Estimation of nutrient discharge from the Yangtze River to the East China Sea and the identification of nutrient sources

Tong, Yindong; Bu, Xiaoge; Chen, Junyue; Zhou, Feng; Chen, Long; Liu, Maodian; Tan, Xin; Yu, Tao; Zhang, Wei; Mi, Zhaorong; Ma, Li; Wang, Xuejun; Jing, Ni

doi:10.1016/j.jhazmat.2016.09.011

Cited by 103 publications

(50 citation statements)

References 22 publications

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“…A similar relationship on high TN and TP concentrations was attributed at river runoff in wet season for the Yangtze River (Tong et al, 2017). There is no information available on the amount and type of fertilizers used in Sinaloa State, but the N and P seasonal variations suggest heavy use of nitrogenous compounds beginning in May and continuing through October-November whereas, either because of later application, of slow solubility or of low availability of P fertilizers (Syers et al, 2008) TP increased significantly only in July, although it decreased with a rate similar to that of TN until the lasts sampling date.…”

Section: Total Nitrogen (Tn) and Total Phosphorous (Tp)supporting

confidence: 71%

Nitrogen and phosphorus in the subtropical Presidio River, northwestern Mexico

Sarmiento-Sánchez¹,

Voltolina²,

Velázquez-Dimas³

et al. 2017

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ABSTRACT. The aim of this study was to assess its nitrogen and phosphorus concentrations in the Presidio River, because it receives large volumes of wastewater with high loads of detergents and fertilizers. The mean concentrations of total nitrogen and phosphorus determined between . However, according to international standards on phosphorous concentrations in continental water bodies, the Presidio River may be considered hypereutrophic.

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Section: Total Nitrogen (Tn) and Total Phosphorous (Tp)supporting

confidence: 71%

Nitrogen and phosphorus in the subtropical Presidio River, northwestern Mexico

Sarmiento-Sánchez¹,

Voltolina²,

Velázquez-Dimas³

et al. 2017

lajar

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“…We also compared our modeled results with other modeling studies for the Yangtze River (Li et al, ; Liu et al, ; Tong et al, ; Yan et al, ). Yan et al () and Li et al () modeled DIN and DIP exports to coastal waters from the Yangtze River in 2003.…”

Section: Discussionmentioning

confidence: 97%

“…Yan et al () and Li et al () modeled DIN and DIP exports to coastal waters from the Yangtze River in 2003. Liu et al () estimated river export of TN and TP by Yangtze in 2010, while Tong et al () quantified the source attribution of riverine TN and TP export by Yangtze from 2006 to 2012. The comparison shows that our modeled DIN (1,544 kton) export by the Yangtze River is comparable with the study of Yan et al () (1,611 kton of DIN).…”

Section: Discussionmentioning

confidence: 99%

Global Change Can Make Coastal Eutrophication Control in China More Difficult

et al. 2020

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Fast socio-economic development in agriculture and urbanization resulted in increasing nutrient export by rivers, causing coastal eutrophication in China. In addition, climate change may affect hydrology, and as a result, nutrient flows from land to sea. This study aims at a better understanding of how future socio-economic and climatic changes may affect coastal eutrophication in China. We modeled river export of total dissolved nitrogen (TDN) and phosphorus (TDP) in 2050 for six scenarios combining socio-economic pathways (SSPs) and Representative Concentration Pathways (RCPs). We used the newly developed MARINA 2.0 (Model to Assess River Inputs of Nutrients to seAs) model. We found that global change can make coastal eutrophication control in China more difficult. In 2050 coastal waters may be considerably more polluted or considerably cleaner than today depending on the SSP-RCP scenarios. By 2050, river export of TDN and TDP is 52% and 56% higher than in 2012, respectively, in SSP3-RCP8.5 (assuming large challenges for sustainable socio-economic development, and severe climate change). In contrast, river export of nutrients could be 56% (TDN) and 85% (TDP) lower in 2050 than in 2012 in SSP1-RCP2.6 (assuming sustainable socio-economic development, and low climate change). Climate change alone may increase river export of nutrients considerably through hydrology: We calculate 24% higher river export of TDN and 16% higher TDP for the SSP2 scenario assuming severe climate change compared to the same scenario with low climate change (SSP2-RCP8.5 vs. SSP2-RCP2.6). Policies and relevant technologies combining improved nutrient management and climate mitigation may help to improve water quality in rivers and coastal waters of China.Plain Language Summary Fast socio-economic development has resulted in increasing nutrient export by rivers, causing coastal eutrophication in China. In addition, climate change may affect river discharge, and as a result, nutrient flows from land to sea. We explored how future socio-economic and climatic changes may affect coastal eutrophication in China. We found that in 2050 coastal waters may be considerably more polluted or considerably cleaner than today depending on the socio-economic development and climate change. By 2050, river export of total dissolved nitrogen (TDN) and phosphorus (TDP) is 52% and 56% higher than in 2012, respectively, in a scenario assuming large challenges for sustainable socio-economic development and severe climate change. In contrast, river export of nutrients could be 56% (TDN) and 85% (TDP) lower in 2050 than in 2012 in the scenario assuming sustainable socioeconomic development and low climate change. Climate change alone may increase river export of nutrients considerably: we calculate 24% higher river export of TDN and 16% higher TDP for a scenario assuming severe climate change compared to the same scenario with low climate change. Policies combining improved nutrient management and climate mitigation may help to improve water quality in rivers and c...

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“…In fact, the point source is still serious, and about 450 km 3 of domestic wastewater flows into rivers worldwide annually, with nearly half of it untreated (Angyal et al 2016). This suggests that both agricultural activities and urbanization are dominant driving forces of riverine N export (Firmansyah et al 2017, Tong et al 2017. In addition to agricultural and urban land uses, other land use types such as forestlands and wetlands also affect riverine N export (Su et al 2013, Wang et al 2014.…”

Section: Introductionmentioning

confidence: 99%