气候变化领域集成服务门户(CCPortal): Export of nutrients and suspended solids from major Arctic rivers and their response to permafrost degradation

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DOI	10.1016/j.accre.2021.06.002
	Export of nutrients and suspended solids from major Arctic rivers and their response to permafrost degradation
	Zhang Shu-Min; Mu Cui-Cui; Li Zhi-Long; Dong Wen-Wen; Wang Xing-Yu; Streletskaya, Irina; Grebenets, Valery; Sokratov, Sergey; Kizyakov, Alexander; Wu Xiao-Dong
通讯作者	Mu, CC (通讯作者)，Lanzhou Univ, Coll Earth & Environm Sci, Minist Educ, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	1674-9278
起始页码	466
结束页码	474
卷号	12 期号:4
英文摘要	The rapid warming of the Arctic has led to permafrost degradation, accelerating the transport of terrestrial materials by rivers. The quantitative assessment of riverine nutrients and total suspended solids (TSS) flux is important to clarify the land-ocean connections in the Arctic. However, much is unknown about the estimates of these components from direct measurements in the Arctic rivers and the response of the components to permafrost degradation. Here, we report the results from the Arctic Great Rivers Observatory (Arctic-GRO) for the six major Arctic rivers (Yenisey, Lena, Ob', Mackenzie, Yukon, and Kolyma) to investigate the riverine exports of TSS, total dissolved nitrogen (TDN), nitrate (NO3-), bicarbonate (HCO3-), total dissolved phosphorus (TDP), and phosphate (PO43-). The results showed that from 2004 to 2017, the annual TSS, TDN, and NO3- exports to the Arctic Ocean were approximately 106,026 Gg, 692 Gg, and 130 Gg, respectively, and the HCO3-, TDP, and PO43- exports were approximately 79,092 Gg, 32 Gg, and 18 Gg, respectively. There were remarkable variations in component concentrations and fluxes between seasons. More than 80% of the TDN, TDP, PO43-, and TSS exports mainly occurred in spring and summer, and a high HCO3- flux was recorded in summer, while a high NO3- flux in some rivers occurred in winter. The active layer thickness was significantly positively correlated with the annual TDN, NO3- and HCO3- exports. In addition, the HCO(3)(-)flux of the six Arctic rivers increased by 247 Gg per year during 2004-2017. The positive relationship between the active layer thickness and river discharge indicates that permafrost degradation accelerated riverine carbonate, nitrogen, and phosphorus exports. This study demonstrates that riverine exports play an important role both in the Arctic terrestrial and marine ecosystems, and permafrost degradation will likely increase the riverine material exports to the ocean.
关键词	GULF-OF-MEXICO ORGANIC-MATTER RUSSIAN RIVERS CARBON CLIMATE OCEAN SEDIMENT PATTERNS ECOSYSTEM NITROGEN
英文关键词	Arctic rivers; Carbonate; Nutrients; Total suspended solids; Permafrost
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000694050200004
来源期刊	ADVANCES IN CLIMATE CHANGE RESEARCH
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/255088
作者单位	[Zhang Shu-Min; Mu Cui-Cui; Dong Wen-Wen; Wang Xing-Yu] Lanzhou Univ, Coll Earth & Environm Sci, Minist Educ, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China; [Mu Cui-Cui] Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519000, Peoples R China; [Mu Cui-Cui; Wu Xiao-Dong] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resource, State Key Lab Cryospher Sci, Cryosphere Res Stn Qinghai Tibetan Plateau, Lanzhou 730000, Peoples R China; [Mu Cui-Cui] Univ Cooperat Polar Res, Beijing 100875, Peoples R China; [Streletskaya, Irina; Grebenets, Valery; Sokratov, Sergey; Kizyakov, Alexander] Lomonosov Moscow State Univ, Geog Fac, Moscow 119991, Russia
推荐引用方式 GB/T 7714	Zhang Shu-Min,Mu Cui-Cui,Li Zhi-Long,et al. Export of nutrients and suspended solids from major Arctic rivers and their response to permafrost degradation[J]. 中国科学院西北生态环境资源研究院,2021,12(4).
APA	Zhang Shu-Min.,Mu Cui-Cui.,Li Zhi-Long.,Dong Wen-Wen.,Wang Xing-Yu.,...&Wu Xiao-Dong.(2021).Export of nutrients and suspended solids from major Arctic rivers and their response to permafrost degradation.ADVANCES IN CLIMATE CHANGE RESEARCH,12(4).
MLA	Zhang Shu-Min,et al."Export of nutrients and suspended solids from major Arctic rivers and their response to permafrost degradation".ADVANCES IN CLIMATE CHANGE RESEARCH 12.4(2021).