三峡水库淤沙净碳排放量核算

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Abstract In order to quantify net carbon emissions from the Three Gorges Reservoir, China, this study clarified carbon biogeochemical cycles, and estimated carbon emissions during organic carbon (OC) transport along Yangtze River in the scenarios with and without Three Gorges Dam. Results demonstrated that Three Gorges Dam doesn’t increase but decreases carbon emissions by (23.24 ±1.05)%. Three Gorges Dam redistributes OC and transfers the hot spots of OC decomposition and carbon emissions from Yangtze River estuary to Three Gorges Reservoir. In the reservoir, the effective OC burial decreases net carbon emissions, although anoxic conditions enhance methane production.

Key words： Three Gorges Reservoir net carbon emissions sediment greenhouse gas

Received: 24 August 2022

PACS:	X14
	TV62

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	Articles by authors
	XING Ran
	QIN Bo-qiang
	BAO Yu-fei
	DAI Jiang-yu
	ZENG Chen-jun
	ZHU Lin
	SHI Wen-qing

Cite this article:

XING Ran,QIN Bo-qiang,BAO Yu-fei等. Estimation on net carbon emission from organic carbon transport caused by Three Gorges Dam[J]. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(4): 1930-1936.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2023/V43/I4/1930

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