气候变化领域集成服务门户(CCPortal): Correcting a major error in assessing organic carbon pollution in natural waters

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DOI	10.1126/sciadv.abc7318
	Correcting a major error in assessing organic carbon pollution in natural waters
	Jiao, Nianzhi; Liu, Jihua; Edwards, Bethanie; Lv, Zongqing; Cai, Ruanhong; Liu, Yongqin; Xiao, Xilin; Wang, Jianning; Jiao, Fanglue; Wang, Rui; Huang, Xingyu; Guo, Bixi; Sun, Jia; Zhang, Rui; Zhang, Yao; Tang, Kai; Zheng, Qiang; Azam, Farooq; Batt, John; Cai, Wei-Jun; He, Chen; Herndl, Gerhard J.; Hill, Paul; Hutchins, David; LaRoche, Julie; Lewis, Marlon; MacIntyre, Hugh; Polimene, Luca; Robinson, Carol; Shi, Quan; Suttle, Curtis A.; Thomas, Helmuth; Wallace, Douglas; Legendre, Louis
通讯作者	Jiao, NZ (通讯作者)
发表日期	2021
ISSN	2375-2548
卷号	7 期号:16
英文摘要	Microbial degradation of dissolved organic carbon (DOC) in aquatic environments can cause oxygen depletion, water acidification, and CO2 emissions. These problems are caused by labile DOC (LDOC) and not refractory DOC (RDOC) that resists degradation and is thus a carbon sink. For nearly a century, chemical oxygen demand (COD) has been widely used for assessment of organic pollution in aquatic systems. Here, we show through a multicountry survey and experimental studies that COD is not an appropriate proxy of microbial degradability of organic matter because it oxidizes both LDOC and RDOC, and the latter contributes up to 90% of DOC in high-latitude forested areas. Hence, COD measurements do not provide appropriate scientific information on organic pollution in natural waters and can mislead environmental policies. We propose the replacement of the COD method with an optode-based biological oxygen demand method to accurately and efficiently assess organic pollution in natural aquatic environments.
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000640217000003
来源期刊	SCIENCE ADVANCES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260547
推荐引用方式 GB/T 7714	Jiao, Nianzhi,Liu, Jihua,Edwards, Bethanie,et al. Correcting a major error in assessing organic carbon pollution in natural waters[J]. 中国科学院青藏高原研究所,2021,7(16).
APA	Jiao, Nianzhi.,Liu, Jihua.,Edwards, Bethanie.,Lv, Zongqing.,Cai, Ruanhong.,...&Legendre, Louis.(2021).Correcting a major error in assessing organic carbon pollution in natural waters.SCIENCE ADVANCES,7(16).
MLA	Jiao, Nianzhi,et al."Correcting a major error in assessing organic carbon pollution in natural waters".SCIENCE ADVANCES 7.16(2021).