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Climate Change Amplifies Chronic Ammonia Risks in China's Freshwater Ecosystems

文献类型：期刊论文

作者Yuan, Ze1,4; Lyne, Vincent2; Tian, Jiaxin1,4; Liu, Honghao1,4; Gao, Lin1,4; Mao, Xiaoteng1,4; Ma, Ting1,3,4
刊名ENVIRONMENTAL SCIENCE & TECHNOLOGY
出版日期2026-01-09
卷号N/A
关键词ammonia toxicity climate change freshwaterecosystems chronic ecological risk China
ISSN号0013-936X
DOI10.1021/acs.est.5c08232
产权排序1
文献子类Article ; Early Access
英文摘要Ammonia toxicity poses a significant yet often overlooked risk to freshwater ecosystems. Conventional water quality standards rely on static concentration thresholds and fail to capture the dynamic nature of ammonia toxicity, which is strongly dependent on water temperature and pH. In this study, we combine high-frequency national water quality monitoring data with climate projections to evaluate both current and future chronic ammonia risks across China's freshwater systems. Our results reveal that existing criteria substantially underestimate ecological risks: approximately 71% of chronic exceedance events go undetected under most commonly used static thresholds. These risks exhibit marked spatial heterogeneity, with over 80% of northern river basins experiencing elevated chronic exposure, while southern basins face less than half the national average. Climate change is projected to intensify ammonia risks even in regions with historically strong pollution controls. Under the high-emission scenario, the national exceedance rate increases from around 8% to nearly 14% in summer, primarily driven by rising temperatures and increasingly extreme hydrological conditions. These findings demonstrate the critical limitations of fixed-threshold regulation and highlight the need for dynamic, climate-adaptive ammonia toxicity risk assessments. To effectively protect freshwater biodiversity and water quality in the face of climate change, regulatory frameworks must incorporate temperature- and pH-sensitive criteria alongside targeted, region-specific mitigation strategies.
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WOS关键词SURFACE WATERS ; TEMPERATURE ; SENSITIVITY ; TOXICITY ; NITROGEN ; OXYGEN
WOS研究方向Engineering ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:001659238700001
出版者AMER CHEMICAL SOC
源URL[http://ir.igsnrr.ac.cn/handle/311030/219722]  
专题资源与环境信息系统国家重点实验室_外文论文
通讯作者Ma, Ting
作者单位1.Chinese Acad Sci, State Key Lab Resources & Environm Informat Syst, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China;
2.Univ Tasmania, IMAS Hobart, Hobart, Tas 7004, Australia;
3.Jiangsu Ctr Collaborat Innovat Geog Informat Resou, Nanjing 210023, Peoples R China
4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China;
推荐引用方式
GB/T 7714		 Yuan, Ze,Lyne, Vincent,Tian, Jiaxin,et al. Climate Change Amplifies Chronic Ammonia Risks in China's Freshwater Ecosystems[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2026,N/A.
APA Yuan, Ze.,Lyne, Vincent.,Tian, Jiaxin.,Liu, Honghao.,Gao, Lin.,...&Ma, Ting.(2026).Climate Change Amplifies Chronic Ammonia Risks in China's Freshwater Ecosystems.ENVIRONMENTAL SCIENCE & TECHNOLOGY,N/A.
MLA Yuan, Ze,et al."Climate Change Amplifies Chronic Ammonia Risks in China's Freshwater Ecosystems".ENVIRONMENTAL SCIENCE & TECHNOLOGY N/A(2026).

入库方式： OAI收割

来源：地理科学与资源研究所

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