Journal ArticleDOI
Long-Term Trends in Acid Neutralizing Capacity under Increasing Acidic Deposition: A Special Example of Eutrophic Taihu Lake, China.
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The results suggest that interactions between human accelerated weathering, watershed geochemistry, and in-lake algae activities significantly impact the water chemistry of the lake and recommend an "integrated and balanced" recovery plan for the lake ecosystem.Abstract:
While North America and Europe have been recovering from acidification, China is experiencing impacts of acid deposition. The Taihu region is a seriously impacted area by acid rain in China, with the average rainfall pH < 5. However, the acid neutralizing capacity (ANC) and pH of Taihu Lake have significantly increased over the past 60 years (p < 0.05). Analyses showed that watershed neutralization by carbonates and in-lake alkalinization by algae activities were the two major reactions responsible for the increase. In the Taihu basin, the dominant carbonate bedrocks are the major source of base cations (particularly Ca2+ and Mg2+) and act as the acidification buffer. In addition, our field measurements across the lake showed that the pH values were significantly higher in algal bloom waters than in areas without blooms. This observation was further supported by our statistical analysis showing that the Taihu ANC and pH were significantly correlated with the chlorophyll increase (p < 0.05; 1985–2015). How...read more
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The bioavailability and contribution of the newly deposited heavy metals (copper and lead) from atmosphere to rice (Oryza sativa L.).
TL;DR: A major implication of these findings is that once the heavy metal is deposited, it may be reactivated in soils and transported to aerial parts or foliar uptake into plant tissues, emphasizing the important role of the newly deposited Cu and Pb in contributing to the edible parts of crops.
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Rapid evaluation of leaching potential of heavy metals from municipal solid waste incineration fly ash.
TL;DR: A set of rapid evaluation method was developed through the determination of characteristic index, heavy metal leaching analysis, principal component analysis, and mathematical model construction and it was found that f-CaO, acid neutralizing capacity, pH and soluble calcium were negatively correlated with heavyMetal leaching.
Journal ArticleDOI
δ15N and nutrient stoichiometry of water, aquatic organisms and environmental implications in Taihu lake, China.
TL;DR: It is suggested that although P control is necessary in terms of eutrophication control, N pollution control is urgent for the water quality and ecological recovery for Taihu lake.
Journal ArticleDOI
Decline in bulk deposition of air pollutants in China lags behind reductions in emissions
Yu Bo Zhao,Mengxiao Xi,Qiang Zhang,Zhao-yang 董朝阳 Dong,Mingrui Ma,Kaiyue Zhou,Wen Xu,Jia Xing,Bo Zheng,Zhang Wen,Xuejun Liu,Chris P. Nielsen,Yang Liu,Yuepeng Pan,Lei Zhang +14 more
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Detection of Organochlorine Pesticides in Contaminated Marine Environments via Cyclodextrin-Promoted Fluorescence Modulation.
TL;DR: This method relies on the ability of cyclodextrin to promote analyte-specific fluorescence modulation of a high quantum yield fluorophore when a pesticide is in close proximity, combined with subsequent array-based statistical analyses of the measurable changes in the emission signals.
References
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Journal ArticleDOI
Mechanisms Controlling World Water Chemistry
TL;DR: On the basis of analytical chemical data for numerous rain, river, lake, and ocean samples, the three major mechanisms controlling world surface water chemistry can be defined as atmospheric precipitation, rock dominance, and the evaporation-crystallization process.
Journal ArticleDOI
Significant Acidification in Major Chinese Croplands
J.H. Guo,Xuejun Liu,Y. Zhang,Jianlin Shen,Wenxuan Han,W.F. Zhang,Peter Christie,Keith Goulding,Peter M. Vitousek,Fusuo Zhang +9 more
TL;DR: A meta-analysis of a regional acidification phenomenon in Chinese arable soils that is largely associated with higher N fertilization and higher crop production is presented, likely to threaten the sustainability of agriculture and affect the biogeochemical cycles of nutrients and also toxic elements in soils.
Journal ArticleDOI
China's environment in a globalizing world
Jianguo Liu,Jared M. Diamond +1 more
TL;DR: In a Feature this week, Jianguo Liu and Jared Diamond look at the effects of China's sweeping environmental change and socio-economic challenges, synthesizing detailed literature that is scattered even for Chinese readers and largely inaccessible to western readers.
Journal ArticleDOI
Regional trends in aquatic recovery from acidification in North America and Europe
John L. Stoddard,Dean S. Jeffries,A. Lükewille,Thomas A. Clair,Peter J. Dillon,Charles T. Driscoll,Martin Forsius,M. Johannessen,Jeffrey S. Kahl,James H. Kellogg,A. Kemp,Jaakko Mannio,Don Monteith,Peter S. Murdoch,S. Patrick,A. Rebsdorf,Brit Lisa Skjelkvåle,M. P. Stainton,T. Traaen,H. van Dam,Katherine E. Webster,J. Wieting,A. Wilander +22 more
TL;DR: This article analyzed regional trends between 1980 and 1995 in indicators of acidification (sulphate, nitrate and base-cation concentrations, and measured (Gran) alkalinity) for 205 lakes and streams in eight regions of North America and Europe.
Journal ArticleDOI
Natural capital and ecosystem services informing decisions: From promise to practice
Anne D. Guerry,Anne D. Guerry,Stephen Polasky,Jane Lubchenco,Rebecca Chaplin-Kramer,Gretchen C. Daily,Gretchen C. Daily,Robert J. Griffin,Mary Ruckelshaus,Mary Ruckelshaus,Ian J. Bateman,Anantha Kumar Duraiappah,Thomas Elmqvist,Marcus W. Feldman,Carl Folke,Carl Folke,Jonathan M. Hoekstra,Peter Kareiva,Bonnie L. Keeler,Shuzhuo Li,Emily McKenzie,Zhiyun Ouyang,Belinda Reyers,Taylor H. Ricketts,Johan Rockström,Heather Tallis,Bhaskar Vira +26 more
TL;DR: Why ecosystem service information has yet to fundamentally change decision-making is explored and a path forward is suggested that emphasizes developing solid evidence linking decisions to impacts on natural capital and ecosystem services, and then to human well-being.