Assessing carbon greenhouse gas emissions from aquaculture in China based on aquaculture system types, species, environmental conditions and management practices

Zhang, Yifei; Tang, Kam W.; Yang, Ping; Yang, Hong; Tong, Chuan; Song, Changchun; Tan, Lishan; Zhao, Guanglei; Zhou, Xudong; Sun, Dongyao

doi:10.1016/j.agee.2022.108110

Cited by 38 publications

(8 citation statements)

References 77 publications

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“…The CH 4 fluxes from aquaculture was acquired from two latest comprehensive studies (Dong et al., 2023; Zhang, Tang, et al., 2022). Zhang, Tang, et al.…”

Section: Methodsmentioning

confidence: 99%

“…The CH 4 fluxes from aquaculture was acquired from two latest comprehensive studies (Dong et al, 2023;Zhang, Tang, et al, 2022). Zhang, Tang, et al (2022) presented a nationwide metadata analysis from 132 aquaculture sites in China based on 62 published papers. Four land-based aquaculture systems were considered, including the coastal wetland reclamation system (CWRS), inland pond system (IPS), lake/reservoir system (LRS) and ricefield system (RFS).…”

Section: Agriculturementioning

confidence: 99%

Section: Agriculturementioning

confidence: 99%

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The Greenhouse Gas Budget of Terrestrial Ecosystems in East Asia Since 2000

Wang,

Gao,

Jeong

et al. 2024

Global Biogeochemical Cycles

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East Asia (China, Japan, Koreas, and Mongolia) has been the world's economic engine over at least the past two decades, exhibiting a rapid increase in fossil fuel emissions of greenhouse gases (GHGs) and has expressed the recent ambition to achieve climate neutrality by mid‐century. However, the GHG balance of its terrestrial ecosystems remains poorly constrained. Here, we present a synthesis of the three most important long‐lived greenhouse gases (CO2, CH4, and N2O) budgets over East Asia during the decades of 2000s and 2010s, following a dual constraint approach. We estimate that terrestrial ecosystems in East Asia is close to neutrality of GHGs, with a magnitude of between −46.3 ± 505.9 Tg CO2eq yr−1 (the top‐down approach) and −36.1 ± 207.1 Tg CO2eq yr−1 (the bottom‐up approach) during 2000–2019. This net GHG sink includes a large land CO2 sink (−1229.3 ± 430.9 Tg CO2 yr−1 based on the top‐down approach and −1353.8 ± 158.5 Tg CO2 yr−1 based on the bottom‐up approach) being offset by biogenic CH4 and N2O emissions, predominantly coming from the agricultural sectors. Emerging data sources and modeling capacities have helped achieve agreement between the top‐down and bottom‐up approaches, but sizable uncertainties remain in several flux terms. For example, the reported CO2 flux from land use and land cover change varies from a net source of more than 300 Tg CO2 yr−1 to a net sink of ∼−700 Tg CO2 yr−1. Although terrestrial ecosystems over East Asia is close to GHG neutral currently, curbing agricultural GHG emissions and additional afforestation and forest managements have the potential to transform the terrestrial ecosystems into a net GHG sink, which would help in realizing East Asian countries' ambitions to achieve climate neutrality.

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“…The CH 4 fluxes from aquaculture was acquired from two latest comprehensive studies (Dong et al., 2023; Zhang, Tang, et al., 2022). Zhang, Tang, et al.…”

Section: Methodsmentioning

confidence: 99%

Section: Agriculturementioning

confidence: 99%

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The Greenhouse Gas Budget of Terrestrial Ecosystems in East Asia Since 2000

Wang,

Gao,

Jeong

et al. 2024

Global Biogeochemical Cycles

View full text Add to dashboard Cite

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“…Aquatic metabolism is the process of C fixation and mineralization within the ecosystems, which is linked to gross primary production (GPP) and ecosystem respiration (ER), respectively (Battin et al (2023); Figure 2). Nutrients (e.g., N, and P) are one of the most critical drivers of metabolism that regulates CO 2 and CH 4 production in aquatic ecosystems (Battin et al, 2023;Zhang, Tang, et al, 2022). Urban and agricultural wastewater rich in nutrients and OC can enhance GPP by alleviating N and P limitations on the growth of aquatic plants (e.g., algae), thereby reducing the dissolved CO 2 partial pressure (pCO 2 ) (Le et al, 2010;Qu & Kroeze, 2010;Yan, Lauerwald, et al, 2023).…”

Section: Aquatic Metabolismmentioning

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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“…Research on the dynamics of greenhouse gases (GHGs) such as CO 2 or CH 4 in aquaculture systems has been very popular in recent years, which is crucial for assessing carbon footprints and climate impacts [3]. Although aquaculture systems have been recognized as a source of carbon dioxide emissions by a significant portion of studies [4][5][6][7], opinions are divided. Some studies demonstrate that aquaculture systems emit relatively low levels of CO 2 and are a relatively low source of CO 2 [8].…”

Section: Introductionmentioning

confidence: 99%

Composition, Dynamic Changes, and Carbon Sequestration Effects of Organic Carbon in the Water of a Penaeus vannamei Culture Pond

Huang,

Jiang,

Shan

et al. 2024

Water

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To investigate the composition, dynamic changes, and carbon sequestration effects of organic carbon in the water of Penaeus vannamei aquaculture ponds, changes in organic carbon were assessed in the water of the P. vannamei pond monoculture and integrated P. vannamei–Mercenaria mercenaria pond aquaculture systems during an aquaculture period. RDOC (refractory dissolved organic carbon) was determined using the DOC (dissolved organic carbon) degradation method, and the organic carbon composition in the water and its relationship with environmental factors were analyzed. The results showed the following: (1) The aquaculture activities significantly increased the DOC, POC (particulate organic carbon), and RDOC contents in the water and decreased the proportions of RDOC in the water. The DOC, POC, RDOC contents, and RDOC proportions in the monoculture systems were higher than those of the integrated aquaculture systems. (2) DOC, POC, RDOC contents, and RDOC proportions in the water were significantly positively correlated with chlorophyll-a contents in both aquaculture systems and significantly negatively correlated with water temperature and salinity. (3) Based on the average content and proportion of RDOC in the water of the two aquaculture systems, it was calculated that approximately an average of 108.64 kg of RDOC was present per hectare of P. vannamei aquaculture water during the aquaculture period.

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Assessing carbon greenhouse gas emissions from aquaculture in China based on aquaculture system types, species, environmental conditions and management practices

Cited by 38 publications

References 77 publications

The Greenhouse Gas Budget of Terrestrial Ecosystems in East Asia Since 2000

The Greenhouse Gas Budget of Terrestrial Ecosystems in East Asia Since 2000

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

Composition, Dynamic Changes, and Carbon Sequestration Effects of Organic Carbon in the Water of a Penaeus vannamei Culture Pond

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