions respond to associated agricultural land use and seasonality

Riverine CH4 and CO2 emissions respond to associated agricultural land use and seasonality

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