Fluxes in CO2 and CH4 and influencing factors at the sediment-water interface in a eutrophic saline lake

Li, Xiangwei; Yu, Ruihong; Wang, Jun; Sun, Hongwei; Lu, Can‐Zhong; Liu, Xinyu; Ren, Xiaobing; Zhuang, Shuai; Lu, Xixi

doi:10.1016/j.jenvman.2023.118314

Cited by 5 publications

(1 citation statement)

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“…Particularly, shallow lakes exhibit a more pronounced sensitivity to temperature. A recent study in Inner Mongolia (in North China) shows that sediment pore water CO 2 concentrations in July were approximately 20 times higher than in January (Li et al., 2023). In lentic water like reservoirs and lakes, however, rising summer temperature could boost algal primary production, leading to reduced p CO 2 that even turns the lentic waters into CO 2 sinks (Xiao et al., 2021).…”

Section: Driving Factors Of Carbon Emissions From Chinese Inland Watersmentioning

confidence: 99%

Carbon Emissions From Chinese Inland Waters: Current Progress and Future Challenges

Yang,

Chen,

et al. 2024

JGR Biogeosciences

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Inland waters are significant emitters of greenhouse gases for the atmosphere and play an important role in the global carbon cycle. With a vast land area in East Asia spanning a broad range of climatic conditions, China has a large number of natural and human‐made water bodies. These inland water systems are of global importance because of their high carbon emission fluxes. Over the past decades, China has experienced unprecedented environmental changes driven by rapid economic development, which have profoundly modified its inland water carbon biogeochemistry and associated emissions. This review focuses on carbon dioxide (CO2) and methane (CH4) emission dynamics from China's inland waters in response to global change. Major drivers of CO2 and CH4 emissions, including aquatic metabolism, hydrological and climatic factors, and prevailing human impacts, are examined. To advance our understanding of carbon emissions from China's inland waters, we further identify several critical knowledge gaps, such as inadequate research in headwater streams and the climate‐sensitive Tibetan Plateau aquatic ecosystems. Furthermore, insufficient understanding of carbon emissions from inland waters undergoing extensive human interventions (e.g., damming, flow regulation, pollution, and farming practices in aquaculture ponds) is highlighted. We suggest that future efforts should be made to better capture the spatiotemporal heterogeneity in dissolved CO2 and CH4 concentrations and fluxes across China as well as their long‐term trends. To overcome uncertainties in carbon sources and current flux estimates, future research to mechanistically understand carbon transport and transformation in Chinese inland waters and their underlying processes is particularly needed.

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Section: Driving Factors Of Carbon Emissions From Chinese Inland Watersmentioning

confidence: 99%